文献类型：期刊文献

英文题名：Photocleavable coumarin crosslinkers based polystyrene microgels: phototriggered swelling and release

作者：Huang, Qi[1];Bao, Chunyan[1];Ji, Wei[1];Wang, Quanyu[1];Zhu, Linyong[1]

机构：[1]E China Univ Sci & Technol, Inst Fine Chem, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China

年份：2012

卷号：22

期号：35

起止页码：18275

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY

收录：;EI(收录号：20123415356621);WOS:【SCI-EXPANDED(收录号:WOS:000307582800028)】；

基金：This work was supported by NSFC (20903039, 21173078), Research Fund for the Doctoral Program of Higher Education of China, Shanghai Sci. Tech. Comm. (11JC1403300), and Fundamental Research Funds for the Central University.

语种：英文

外文关键词：Photodegradation - Ultraviolet spectroscopy - Gels

摘要：Two types of photocleavable crosslinkers (CLA and CLB) based on 7-amino coumarin moieties have been synthesized. The ingenious design for the crosslinkers with different vinyl functionalities was aimed to investigate the influence of the crosslinker's structure on the photodegradation and photoswelling behavior of the constructed microgels. Analysis of DLS, UV spectra and fluorescence spectra verified the original intention and the generated microgels revealed structure-dependent photoregulated swelling and degradation behavior. The successive loading and release of the hydrophobic Nile Red (NR) dye of the microgel upon visible light irradiation further showed its ability to be used as an excellent nanocarrier for hydrophobic compounds.