文献类型：期刊文献

英文题名：Isocyanate-functionalized starch as biorenewable backbone for the preparation and application of poly(ethylene imine) grafted starch

作者：Fu, Lixia[1];Peng, Yanqing[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Chem Biol, Sch Pharm, Shanghai 200237, Peoples R China

年份：2017

卷号：148

期号：8

起止页码：1547

外文期刊名：MONATSHEFTE FUR CHEMIE

收录：;EI(收录号：20242616448592);WOS:【SCI-EXPANDED(收录号:WOS:000405307800021)】；

基金：Financial support from National Key Technology R&D Program, Ministry of Science and Technology of the People's Republic of China (2011BAE06B02) is gratefully acknowledged.

语种：英文

外文关键词：Reactive support; Starch; Isocyanate; Catalyst; Scavenger

摘要：Reactive supports provide versatile platforms for surface decoration, affording various functional materials widely used in chemical and biological research. Considering the biodegradability, biocompatibility, and economy, starch is a suitable support media with high functionality for further chemical modifications. In this proof-of-concept study, isocyanate-functionalized starch was prepared using symmetric diisocyanates as bridging block. Its potential as a reactive platform support was evaluated from the aspects of reactivity and storage stability. Polyamine could be grafted onto this reactive support via urea linkage. The applicability of PEI grafted starch as organic base catalyst was then tested in Knoevenagel condensation as a model reaction. Moreover, the feasibility of PEI grafted starch as a scavenger was also demonstrated in the capture of acid fluorescent dye and excess electrophilic reagent.