Dimeric quinacridone cyclophanes: Synthesis,structures,and photophysical properties  

作　　者：JAVAD Iqbal 

机构地区：[1]State Key Laboratory of Supramolecular Structure and Materials [2]College of Chemistry,Jilin University

出　　处：《Science China Chemistry》2011年第2期314-319,共6页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (50773027 & 50903037)

摘　　要：Two novel quinacridone (QA) cyclophanes with intrinsic intramolecular dye-dye interactions have been designed and synthesized.X-ray crystal structures as well as detailed photophysical properties have been well demonstrated.These two dyes have a major advantage that efficient fluorescence quenching can be observed even in their dilute solutions.A comparison of photophysical properties between the dimeric QA cyclophane and its reference monomeric counterpart indicates that the dimerization is predominant for the fluorescence quenching of QA dyes in solution.This study provided some model QA derivatives with dimeric structures for understanding the fluorescence quenching of QA dyes in solutions.Two novel quinacridone （QA） cyclophanes with intrinsic intramolecular dye-dye interactions have been designed and synthesized. X-ray crystal structures as well as detailed photophysical properties have been well demonstrated. These two dyes have a major advantage that efficient fluorescence quenching can be observed even in their dilute solutions. A comparison of photophysical properties between the dimeric QA cyclophane and its reference monomeric counterpart indicates that the dimerization is predominant for the fluorescence quenching of QA dyes in solution. This study provided some model QA derivatives with dimeric structures for understanding the fluorescence quenching of QA dyes in solutions.

关 键 词：QUINACRIDONE CYCLOPHANES dye-dye interactions PHOTOPHYSICS fluorescence quenching 

分 类 号：O631.3[理学—高分子化学]