一种基于静态芘激基缔合物形成的氟离子选择性电位化学传感器。

A fluoride-selective PCT chemosensor based on formation of a static pyrene excimer.

作者信息

Kim Sung Kuk, Bok Ju Han, Bartsch Richard A, Lee Jin Yong, Kim Jong Seung

机构信息

Department of Chemistry, Dankook University, Seoul, Korea.

出版信息

Org Lett. 2005 Oct 27;7(22):4839-42. doi: 10.1021/ol051609d.

DOI:10.1021/ol051609d

PMID:16235902

Abstract

[reaction: see text] Calixarene-based fluorescent chemosensor 1 with two fluorogenic pyrene units conjugated to amide groups as guest recognition sites is synthesized. Complexation of F(-) by 1 causes a red shift of its absorption band to 400 nm (Deltalambda = 54 nm) and a blue shift of the excimer emission to 470 nm (Deltalambda = 12 nm) together with enhanced fluorescence intensity. The blue-shifted excimer emission is attributed to a pyrene dimer formed in the ground state, a so-called static excimer.

摘要

[反应：见正文] 合成了基于杯芳烃的荧光化学传感器1，其具有两个与酰胺基团共轭的荧光芘单元作为客体识别位点。1与F(-)的络合导致其吸收带红移至400 nm（Δλ = 54 nm），准分子发射蓝移至470 nm（Δλ = 12 nm），同时荧光强度增强。蓝移的准分子发射归因于在基态形成的芘二聚体，即所谓的静态准分子。