无溶剂碳氧甲基化诱导的基托的静电交联
Shelly Km1, Kartik Ravishankar2, Nitin Prakash Lobo3
1Department of Chemistry, Indian Institute of Technology Madras (IIT Madras), Chennai 600 036, Tamil Nadu, India.
International journal of biological macromolecules
|September 2, 2023
概括
固体奇托经历高效的N-碳素甲基化和无需溶剂的交叉连接. 这种新的方法产生了一种用于吸附和催化的多功能材料,展示了酸盐.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 绿色化学 绿色化学
背景情况:
- 基托是一种生物聚合物,由于其有反应性氨基群,它具有化学修饰的潜力.
- 开发无溶剂和无催化剂的基托修饰方法对于可持续化学至关重要.
- 交叉连接的奇托衍生物可以表现出各种应用的增强性质.
研究的目的:
- 报告一种新的,无溶剂和无催化剂的方法,用于N-carboxymethylation和固体奇多的交叉连接.
- 为了描述由此产生的交叉链接的碳氧甲基基托.
- 为了评估修改后的奇托桑在吸附和催化中的性能.
主要方法:
- 在没有溶剂或催化剂的情况下,用固体单酸加热固体奇托.
- 使用NMR光谱和控制反应 (lysine) 确认N-碳素甲基化.
- 通过酸性溶液中的不溶性和FTIR光谱来评估交叉连接;控制反应 (乙基酸盐).
主要成果:
- 通过简单的加热过程,成功地实现了N-碳素甲基化和固体奇多的交联.
- 鉴定证实了N-carboxymethyl chitosan的形成,并将交叉连接归因于静电相互作用.
- 由此产生的材料有效地吸附甲基色和光素,并催化有机反应 (aza-Michael,Hantzsch,胺合成).
结论:
- 已经开发出一种绿色和高效的方法,用于将奇托改造为交叉连接的N-碳甲基奇托.
- 合成的材料在污染物吸附和有机催化中展现出有前途的应用.
- 这种方法突出了固态反应在功能化生物聚合物的潜力.
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