Chromophores ranging from simple small molecule π-conjugated systems comprised of phenylene ethynylene or fluorenylethynyl units to cross-conjugated Bunz-type cruciforms have been derivatized to include 1,3-bis(dimethylaminomethyl)phenyl moieties. The photophysical responsiveness of these diamino-substituted chromophores to metal ions has been examined. Both emission enhancement (turn-on) and ratiometric fluorescence detection of Cu2+ and Zn2+ ions have been achieved in THF.
从简单的小分子π-共轭体系(由
苯乙炔或
芴乙炔单元构成)到交叉共轭的Bunz型十字形化合物,这些色素已被衍生化以包含1,3-双(N,N-二
甲基氨基甲基)苯基基团。这些二
氨基取代色素对
金属离子的光物理响应性已被研究。在THF中,已实现对Cu2+和Zn2+离子的发射增强(开关)和比率荧光检测。