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spectroscopy

• September 20, 2009
• 11:16

  Research Field of C.Yohannan Panicker

   » ‎ spectroscopy

  Surface enhanced Raman Scattering

  computational chemistry

  
  
• 11:13

  Publications of C.Yohannan Panicker

   » ‎ spectroscopy

  Publications of Dr.C.Yohannan Panicker, Department of Physics, TKM College of Arts and Science, Kollam-5

  2001

  [1]. FT-Raman, FT-IR and SERS spectra of sodium salicylate, Daizy Philip, Annamma John, C.Yohannan Panicker, Hema Tresa Varghese, Spectrochim. Acta 57A (2001) 1561-1566.

  2002

  [2] FT-IR, FT-Raman and FT-SERS spectra of 4-aminosalicylic acid sodium salt dihydrate, C.Yohannan Panicker, Hema Tresa Varghese,Annamma John, Daizy Philip, Krisztina Istvan, Gabor Keresztury, Spectrochim. Acta 58A (2002) 281-287.

  [3] Vibrational Spectra of melamine diborate, C.Yohannan Panicker, Hema Tresa Varghese, Annamma John, Daizy Philip, Helena IS.Nogueira, Spectrochim. Acta 58A (2002) 1545-1551.

  2004

  [4] Surface enhanced Raman scattering, C.Yohannan Panicker, Hema Tresa Varghese,Daizy Philip, Int. J. Chem. Sci. 2(4) (2004) 533-536

  2005

  [5] FT-IR and FT-Raman spectra of anisole, Shyma Mary Y, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Int. J. Chem. Sci.,3(4)(2005) 624-628.

  [6] Surface selection rules of Surface enhanced Raman scattering, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Int. J. Chem. Sci. 3(2) (2005) 268-270.

  [7] Surface enhanced Raman spectrum of 4-cyanopyridine, C.Yohannan Panicker, Hema Tresa Varghese,Daizy Philip, Int. J. Chem. Sci. 3(4) (2005) 637-641.

  2006

  [8] Surface enhanced Raman spectrum of 3-cyanopyridine, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Int. J. Chem. Sci.,4(1)(2006)76.

  [9] Ab initio calculations and vibrational structure of 2,6-dimethyl-pyridine- 3-sulfonic acid, Hema Tresa Varghese, C.Yohannan Panicker, PL.Anto, Daizy

  Philip, Int. J. Chem. Sci.4(3) (2006) 512.

  [10] Vibrational Spectroscopic studies and ab initio calculations of sulfanilamide.

  Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Spectrochim. Acta 65A(2006)155-158.

  [11] Potential dependent SERS profile of orthanilic acid on silver electrode.

  PL.Anto, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip,

  J. Raman Spectrosc. 37 (2006) 1265-1271.

  [12] FT-IR, FT-Raman and SERS spectra of vitamin C, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Spectrochim. Acta 65 A (2006)802-804

  [13] Ab initio Hartree-Fock calculations of aminobenzoic acid, Hema Tresa Varghese, C.Yohannan Panicker, PL.Anto, Daizy Philip, Int. J. Chem. Sci. 4(3) (2006)617.

  [14] FT-IR, FT-Raman and SERS spectra of pyridine-3-sulfonic acid, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Helena IS.Nogueira, Spectrochim. Acta 64 (2006) 744-747.

  [15] Potential dependent SERS profile of sulfanilamide on silver electrode.

  Hema Tresa Varghese, C.Yohannan Panicker,PL.Anto, Daizy Philip, J. Raman Spectrosc. 37 (2006) 487-491.

  [16] Potential dependent SERS profile of sulfanilic acid on silver electrode.

  C.Yohannan Panicker, Hema Tresa Varghese, PL.Anto, Daizy Philip,

  J. Raman Spectrosc. 37 (2006) 853-857.

  2007

  [17] FT-IR, FT-Raman and SERS spectrum of methyl salicylate, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, James R.Mannekutla, SR.Inamdar, Spectrochim. Acta 66 A(2007) 959-963.

  [18] IR, Raman and SERS spectrum of 5-sulphosalicylic acid dihydrate.

  Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, J. Raman Spectrosc. 38 (2007)309-315.

  [19] IR, Raman and SERS spectra of 3,5- dinitrosalicylic acid, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Joydeep Chowdhury, Manash Ghosh,J.Raman Spectrosc. 38 (2007) 323-331.

  [20] Raman, IR and SERS spectra of Methyl(2-methyl-4,6-dinitro phenyl sulfanyl) ethanoate., C.Yohannan Panicker, Hema Tresa Varghese, Daizy

  Philip, Helena I.S.Nogueira, Katerina Castkova, Spectrochim. Acta.67A (2007)1313-1320.

  [21] Vibrational Spectroscopic studies and ab initio calculations of 5-methyl-2-(p-fluoro phenyl)benzoxazole, PL.Anto, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Ozlem Temiz-Arpaci, Betul Tekiner-Gulbas, Ilkay Yildiz, Spectrochim. Acta 67A(2007) 744-749.

  [22] A Novel thermo-optic analysis to detect photochemical reaction of salbutamol,

  G.Krishnakumar, K.Krishnankutty, K.Raju, S.Mohanan, Hema Tresa Varghese, C.Yohannan Panicker, Mat. Sci. Res. India, 4(2) (2007) 481-486.

