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

• 作者: Ambily Chandran Sunny Kuriakose Tessymol Mathew
• 来源期刊: 有机高分子材料期刊(英文)
• 学科: 化学
• 关键词: LIGNIN PHOTORESPONSIVE Environment Friendly Light Fastening Coating Material
• 年，卷（期）: yjgfzclqkyw_2012,（4）
• 页码范围: 63-68
• 页数: 6页
• 分类号: O6

摘要

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.