摘要
实验中发现“H-型”系列偶氮苯双体同其单体相比呈现吸收峰红移的特性. 通过能量转移模型合理解释了吸收峰的红移，并验证能量转移的两个必要条件. 另外，荧光寿命的双指数特性以及Bella的量子化学理论都证实了能量转移的存在.
A series of “H-shaped” organic dimers （azobenzene derivatives） exhibit linear absorption red shift compared with their corresponding monomers experimentally. Dipolar interaction model is not appropriate for the azobenzene derivatives due to the small distance between two “D-π-A” chains. Energy transfer model is suggested for explanation of the absorption red shift. Two necessary conditions for energy transfer were verified. In addition, bi-exponential florescence-delay behavior of the dimer as well as Bella＇s quantum chemistry calculation shows evidence of energy transfer.
