Quinoxaline−Imidazolium Receptors for Unique Sensing of Pyrophosphate and Acetate by Charge Transfer
作者:N. Jiten Singh、Eun Jin Jun、Kavitha Chellappan、Daniel Thangadurai、R. Prakash Chandran、In-Chul Hwang、Juyoung Yoon、Kwang S. Kim
DOI:10.1021/ol062849b
日期:2007.2.1
Quinoxaline derivatives (1-4) bearing two imidazolium moieties are found to strongly bind anions and show unique charge-transfer fluorescent responses to pyrophosphate and acetate, whereas they show excimer formation with other anions. Anion-binding studies are investigated with fluorescence and H-1 NMR analysis, single-crystal X-ray analysis, and theoretical calculations.