  [23] Ab initio Hartree-Fock Calculations of N-(2-chlorophenyl-)-(1-propanamide) ,

  C.Yohannan Panicker, M.Abdul Salim, Hema Tresa Varghese, Oriental J. of Chem., 23(3) ( 2007)983-988.

  [24] Vibrational Spectroscopic studies and ab initio calculations of pyridine- 3-sulfonic acid, Hema Tresa Varghese, C.Yohannan Panicker, PL.Anto, Daizy

  Philip, Asian J. Chem. 4(2007) 2627-2632.

  [25] Vibrational frequencies and structural determination of 2-chlorohexane

  K.Raju, G.Gopkumar, G.Krishnakumar, Hema Tresa Varghese, C.Yohannan Panicker, Int. J. Chem.. Sci. 5(5) (2007)1986-1994.

  [26] Vibrational Spectroscopic studies and ab initio calculations of Benzyl

  Selenocyanate , G.Gopkumar, K.Raju, G.Krishnakumar, Hema Tresa Varghese, C.Yohannan Panicker, Int. J. Chem.. Sci. 5(5)(2007)2019-2026.

  [27] Ab initio Hartree-Fock calculations of Sulfamic acid, M.Abdul Salim, Hema Tresa Varghese, C.Yohannan Panicker, Mat. Sci. Res. India, 4(2) (2007) 341-344.

  [28] IR, Raman and SERS spectra of disodium terephthalate, Hema Tresa

  Varghese, C.Yohannan Panicker, Daizy Philip, K.Sreevalsan, V.Anithakumary,

  Spectrochim. Acta 68A (2007) 817-822.

  [29] Vibrational spectroscopic studies and ab initio calculations of 2-cyano

  phenyl isocyanid dichloride, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Pavel Pazdera, Spectrochim.Acta 67 A (2007) 1055-1059.

  [30] Thermo acoustic analysis to study the effect of sunlight on disodium hydrogen citrate, G.Krishnakumar, K.Krishnanakutty, S.Mohanan, K.Raju, C.Yohannan Panicker, Mat. Sci. Res. India 4 (2007) 465-470.

  2008

  [31] Ab initio calculations and vibrational spectroscopic studies 2-chloro - 6-methoxy pyridine, L.Ushakumari, M.Fathima Beegum, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, Rasayan J. Chem. 2(2008)246-250.

  [32] Vibrational spectroscopic studies of 4-cyanobenzoic acid, M.Fathima Beegum,L.Ushakumari, B.Harikumar, Hema Tresa Varghse, C.Yohannan Panicker, Rasayan J. Chem. 2(2008)258-262.

  [33] Vibrational spectroscopic studies and DFT calculations of 4-Fluoro-N-(2-hydroxy-4-nitrophenyl)benzamide, L.Ushakumari, Hema Tresa Varghse, C.Yohannan Panicker, Tugba Ertan, Ilkay Yildiz, J. Raman Spectrosc. 39 (2008) 1832-1839.

  [34] Vibrational Spectroscopic Studies and ab initio calculations of 4-tert butyl Benzyl Selenocyanate, L.Usha Kumari, M.Fathima begum,B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, Rasayan . J. Chem. .1( 2008)110-116.

  [35] Vibrational wavenumbers and structural determination of dilithium terephthalate,

  M.Fathima begum, L.Usha Kumari, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, Rasayan. J. Chem. Sci.1( 2008)117-124.

  [36] Vibrational Spectroscopic studies and ab initio calculations of 5- methyl-2-(-p-methyl aminophenyl) benzoxazole, KR.Ambujakshan, VS.Madhavan, Hema Tresa Varghese, C.Yohannan Panicker, Ozlem Temiz-Arpaci, Betul Tekiner-Gulbas, Ilkay Yildiz, Spectrochim. Acta A (2008) 782-788.

  [37] Vibrational spectroscopic studies and ab initio calculations of 5-nitro-2-(p-fuorophenyl)benzoxazole, Y.Sheena Mary, Hema Tresa Varghese, C.Yohannan Panicker, Tugba Ertan, Ilkay Yildiz, Ozlem Temiz-Arpaci, Spectrochim. Acta, Part A 71( 2008) 566-571.

  [38] Vibrational Spectroscopic Studies and ab initio calculations of a substituted amide of Pyrazine-2-carboxylic acid - C12H10ClN3O, Y.Sheena Mary, Hema Tresa Varghese, C.Yohannan Panicker, Martin Dolezal, Spectrochim. Acta, Part A 71(2008)725-730.

  [39] Vibrational Spectroscopic Studies and ab initio calculations of Goniothalamin, a natural product, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, G.Jayakumar, Spectrochim. Acta, Part A 71(2008)731-738.

  [40] Vibrational Spectroscopic Studies and ab initio calculations of L-Glutamic Acid 5-amide, A.Sumayya, C.Yohannan Panicker, Hema Tresa Varghese, B.Harikumar, Rasayan J. Chem. 13(2008)548-555.

  [41] Vibrational Spectroscopic studies and DFT calculations of 4-hydroxyacetanilide K.Raju, G.Gopakumar, G.Krishnakumar, Hema Tresa Varghese, C.Yohannan Panicker, Mat. Sci. Res. India, 5(2008)75-82.

  [42] A novel theormo-acoustic analysis to detect photochemical reaction of Salbutamol, G.Krishnakumar, K.Krishnankutty, K.Raju, S.Mohanan, Hema Tresa Varghese, C.Yohannan Panicker, Int. J. Chem. Sci., 6(2008)1081-1092.

