Chowdhury Aniket, Mukherjee Partha Sarathi
Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, Karnataka, 560012, India.
Chempluschem. 2016 Dec;81(12):1360-1370. doi: 10.1002/cplu.201600399. Epub 2016 Sep 30.
Four new vinylanthracene-based fluorescent molecules were synthesized and characterized. The highly fluorescent vinylanthracene moiety was coupled with the ethynylbenzene group to yield rigid and electron-rich π systems, which were utilized as selective and sensitive probes for picric acid in both the solution and solid states. In solution, the molecules demonstrated signal amplification by a combined effect of photo-induced electron transfer and resonance energy transfer, whereas in the solid state the enhanced sensitivity was attributed to a collective effect of PET and exciton migration among closely spaced molecules. In direct contact mode experiments, thin films of the molecules demonstrated discernible changes in fluorescent intensity, which shows that the molecules are potential materials for in-the-field applications.
合成并表征了四种新型的基于乙烯基蒽的荧光分子。高荧光性的乙烯基蒽部分与乙炔基苯基团相连，形成刚性且富电子的π体系，该体系被用作溶液和固态下苦味酸的选择性和灵敏探针。在溶液中，这些分子通过光致电子转移和共振能量转移的联合效应实现信号放大，而在固态下，增强的灵敏度归因于PET和紧密排列分子间激子迁移的集体效应。在直接接触模式实验中，这些分子的薄膜表现出荧光强度的明显变化，这表明这些分子是现场应用的潜在材料。
