应用化学2012，Vol.29Issue(2)：161-165,5.DOI:10.3724/SP.J.1095.2012.00134
光响应性树枝状偶氮苯单分子层
Photo-responsive Azobenzene-dendron Monolayers
摘要
Abstract
We prepared azobenzene dendron monolayers on the Au or quartz substrates by DCC(N,N-dicyclo-hexylcarbodiimide) -catalyzed surface amidation reactions between the carboxyl acid groups at the focal point of the dendrons and the amine groups on the surface of Au or quartz, infrared reflection-absorption spectroscopy (IRRAS) , UV-Vis absorption and Raman spectroscopies were performed to characterize these azobenzene dendron monolayers. The thickness of the G-4 monolayers with different isomeric forms was measured using ellipsometry spectra, and a value of (2.38 ±0.09) nm was obtained for the trans-form, and (1.88 ± 0. 08) nm for the cis-form. The interaction between the G-4 monolayers in different isomeric forms and proteins with different isoelectric points ( pI ) was studied by surface plasma resonance ( SPR ) , which demonstrated that the G-4 monolayers had a negatively charged surface that preferentially adsorbed positive proteins. The surface potential of the dendron monolayers became more negative when the monolayers was changed from the trans-form to cis-form, resulting in adsorbing more positively charged proteins.关键词
偶氮苯/单分子层/树枝状分子/蛋白质吸附Key words
azobenzene/monolayer/dendrimers/protein adsorption分类
化学化工引用本文复制引用
杨婷,夏常磊,刘和文..光响应性树枝状偶氮苯单分子层[J].应用化学,2012,29(2):161-165,5.基金项目
国家自然科学基金重大项目(21090354)资助 （21090354）
