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Thermal and photostabilization studies on carbohydrates functionalized with azo chromophoric system 2‐[( E )‐(3‐hydroxynaphthalen‐2‐yl)diazenyl]benzoic acid
Author(s) -
Chandran Ambily,
Kuriakose Sunny,
Mathew Tessymol
Publication year - 2013
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.3107
Subject(s) - benzoic acid , thermal stability , photochemistry , photochromism , biphenyl , absorption (acoustics) , organic chemistry , materials science , visible spectrum , fluorescence , chemistry , optics , physics , optoelectronics , composite material
In the present work, 2‐[( E )‐(3‐hydroxynaphthalen‐2‐yl)diazenyl]benzoic acid, an azo chromophoric system was prepared and incorporated onto carbohydrates such as starch and cellulose by dicyclohexylcarbodiimide coupling. The products were characterized by UV‐visible, fluorescence, FT‐IR and NMR spectroscopic methods. The results of the studies show that incorporation of the chromophoric system onto the polymeric core enhanced the light absorption, emission and light stabilization properties of the chromophoric system. The light fastening properties of chromophoric system and the carbohydrate‐bound photochromic systems were compared. It shows that light stabilization of the chromophoric system greatly enhanced on attaching to the polymeric core materials. Thermal stability of the chromophoric system also enhanced on attaching to the biopolymeric core systems. Copyright © 2013 John Wiley & Sons, Ltd.