摘要
具有良好光致变色性质的双二芳烯DDTE-1、DDTE-2和DDTE-3分子在紫外光下的光异构化会引起有效的分子内能量传递,使它们的荧光被淬灭从而构成高效的光控荧光开关。荧光开关的工作效率和响应水平取决于其闭环态二芳烯(DTE)单元和发荧光的桥基之间能量的匹配程度,而激发态桥基的能量被其上的取代基所调制。基于双二芳烯C—O异构体的特殊性质,讨论了分子内能量传递的过程。
Photoisomerizations of the three diarylethene dimers caused by UV light resulted in effective intramolecular energy transfer processes and make their fluorescence emissions quenched. The switching efficiencies and responsive levels of such photocontrolled fluorescent systems depended on the matching degrees of energies between their ring-closed DTE units and fl^lorescent bridge groups which were tuned by the different substituents. According to the special prop- erties of their C-O photoisomers, we discussed the details of intramolecular energy transfer.
出处
《信息记录材料》
2012年第2期5-9,共5页
Information Recording Materials
基金
国家自然科学基金(No.20101301673)
清华大学自主科研计划(No.20111081235
20111081011)资助项目
关键词
分子内能量传递
双二芳烯
光控
荧光开关
intramolecular energy transfer
diarylethene dimer
photocontrolled
fluorescent switch
