Solvent-dependent fluorescence of donor-substituted (E)-1,2-bis(stilbenyl-1,3,4-oxadiazolyl)ethenes
作者:Heiner Detert、Erli Sugiono、Gabriele Kruse
DOI:10.1002/poc.523
日期:2002.9
The Huisgen reaction of aryltetrazoles and fumaryl chloride leads to symmetrically aryl-substituted 1,2-bis(1,3,4-oxadiazolyl)ethenes. Molecules with extended conjugated systems are accessible using stilbenyltetrazoles or higher homologues. The substitution with solubility-permitting alkoxy side-chains results in molecules of C2h symmetry, consisting of a central electron-accepting segment and two
芳基四唑和富马酰氯的Huisgen反应导致对称的芳基取代的1,2-双(1,3,4-恶二唑基)乙烯。使用二苯乙烯基四唑或更高的同源物可得到具有扩展共轭体系的分子。用允许溶解度的烷氧基侧链取代可产生C 2 h分子对称,由一个中心电子接受段和两个末端电子密度释放单元组成。吸收光谱的溶剂变色可以忽略不计,而在发射光谱中观察到强正溶剂变色与量子产率的急剧下降有关,表明分子内电荷转移。讨论了不同烷氧基取代方式对发光性能的影响。版权所有©2002 John Wiley&Sons,Ltd.