  2009

  [43] FT-IR, FT-Raman and SERS spectra of L-Proline, Y.Sheena Mary, L.Ushakumari, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, J. Iran. Chem. Soc. 6(2009)138-144.

  [44] Vibrational spectroscopic studies and theoretical calculations of 2-phenyl-4H-3, 1-benzoxazin-4-one, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, C.Yohannan Panicker, Oriental J. Chem. 24(2008)865-874.

  [45] FT-IR, FT-Raman and DFT calculations of 4-Chloro-2-(3,4-dichlorophenyl carbamoyl)phenyl acetate, V.S.Madhavan, Hema Tresa Varghese, Samuel Mathew, Jarmila Vinsova, C.Yohannan Panicker, Spectrochimica Acta A., 72(2009)547-553.

  [46] IR, Raman and SERS spectra of 2(Methoxycarbonylmethylsulfanyl)-

  3,5-dinitrobenzenecarboxylic acid, Asha Raj, K.Raju, Hema Tresa Varghese, Carlos M.Granadeiro, Helena I.S.Nogueira, J. Braz. Chem. Soc.20(2008)549-559.

  [47] Spectroscopic Investigations of a substituted amide of pyrazine-2-carboxylic acid- C16H18N3O., L.Ushakumari, C.Yohannan Panicker, Hema Tresa Varghese, Haseena, A.V.Vaidyan, Nisha Sudhakaran, K.Raju Oriental J. Chem. 24(2008)849-858.

  [48] Spectroscopic studies and Hartree-Fock ab initio calculations of a 2,3-diphenylpropenoic acid ester- C17H16O2, C.Yohannan Panicker, Hema Tresa Varghese, Al-Shibia S.Deen, B.Harikumar, K.Raju, Mat. Sci. Res. India, 2008.

  [49] IR, Raman and ab initio calculations of 2,6-dimethoxyphenol, C.Yohannan Panicker, Hema Tresa Varghese, Sajina K. A.V.Vaidyan, Meenu Anna John, B.Harikumar, Oriental J. Chem. 24 (2008)973-976.

  [50] Spectroscopic studies and Hartree-Fock ab initio calculations of a 2,3-diphenylpropenoic acid ester – C19H20O2, C.Yohannan Panicker, Hema Tresa Varghese, S.Sunitha, A.V.Vaidyan, Biji Alexander, K.Raju, Int. J. Chem. Sci. 7(2009)486-496..

  [51] Spectroscopic studies and Hartree-Fock ab initio calculations of a substituted amide of pyrazine-2-carboxylic acid –C12H10ClN3O, C.Yohannan Panicker, Hema Tresa Varghese, S.Sreelekshmi, A.V.Vaidyan, S.Adithya, K.Raju, Int. J. Chem. Sci. 7(2009)442-454.

  [52] FT-IR, FT-Raman and DFT calculations of 3-{[(4-fluorophenyl) methylene] amino}-2-phenylquinazolin-4(3H)-one, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, Chrisstian Van Alsenoy, C.Yohannan Panicker, Journal of Raman Spectroscopy, 2009.DOI:10.1002/jrs.2159.

  [53] FT-IR, FT-Raman spectra and ab initio calculations of 3-{[(2-hydroxyphenyl) methylene]amino}-2-phenylquinazolin-4(3H)-one, C.Yohannan Panicker, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, Christian Van Alsenoy, J. Raman Spectrosc. 2008.DOI:10.1002/jrs.2276.

  [54] FT-IR, FT-Raman and SERS spectra of Anilinium sulfate, P.L.Anto, Ruby John Anto, Hema Tresa Varghese, C.Yohannan Panicker, DaizyPhilip, A.G.Brolo, J. Raman Spectrosc. 2009.doi:10.1002/jrs.2323.

  [55] FT-IR, FT-Raman and DFT calculations of the salicylanilide derivative 4-Chloro-2-(4-bromophenylcarbamoyl)phenyl acetate, Hema Tresa Varghese, C.Yohannan Panicker, V.S.Madhavan, Samuel Mathew, Jarmila Vinsova, Christian Van Alsenoy, J. Raman Spectrosc. 2009.DOI: 10.1002/jrs.2265.

  [56] Spectroscopic properties of guanidinium zinc sulphate [C(NH2)3]2Zn(SO4)2 and ab initio calculatins of [C(NH2)3]2and HC(NH2)3 ,CJ.Antony, M.Junaid Bushiri, HT.varghese, CY Panicker, spectrochim. Acta 2009, doi:10.106/j.saa.2009.04.024.

  [57] Vibrational spectroscopic studies and computational study of methyl(2-methyl-4,6-dinitrophenylsulfanyl)ethanoate, C.Yohannan Panicker, Asha Raj, Hema Tresa Varghese, K.Raju, Y.Sheena Mary, Journal of Raman Spectroscopy, DOI: 10.1002/jrs/2509

  [58] IR, Raman and SERS spectra of ethyl salicylate, C.Yohannan Panicker, Hema Tresa Varghese, L.Ushakumari, J. Raman Spectrosc. DOI:10.1002/jrs2363.

  [59] FT-IR, FT-Raman, and Computational calculations of 4-chloro-2-(3-chlorophenyl carbamoyl)phenyl acetate, C.Yohannan Panicker, Hema Tresa Varghese, V.S.Madhavan, Samuel Mathew, Jarmila Vinsova, Christian Van Alsenoy, Y.Sheena Mary, Y.Shyma Mary, Journal of Raman Spectroscopy, DOI: 10.002/jrs2393.

