Kim Sung Kuk, Bok Ju Han, Bartsch Richard A, Lee Jin Yong, Kim Jong Seung
Department of Chemistry, Dankook University, Seoul, Korea.
Org Lett. 2005 Oct 27;7(22):4839-42. doi: 10.1021/ol051609d.
[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.
[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。
