Unique Fluorescent Properties of 1-Aryl-3,4-diphenylpyrido[1,2-<i>a</i>]benzimidazoles
作者:Keisuke Hirano、Yoji Oderaotoshi、Satoshi Minakata、Mitsuo Komatsu
DOI:10.1246/cl.2001.1262
日期:2001.12
Novel fluorophores, 1-aryl-3,4-diphenylpyrido[1,2-a]benzimidazoles were synthesized. They emit intense blue to green fluorescence in solution (Φ: ca. 0.7) and show weak negative solvatofluorochromism by about 10 nm which was caused by the combination of π–π* and n–π* transitions. In the powdered form, they emit intense fluorescence whose intensity is at least two times stronger than that of Alq3.
合成了新型荧光团--1-芳基-3,4-二苯基吡啶并[1,2-a]苯并咪唑。它们在溶液中发出强烈的蓝绿色荧光(Φ:约 0.7),并在约 10 纳米处显示出弱的负溶解荧光,这是由 π-π* 和 n-π* 转变共同引起的。在粉末状态下,它们会发出强烈的荧光,其强度至少是 Alq3 的两倍。