Thermal and Photoresponsive Studies of Starch Modified with 2-5-4-Dimethylamino-benzylidine-4-oxo-2-thioxo-thiazolidin-3-ylacetic AcidReport as inadecuate




Thermal and Photoresponsive Studies of Starch Modified with 2-5-4-Dimethylamino-benzylidine-4-oxo-2-thioxo-thiazolidin-3-ylacetic Acid - Download this document for free, or read online. Document in PDF available to download.

International Journal of Carbohydrate ChemistryVolume 2012 2012, Article ID 356563, 8 pages

Research Article

Research and Post Graduate Department of Chemistry, St.Thomas College, Mahatma Gandhi University, Kerala, Pala 686574, India

Research and Post Graduate Department of Chemistry, St.George College, Mahatma Gandhi University, Kerala, Aruvithura 686122, India

Received 25 August 2012; Revised 9 October 2012; Accepted 10 October 2012

Academic Editor: Jianjun Li

Copyright © 2012 Ambily Chandran et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The present study describes the synthesis of a chromophoric system 2-5-4-dimethylamino-benzylidin-4-oxo-2-thioxo-thiazolidin-3-ylacetic acid and its incorporation into starch through esterification of the hydroxyl group by the free carboxyl function of the chromophoric system by DCC coupling. The products were characterized by UV-visible, fluorescence, FT-IR, and NMR spectroscopic methods. The newly developed system was subjected to photoresponsive studies such as light absorption, light stabilization and fluorescence emission. The free chromophoric system and the coupled product were also subjected to thermal analysis. The results show that modification enhances the light absorption and light fastening properties of the chromophoric system. Thermal stability of the polymeric system greatly enhances on attaching the chromophoric system. In view of these results the newly developed system is proposed as a nature friendly, green, and photoactive product which could find application in dyes, inks, paints, and so forth.





Author: Ambily Chandran, Sunny Kuriakose, and Tessymol Mathew

Source: https://www.hindawi.com/



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