  [60] FT-IR, FT-Raman, SERS and Computational calculations of 4-Ethyl-N-(2’-hydroxy-5’-nitrophenyl)benzamide, C.Yohannan Panicker, Hema Tresa Varghese, L.Ushakumari, Tugba Ertan, Ilkay Yildiz, Carlos M.Granadeiro, Helena I.S.Nogueira, Y.Sheena Mary, Y.Shyma Mary, J. Raman Spectrosc. DOI:10.1002/jrs2471

  [61] Spectroscopic investigations and Computational study of 2-[Acetyl(4-bromophenyl)carbamoyl]-4-chlorophenyl acetate

  C.Yohannan Panicker, Hema Tresa Varghese, K.C. Mariamma, Koshy John, Jarmila Vinsova, Christian Van Alsenoy, Y.Sheena Mary, Journal of Raman spectroscopy, DOI:10.102/jrs2492.

  [62] Vibrational spectroscopic studies and ab initio calculations of phenyl phosphate disodium salt, P.L.Anto, Ruby John Anto, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip. Journal of Raman spectroscopy, DOI:10.1002/jrs 2406

  Papers accepted

  [1] Surface enhanced Raman Scattering. C.Yohannan Panicker, Hema Tresa Varghese, Asian J.Phys. 2009.

  [2] Vibrational spectroscopic studies of 4-flurobenzyl selenocyanate.V.S.Madhavan, K.R.Ambujakshan, Hema Tresa Varghese, C.Yohannan Panicker, Asian

  J.Phys. ,2009.

  [3] Vibrational spectroscopic studies of 4-methoxybenzyl selenocyanate, V.S.Madhavan, K.R.Ambujakshan, Hema Tresa Varghese, C.Yohannan Panicker Asian J.Phys., 2009.

  [4] Spectroscopic studies and Hartree-Fock ab initio calculations of a substituted amide of pyrazine-2-carboxylic acid – C16H18ClN3O, C.Yohannan Panicker, Hema Tresa Varghese, T.Thansani, Turkish J. Chem. 2008.

  [5] IR, Raman and SERS spectra of 2-phenoxymethylbenzothiazole, Asha Raj, K.Raju, Hema Tresa Varghese, Tugba Ertan, Ilkay Yildiz, Ozlem Temiz Arpaci, Carlos M.Granadeiro, Helena I.S.Nogueira, C.Yohannan Panicker, Spectrochim. Acta part A. 2009.

  Communicated

  [1] FT-IR, FT-Raman and ab initio calculations of 3-Amino-2-phenyl quinazolin-4(3H)-one, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, Christian Van Alsenoy, C.Yohannan Panicker, Journal of Molecular Structure.

  [2] IR, Raman and SERS spectra of sulfanilic acid sodium salt, C.Yohannan Panicker, Hema Tresa Varghese, L.Ushakumari, Y.Sheena Mary, Jyotirmoy Sarkar, Joydeep Chowdhury, Journal of Raman Spectroscopy.

  [3] Computational study of 2-Bromo-4-chloroacetophenone, C.Yohannan Panicker, Hema Tresa Varghese, Manikantan Nair, K.Raju, G. Madhava Warrier, Oriental Journal of Chemistry.

  [4] Vibrational spectroscopic studies and ab initio calculations of 3-Nitroacetanilide

  C.Yohannan Panicker, Hema Tresa Varghese, Manikantan Nair, K.Raju, M. Laila, G. Madhava Warrier, Oriental Journal of Chemistry.

  [5] Spectroscopic investigations of p-nitroanilinium perchlorate – a computational study

  C.Yohannan Panicker, Hema Tresa Varaghese, K. Madhusoodhanan Pillai, Manikantan Nair, K.Raju, M. Laila, Oriental Journal of Chemistry.

  [6] A computational study of 2-Nitro-N-(4-nitrophenyl)benzamide

  C.Yohannan Panicker, Hema Tresa Varghese, B.Harikumar, Manikantan Nair, K.Raju, K. Madhusoodanan Pillai, Oriental Journal of Chemistry.

  [7] Vibrational spectroscopic studies and ab initio calculations of p-chlorobenzenesulfonic acid

  Hema Tresa Varghese, C.Yohannan Panicker, G. Madhava Warrier, Manikantan

  Nair, K.Raju, International Journal of Chemical Sciences.

  [8] Molecular Structure and vibrational frequencies of methoxy carbonyl sulfenyl halides (X=F, Cl, Br)

  Hema Tresa Varghese, C.Yohannan Panicker, G. Madhava Warrier, Manikantan

  Nair, K.Raju, International Journal of Chemical Sciences.

  [9] Spectroscopic Investigations of Anilinium Nitrate, C.Yohannan Panicker, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  [10] Spectroscopic Investigations and computational study of aniline acetate, C.Yohannan Panicker, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  [11] Vibrational spectroscopic studies and ab initio calculations of 3-methyl sulfanilic acid, C.Yohannan Panicker, Fausiya Hassan, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  [12] Spectroscopic Investigations of 2-hydroxy-4-methyl pyrimidine hydrochloride, C.Yohannan Panicker, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  
  
• 11:13

  Publications of C.Yohannan Panicker

   » ‎ spectroscopy

  Publications of Dr.C.Yohannan Panicker, Department of Physics, TKM College of Arts and Science, Kollam-5

  2001

  [1]. FT-Raman, FT-IR and SERS spectra of sodium salicylate, Daizy Philip, Annamma John, C.Yohannan Panicker, Hema Tresa Varghese, Spectrochim. Acta 57A (2001) 1561-1566.

