Xu Hang, Nishida Jin, Ma Wei, Wu Hui, Kobayashi Motoyasu, Otsuka Hideyuki, Takahara Atsushi
Graduate School of Engineering, Kyushu University, Fukuoka 819-0395, Japan.
JST, ERATO Takahara Soft Interfaces Project, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
ACS Macro Lett. 2012 Apr 17;1(4):457-460. doi: 10.1021/mz200217d. Epub 2012 Mar 19.
In gelation chemistry, catechol groups are used as cross-linking points. Both oxidation and coordination effects of catechol were investigated for their unique features in chemistry by spectroscopic measurements. Polystyrene copolymers containing catechol groups were synthesized by free radical copolymerization of styrene and -2-(3',4'-ditriethylsilyloxyphenyl)ethyl methacrylamide, and the successive deprotection reaction was catalyzed by tetra--butylammonium fluoride. The copolymer containing catechol units afforded a dual cross-linking system based on completely different coordination and oxidation chemistries, and the competing cross-linking mechanisms are discussed. These findings are useful and important for paving the way for designing a novel bioinspired artificial adhesive surface coating and curing system.
在凝胶化学中，儿茶酚基团用作交联点。通过光谱测量研究了儿茶酚的氧化和配位作用，以了解它们在化学方面的独特特性。通过苯乙烯与-2-(3',4'-二叔乙氧基苯基)乙基甲基丙烯酰胺的自由基共聚合成了含儿茶酚基团的聚苯乙烯共聚物，并通过四丁基氟化铵催化进行连续脱保护反应。含儿茶酚单元的共聚物提供了一种基于完全不同的配位和氧化化学的双重交联体系，并讨论了相互竞争的交联机制。这些发现对于为设计新型仿生人工粘合剂表面涂层和固化体系铺平道路具有重要意义。
