标题：Photo-induced crosslinking of water-soluble polymers with a new photobase generator
作者：Cao, C.B.;Zhou, C.;Sun, X.;Gao, J.P.;Wang, Z.Y.
作者机构：[Cao, C.B] School of Chemistry and Chemical Engineering, Shandong University, Jinan 250061, Shandong, China, Department of Chemistry, Carleton Univers 更多
通讯作者地址：[Wang, ZY]Carleton Univ, Dept Chem, 1125 Colonel Dr, Ottawa, ON K1S 5B6, Canada.
来源：Polymer: The International Journal for the Science and Technology of Polymers
关键词：Photo-induced crosslinking;Photobase;Water-soluble polymers
摘要：A strong bicyclic guanidine base, 1,5,7-triaza-bicyclo[4.4.0]dec-5-ene (TBD), is photo-generated from its tetraphenylborate salt (TBD·HBPh_4) and can effectively catalyze the transesterification reaction between the ester and hydroxy groups in polymers. Accordingly, with TBD·HBPh_4 as a photobase generator, a water-soluble polymer blend, namely poly(1-vinylpyrrolidone-co-2-dimethylaminoethyl methacrylate) and 2-hydroxyethyl cellulose, has been developed as a potential eco-friendly photoresist. This photoresist system uses only water as a solvent and as a developer, rather than organic solvents and aqueous alkaline developers. The effects of the amount of photobase generator, polymer composition and photolithographic conditions on the photo-induced crosslinking and patterning of water-soluble polymers were studied.