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

doi:10.1016/s1386-1425(01)00541-8

FT-IR, FT-Raman and FT-SERS spectra of 4-aminosalicylic acid sodium salt dihydrate

Spectrochim Acta A Mol Biomol Spectrosc. 2002 Jan 15;58(2):281-7. doi: 10.1016/s1386-1425(01)00541-8.

Authors

C Yohannan Panicker¹, Hema Tresa Varghese, Annamma John, Daizy Philip, Krisztina Istvan, Gabor Keresztury

Affiliation

¹ Department of Physics, TKM Arts and Science College, Kollam, India.

PMID: 11808734
DOI: 10.1016/s1386-1425(01)00541-8

Abstract

FT-IR, FT-Raman and FT-SERS spectra of 4-aminosalicylic acid sodium salt dihydrate (4ASAS) have been recorded and analysed. The vibrational bands due to NH2, OH, carboxyl group, and the benzene ring are identified. The CX ipb(17a, 17b), CC ipb(6,18a) and CH ipb (3,14a, 14b) bands are more enhanced in SERS. Broadening of the inplane carboxyl bend indicates interaction with the silver surface. Further the vC=O, v(C-O)c and v(C-O)h are intense in the SERS spectrum. The rocking and wagging modes of NH2 also show up in SERS. The molecule (O, N donor ligand) is thought to adsorb through the carboxyl oxygen atom with the benzene ring in a 'perpendicular side on orientation' with respect to the silver surface.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Aminosalicylic Acid / chemistry*
Spectrophotometry, Infrared*
Spectrum Analysis, Raman*

Substances

Aminosalicylic Acid