Immobilization of Styrene-Substituted 1,3,4-Oxadiazoles into Thermoreversible Luminescent Organogels and Their Unexpected Photocatalyzed Rearrangement
作者:Frédéric Dumur、Emmanuel Contal、Guillaume Wantz、Trang N. T. Phan、Denis Bertin、Didier Gigmes
DOI:10.1002/chem.201202246
日期:2013.1.21
A series of styrene‐substituted 1,3,4‐oxadiazoles has been designed and investigated as new low‐molecular‐weight organogelators. The photophysical properties of the resulting thermoreversible organogels have been characterized by UV/Vis absorption and luminescence spectroscopies. Surprisingly, the gelation ability of the oxadiazoles depended on the presence of the styrene moiety as gelation of the
已经设计并研究了一系列苯乙烯取代的1,3,4-恶二唑作为新型低分子量有机胶凝剂。通过UV / Vis吸收和发光光谱学表征了所得热可逆有机凝胶的光物理性质。出人意料的是,恶二唑的胶凝能力取决于苯乙烯部分的存在,因为所研究的恶二唑的胶凝在不存在的情况下不会发生。凝胶形成伴随着超分子状态下有机胶凝剂荧光的改变。凝胶的紫外线照射通过串联[4 + 2]和[3 + 2]级联反应引起固定的带有苯乙烯部分的1,3,4-恶二唑的重排。辐射后凝胶的结构改变和颜色变化也很明显。