  2002

  [2] FT-IR, FT-Raman and FT-SERS spectra of 4-aminosalicylic acid sodium salt dihydrate, C.Yohannan Panicker, Hema Tresa Varghese,Annamma John, Daizy Philip, Krisztina Istvan, Gabor Keresztury, Spectrochim. Acta 58A (2002) 281-287.

  [3] Vibrational Spectra of melamine diborate, C.Yohannan Panicker, Hema Tresa Varghese, Annamma John, Daizy Philip, Helena IS.Nogueira, Spectrochim. Acta 58A (2002) 1545-1551.

  2004

  [4] Surface enhanced Raman scattering, C.Yohannan Panicker, Hema Tresa Varghese,Daizy Philip, Int. J. Chem. Sci. 2(4) (2004) 533-536

  2005

  [5] FT-IR and FT-Raman spectra of anisole, Shyma Mary Y, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Int. J. Chem. Sci.,3(4)(2005) 624-628.

  [6] Surface selection rules of Surface enhanced Raman scattering, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Int. J. Chem. Sci. 3(2) (2005) 268-270.

  [7] Surface enhanced Raman spectrum of 4-cyanopyridine, C.Yohannan Panicker, Hema Tresa Varghese,Daizy Philip, Int. J. Chem. Sci. 3(4) (2005) 637-641.

  2006

  [8] Surface enhanced Raman spectrum of 3-cyanopyridine, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Int. J. Chem. Sci.,4(1)(2006)76.

  [9] Ab initio calculations and vibrational structure of 2,6-dimethyl-pyridine- 3-sulfonic acid, Hema Tresa Varghese, C.Yohannan Panicker, PL.Anto, Daizy

  Philip, Int. J. Chem. Sci.4(3) (2006) 512.

  [10] Vibrational Spectroscopic studies and ab initio calculations of sulfanilamide.

  Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Spectrochim. Acta 65A(2006)155-158.

  [11] Potential dependent SERS profile of orthanilic acid on silver electrode.

  PL.Anto, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip,

  J. Raman Spectrosc. 37 (2006) 1265-1271.

  [12] FT-IR, FT-Raman and SERS spectra of vitamin C, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Spectrochim. Acta 65 A (2006)802-804

  [13] Ab initio Hartree-Fock calculations of aminobenzoic acid, Hema Tresa Varghese, C.Yohannan Panicker, PL.Anto, Daizy Philip, Int. J. Chem. Sci. 4(3) (2006)617.

  [14] FT-IR, FT-Raman and SERS spectra of pyridine-3-sulfonic acid, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Helena IS.Nogueira, Spectrochim. Acta 64 (2006) 744-747.

  [15] Potential dependent SERS profile of sulfanilamide on silver electrode.

  Hema Tresa Varghese, C.Yohannan Panicker,PL.Anto, Daizy Philip, J. Raman Spectrosc. 37 (2006) 487-491.

  [16] Potential dependent SERS profile of sulfanilic acid on silver electrode.

  C.Yohannan Panicker, Hema Tresa Varghese, PL.Anto, Daizy Philip,

  J. Raman Spectrosc. 37 (2006) 853-857.

  2007

  [17] FT-IR, FT-Raman and SERS spectrum of methyl salicylate, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, James R.Mannekutla, SR.Inamdar, Spectrochim. Acta 66 A(2007) 959-963.

  [18] IR, Raman and SERS spectrum of 5-sulphosalicylic acid dihydrate.

  Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, J. Raman Spectrosc. 38 (2007)309-315.

  [19] IR, Raman and SERS spectra of 3,5- dinitrosalicylic acid, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Joydeep Chowdhury, Manash Ghosh,J.Raman Spectrosc. 38 (2007) 323-331.

  [20] Raman, IR and SERS spectra of Methyl(2-methyl-4,6-dinitro phenyl sulfanyl) ethanoate., C.Yohannan Panicker, Hema Tresa Varghese, Daizy

  Philip, Helena I.S.Nogueira, Katerina Castkova, Spectrochim. Acta.67A (2007)1313-1320.

  [21] Vibrational Spectroscopic studies and ab initio calculations of 5-methyl-2-(p-fluoro phenyl)benzoxazole, PL.Anto, C.Yohannan Panicker, Hema Tresa Varghese, Daizy Philip, Ozlem Temiz-Arpaci, Betul Tekiner-Gulbas, Ilkay Yildiz, Spectrochim. Acta 67A(2007) 744-749.

  [22] A Novel thermo-optic analysis to detect photochemical reaction of salbutamol,

  G.Krishnakumar, K.Krishnankutty, K.Raju, S.Mohanan, Hema Tresa Varghese, C.Yohannan Panicker, Mat. Sci. Res. India, 4(2) (2007) 481-486.

  [23] Ab initio Hartree-Fock Calculations of N-(2-chlorophenyl-)-(1-propanamide) ,

  C.Yohannan Panicker, M.Abdul Salim, Hema Tresa Varghese, Oriental J. of Chem., 23(3) ( 2007)983-988.

