作者:Sarah E. Border、Radoslav Z. Pavlović、Lei Zhiquan、Michael J. Gunther、Han Wang、Honggang Cui、Jovica D. Badjić
DOI:10.1002/chem.201803693
日期:2019.1.2
Discovering novel and functional photoresponsive materials is of interest for improving controlled release of molecules and scavenging toxic compounds for cleaning our environment or designing chemosensors. In this study, we report on the photoinduced decarboxylation of basket 16−, containing three glutamic acids at its rim. This concave compound is, in an aqueous environment (30 mm phosphate buffer at pH 7
发现新颖的功能性光响应材料对于改善分子的受控释放并清除有毒化合物以清洁环境或设计化学传感器具有重要意义。在这项研究中,我们报告了篮子1 6−的光诱导脱羧,篮子的边缘含有3种谷氨酸。这种凹面化合物在水性环境(pH 7.0的30 m m磷酸盐缓冲液)中是单体(1 H NMR DOSY,DLS),其谷氨酸残基随机排列在其边缘(1 H NMR和MM-OPLS3)。1 6−的辐照(300 nm)导致其α-羧酸盐被完全去除,从而形成两亲2 3−拥有γ-羧酸盐。光化学转化是通过1 H NMR光谱和ESI质谱观察到的与单脱羧和双脱羧产物的连续反应。两亲2 3-是一个预组织分子(MM-OPLS3),在水,骨料成有机纳米颗粒(大约在50-200直径纳米; DLS,TEM和低温TEM),其具有12μ的临界聚集浓度米( UV / Vis)。由于光触发了单体1 6−向纳米颗粒2 3−的转变,因此我们认为,软材料的刺