Synthesis, Characterisation and Photoresponsive Studies of Lignin Functionalised with 2-(5-(4-dimethylamino-benzylidin)-4-oxo-2-thioxo- thiazolidin-3-yl)-acetic Acid

Ambily Chandran, Sunny Kuriakose, Tessymol Mathew

Research and Post Graduate Department of Chemistry, St.George College, Mahathma Gandhi University, Kerala, India.
Research and Post Graduate Department of Chemistry, St.Thomas College, Mahathma Gandhi University, Kerala, India.

DOI: 10.4236/ojopm.2012.24009                

Abstract

A chromophoric system 2-(5-(4-dimethylamino-benzylidin)-4-oxo-2-thioxo-thiazoli din-3-yl)acetic acid with push-pull electron modulation was synthesised and incorporated onto lignin core (technical lignin, lignin sulphonic acid M.W. 52,400) and the photo responsive behaviour was investigated. The product was characterised by UV-visible, fluores-cence, FT-IR, and NMR spectroscopic methods. The results of the studies show that the incorporation of the chromo-phoric system on to the lignin core enhanced the light absorption and light stabilization properties of the chromophoric system. The remarkable stability on irradiation provides a novel photo responsive system with excellent light fastening properties which would find application in coating materials, dyes, paints etc.

Keywords

Lignin; Photoresponsive; Environment Friendly; Light Fastening; Coating Material

Conflicts of Interest

The authors declare no conflicts of interest.

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