  [24] Vibrational Spectroscopic studies and ab initio calculations of pyridine- 3-sulfonic acid, Hema Tresa Varghese, C.Yohannan Panicker, PL.Anto, Daizy

  Philip, Asian J. Chem. 4(2007) 2627-2632.

  [25] Vibrational frequencies and structural determination of 2-chlorohexane

  K.Raju, G.Gopkumar, G.Krishnakumar, Hema Tresa Varghese, C.Yohannan Panicker, Int. J. Chem.. Sci. 5(5) (2007)1986-1994.

  [26] Vibrational Spectroscopic studies and ab initio calculations of Benzyl

  Selenocyanate , G.Gopkumar, K.Raju, G.Krishnakumar, Hema Tresa Varghese, C.Yohannan Panicker, Int. J. Chem.. Sci. 5(5)(2007)2019-2026.

  [27] Ab initio Hartree-Fock calculations of Sulfamic acid, M.Abdul Salim, Hema Tresa Varghese, C.Yohannan Panicker, Mat. Sci. Res. India, 4(2) (2007) 341-344.

  [28] IR, Raman and SERS spectra of disodium terephthalate, Hema Tresa

  Varghese, C.Yohannan Panicker, Daizy Philip, K.Sreevalsan, V.Anithakumary,

  Spectrochim. Acta 68A (2007) 817-822.

  [29] Vibrational spectroscopic studies and ab initio calculations of 2-cyano

  phenyl isocyanid dichloride, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip, Pavel Pazdera, Spectrochim.Acta 67 A (2007) 1055-1059.

  [30] Thermo acoustic analysis to study the effect of sunlight on disodium hydrogen citrate, G.Krishnakumar, K.Krishnanakutty, S.Mohanan, K.Raju, C.Yohannan Panicker, Mat. Sci. Res. India 4 (2007) 465-470.

  2008

  [31] Ab initio calculations and vibrational spectroscopic studies 2-chloro - 6-methoxy pyridine, L.Ushakumari, M.Fathima Beegum, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, Rasayan J. Chem. 2(2008)246-250.

  [32] Vibrational spectroscopic studies of 4-cyanobenzoic acid, M.Fathima Beegum,L.Ushakumari, B.Harikumar, Hema Tresa Varghse, C.Yohannan Panicker, Rasayan J. Chem. 2(2008)258-262.

  [33] Vibrational spectroscopic studies and DFT calculations of 4-Fluoro-N-(2-hydroxy-4-nitrophenyl)benzamide, L.Ushakumari, Hema Tresa Varghse, C.Yohannan Panicker, Tugba Ertan, Ilkay Yildiz, J. Raman Spectrosc. 39 (2008) 1832-1839.

  [34] Vibrational Spectroscopic Studies and ab initio calculations of 4-tert butyl Benzyl Selenocyanate, L.Usha Kumari, M.Fathima begum,B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, Rasayan . J. Chem. .1( 2008)110-116.

  [35] Vibrational wavenumbers and structural determination of dilithium terephthalate,

  M.Fathima begum, L.Usha Kumari, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, Rasayan. J. Chem. Sci.1( 2008)117-124.

  [36] Vibrational Spectroscopic studies and ab initio calculations of 5- methyl-2-(-p-methyl aminophenyl) benzoxazole, KR.Ambujakshan, VS.Madhavan, Hema Tresa Varghese, C.Yohannan Panicker, Ozlem Temiz-Arpaci, Betul Tekiner-Gulbas, Ilkay Yildiz, Spectrochim. Acta A (2008) 782-788.

  [37] Vibrational spectroscopic studies and ab initio calculations of 5-nitro-2-(p-fuorophenyl)benzoxazole, Y.Sheena Mary, Hema Tresa Varghese, C.Yohannan Panicker, Tugba Ertan, Ilkay Yildiz, Ozlem Temiz-Arpaci, Spectrochim. Acta, Part A 71( 2008) 566-571.

  [38] Vibrational Spectroscopic Studies and ab initio calculations of a substituted amide of Pyrazine-2-carboxylic acid - C12H10ClN3O, Y.Sheena Mary, Hema Tresa Varghese, C.Yohannan Panicker, Martin Dolezal, Spectrochim. Acta, Part A 71(2008)725-730.

  [39] Vibrational Spectroscopic Studies and ab initio calculations of Goniothalamin, a natural product, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, G.Jayakumar, Spectrochim. Acta, Part A 71(2008)731-738.

  [40] Vibrational Spectroscopic Studies and ab initio calculations of L-Glutamic Acid 5-amide, A.Sumayya, C.Yohannan Panicker, Hema Tresa Varghese, B.Harikumar, Rasayan J. Chem. 13(2008)548-555.

  [41] Vibrational Spectroscopic studies and DFT calculations of 4-hydroxyacetanilide K.Raju, G.Gopakumar, G.Krishnakumar, Hema Tresa Varghese, C.Yohannan Panicker, Mat. Sci. Res. India, 5(2008)75-82.

  [42] A novel theormo-acoustic analysis to detect photochemical reaction of Salbutamol, G.Krishnakumar, K.Krishnankutty, K.Raju, S.Mohanan, Hema Tresa Varghese, C.Yohannan Panicker, Int. J. Chem. Sci., 6(2008)1081-1092.

  2009

  [43] FT-IR, FT-Raman and SERS spectra of L-Proline, Y.Sheena Mary, L.Ushakumari, B.Harikumar, Hema Tresa Varghese, C.Yohannan Panicker, J. Iran. Chem. Soc. 6(2009)138-144.

