Spectroscopic Probing of the Dynamic Self-Assembly of an Amphiphilic Naphthalene Diimide Exhibiting Reversible Vapochromism
作者:Mohit Kumar、Subi J. George
DOI:10.1002/chem.201101642
日期:2011.9.26
Fluorescent nose: The reversible “turn‐on” vapochromism of a self‐assembled amphiphilic naphthalene diimide derivative in solution and film states is presented. This property was found to be due to solvent–vapor‐responsive, dynamic reorganization in molecular packing in going from J‐type aggregates (blue fluorescent; see left‐hand side of scheme) to preassociated H‐type excimer states, with enhanced
荧光鼻:介绍了一种自组装的两亲性萘二酰亚胺衍生物在溶液和薄膜状态下可逆的“开启”气相致变色现象。发现此特性是由于分子堆积中的溶剂-蒸气响应,动态重组,从J型聚集体(蓝色荧光;请参见方案的左侧)到预先关联的H型准分子态,绿色荧光增强了。