  [44] Vibrational spectroscopic studies and theoretical calculations of 2-phenyl-4H-3, 1-benzoxazin-4-one, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, C.Yohannan Panicker, Oriental J. Chem. 24(2008)865-874.

  [45] FT-IR, FT-Raman and DFT calculations of 4-Chloro-2-(3,4-dichlorophenyl carbamoyl)phenyl acetate, V.S.Madhavan, Hema Tresa Varghese, Samuel Mathew, Jarmila Vinsova, C.Yohannan Panicker, Spectrochimica Acta A., 72(2009)547-553.

  [46] IR, Raman and SERS spectra of 2(Methoxycarbonylmethylsulfanyl)-

  3,5-dinitrobenzenecarboxylic acid, Asha Raj, K.Raju, Hema Tresa Varghese, Carlos M.Granadeiro, Helena I.S.Nogueira, J. Braz. Chem. Soc.20(2008)549-559.

  [47] Spectroscopic Investigations of a substituted amide of pyrazine-2-carboxylic acid- C16H18N3O., L.Ushakumari, C.Yohannan Panicker, Hema Tresa Varghese, Haseena, A.V.Vaidyan, Nisha Sudhakaran, K.Raju Oriental J. Chem. 24(2008)849-858.

  [48] Spectroscopic studies and Hartree-Fock ab initio calculations of a 2,3-diphenylpropenoic acid ester- C17H16O2, C.Yohannan Panicker, Hema Tresa Varghese, Al-Shibia S.Deen, B.Harikumar, K.Raju, Mat. Sci. Res. India, 2008.

  [49] IR, Raman and ab initio calculations of 2,6-dimethoxyphenol, C.Yohannan Panicker, Hema Tresa Varghese, Sajina K. A.V.Vaidyan, Meenu Anna John, B.Harikumar, Oriental J. Chem. 24 (2008)973-976.

  [50] Spectroscopic studies and Hartree-Fock ab initio calculations of a 2,3-diphenylpropenoic acid ester – C19H20O2, C.Yohannan Panicker, Hema Tresa Varghese, S.Sunitha, A.V.Vaidyan, Biji Alexander, K.Raju, Int. J. Chem. Sci. 7(2009)486-496..

  [51] Spectroscopic studies and Hartree-Fock ab initio calculations of a substituted amide of pyrazine-2-carboxylic acid –C12H10ClN3O, C.Yohannan Panicker, Hema Tresa Varghese, S.Sreelekshmi, A.V.Vaidyan, S.Adithya, K.Raju, Int. J. Chem. Sci. 7(2009)442-454.

  [52] FT-IR, FT-Raman and DFT calculations of 3-{[(4-fluorophenyl) methylene] amino}-2-phenylquinazolin-4(3H)-one, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, Chrisstian Van Alsenoy, C.Yohannan Panicker, Journal of Raman Spectroscopy, 2009.DOI:10.1002/jrs.2159.

  [53] FT-IR, FT-Raman spectra and ab initio calculations of 3-{[(2-hydroxyphenyl) methylene]amino}-2-phenylquinazolin-4(3H)-one, C.Yohannan Panicker, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, Christian Van Alsenoy, J. Raman Spectrosc. 2008.DOI:10.1002/jrs.2276.

  [54] FT-IR, FT-Raman and SERS spectra of Anilinium sulfate, P.L.Anto, Ruby John Anto, Hema Tresa Varghese, C.Yohannan Panicker, DaizyPhilip, A.G.Brolo, J. Raman Spectrosc. 2009.doi:10.1002/jrs.2323.

  [55] FT-IR, FT-Raman and DFT calculations of the salicylanilide derivative 4-Chloro-2-(4-bromophenylcarbamoyl)phenyl acetate, Hema Tresa Varghese, C.Yohannan Panicker, V.S.Madhavan, Samuel Mathew, Jarmila Vinsova, Christian Van Alsenoy, J. Raman Spectrosc. 2009.DOI: 10.1002/jrs.2265.

  [56] Spectroscopic properties of guanidinium zinc sulphate [C(NH2)3]2Zn(SO4)2 and ab initio calculatins of [C(NH2)3]2and HC(NH2)3 ,CJ.Antony, M.Junaid Bushiri, HT.varghese, CY Panicker, spectrochim. Acta 2009, doi:10.106/j.saa.2009.04.024.

  [57] Vibrational spectroscopic studies and computational study of methyl(2-methyl-4,6-dinitrophenylsulfanyl)ethanoate, C.Yohannan Panicker, Asha Raj, Hema Tresa Varghese, K.Raju, Y.Sheena Mary, Journal of Raman Spectroscopy, DOI: 10.1002/jrs/2509

  [58] IR, Raman and SERS spectra of ethyl salicylate, C.Yohannan Panicker, Hema Tresa Varghese, L.Ushakumari, J. Raman Spectrosc. DOI:10.1002/jrs2363.

  [59] FT-IR, FT-Raman, and Computational calculations of 4-chloro-2-(3-chlorophenyl carbamoyl)phenyl acetate, C.Yohannan Panicker, Hema Tresa Varghese, V.S.Madhavan, Samuel Mathew, Jarmila Vinsova, Christian Van Alsenoy, Y.Sheena Mary, Y.Shyma Mary, Journal of Raman Spectroscopy, DOI: 10.002/jrs2393.

  [60] FT-IR, FT-Raman, SERS and Computational calculations of 4-Ethyl-N-(2’-hydroxy-5’-nitrophenyl)benzamide, C.Yohannan Panicker, Hema Tresa Varghese, L.Ushakumari, Tugba Ertan, Ilkay Yildiz, Carlos M.Granadeiro, Helena I.S.Nogueira, Y.Sheena Mary, Y.Shyma Mary, J. Raman Spectrosc. DOI:10.1002/jrs2471

  [61] Spectroscopic investigations and Computational study of 2-[Acetyl(4-bromophenyl)carbamoyl]-4-chlorophenyl acetate

  C.Yohannan Panicker, Hema Tresa Varghese, K.C. Mariamma, Koshy John, Jarmila Vinsova, Christian Van Alsenoy, Y.Sheena Mary, Journal of Raman spectroscopy, DOI:10.102/jrs2492.

  [62] Vibrational spectroscopic studies and ab initio calculations of phenyl phosphate disodium salt, P.L.Anto, Ruby John Anto, Hema Tresa Varghese, C.Yohannan Panicker, Daizy Philip. Journal of Raman spectroscopy, DOI:10.1002/jrs 2406

  Papers accepted

  [1] Surface enhanced Raman Scattering. C.Yohannan Panicker, Hema Tresa Varghese, Asian J.Phys. 2009.

  [2] Vibrational spectroscopic studies of 4-flurobenzyl selenocyanate.V.S.Madhavan, K.R.Ambujakshan, Hema Tresa Varghese, C.Yohannan Panicker, Asian

  J.Phys. ,2009.

  [3] Vibrational spectroscopic studies of 4-methoxybenzyl selenocyanate, V.S.Madhavan, K.R.Ambujakshan, Hema Tresa Varghese, C.Yohannan Panicker Asian J.Phys., 2009.

  [4] Spectroscopic studies and Hartree-Fock ab initio calculations of a substituted amide of pyrazine-2-carboxylic acid – C16H18ClN3O, C.Yohannan Panicker, Hema Tresa Varghese, T.Thansani, Turkish J. Chem. 2008.

  [5] IR, Raman and SERS spectra of 2-phenoxymethylbenzothiazole, Asha Raj, K.Raju, Hema Tresa Varghese, Tugba Ertan, Ilkay Yildiz, Ozlem Temiz Arpaci, Carlos M.Granadeiro, Helena I.S.Nogueira, C.Yohannan Panicker, Spectrochim. Acta part A. 2009.

  Communicated

  [1] FT-IR, FT-Raman and ab initio calculations of 3-Amino-2-phenyl quinazolin-4(3H)-one, K.R.Ambujakshan, Hema Tresa Varghese, Samuel Mathew, Subarna Ganguli, Ashis Kumar Nanda, Christian Van Alsenoy, C.Yohannan Panicker, Journal of Molecular Structure.

  [2] IR, Raman and SERS spectra of sulfanilic acid sodium salt, C.Yohannan Panicker, Hema Tresa Varghese, L.Ushakumari, Y.Sheena Mary, Jyotirmoy Sarkar, Joydeep Chowdhury, Journal of Raman Spectroscopy.

  [3] Computational study of 2-Bromo-4-chloroacetophenone, C.Yohannan Panicker, Hema Tresa Varghese, Manikantan Nair, K.Raju, G. Madhava Warrier, Oriental Journal of Chemistry.

  [4] Vibrational spectroscopic studies and ab initio calculations of 3-Nitroacetanilide

  C.Yohannan Panicker, Hema Tresa Varghese, Manikantan Nair, K.Raju, M. Laila, G. Madhava Warrier, Oriental Journal of Chemistry.

  [5] Spectroscopic investigations of p-nitroanilinium perchlorate – a computational study

  C.Yohannan Panicker, Hema Tresa Varaghese, K. Madhusoodhanan Pillai, Manikantan Nair, K.Raju, M. Laila, Oriental Journal of Chemistry.

  [6] A computational study of 2-Nitro-N-(4-nitrophenyl)benzamide

  C.Yohannan Panicker, Hema Tresa Varghese, B.Harikumar, Manikantan Nair, K.Raju, K. Madhusoodanan Pillai, Oriental Journal of Chemistry.

  [7] Vibrational spectroscopic studies and ab initio calculations of p-chlorobenzenesulfonic acid

  Hema Tresa Varghese, C.Yohannan Panicker, G. Madhava Warrier, Manikantan

  Nair, K.Raju, International Journal of Chemical Sciences.

  [8] Molecular Structure and vibrational frequencies of methoxy carbonyl sulfenyl halides (X=F, Cl, Br)

  Hema Tresa Varghese, C.Yohannan Panicker, G. Madhava Warrier, Manikantan

  Nair, K.Raju, International Journal of Chemical Sciences.

  [9] Spectroscopic Investigations of Anilinium Nitrate, C.Yohannan Panicker, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  [10] Spectroscopic Investigations and computational study of aniline acetate, C.Yohannan Panicker, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  [11] Vibrational spectroscopic studies and ab initio calculations of 3-methyl sulfanilic acid, C.Yohannan Panicker, Fausiya Hassan, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  [12] Spectroscopic Investigations of 2-hydroxy-4-methyl pyrimidine hydrochloride, C.Yohannan Panicker, Hema Tresa Varghese, P.E.Eapen, K.Raju, Subarna Ganguli, Fathima Beegum, Sheena Mary.Y, International Journal of Chemical Sciences

  
  
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