2-脲基-4[1氢]-嘧啶酮四氢键萘-蒽超分子组装体系:“通过键”机制的单重态能量传递  

Through-Bond Singlet-Singlet Energy Transfer in Naphthalene Anthracene Supramolecular Ensemble via 2-Ureido-4[1H]-Pyrimidinone Quadruple Hydrogen-Bonded Module

作　　者：俞茂林[1,2] 王素敏[1] 冯科[1] 佟振合[1] 吴骊珠[1] 

机构地区：[1]中国科学院理化技术研究所光化学转换与功能材料重点实验室,北京100190 [2]中国科学院研究生院,北京100049

出　　处：《影像科学与光化学》2011年第4期278-286,共9页Imaging Science and Photochemistry

基　　金：科技部国家重点基础研究发展规划项目(2007CB808004;2007CB36001);国家自然科学基金资助项目(20732007;21002108;91027041);中科院基础局的资助

摘　　要：设计合成了基于2-脲基-4[1氢]-嘧啶酮AADD四氢键萘-蒽超分子组装体系UPNa.UPAn.稳态和时间分辨荧光光谱研究表明UPNa.UPAn四氢键组装体可以发生从萘到蒽的高效、快速的单重态能量传递过程.体系内光诱导单重态能量传递的速度和效率远大于通过F rster机制的单重态能量传递速率,表明组装体系UPNa.UPAn中萘向蒽的光诱导单重态能量传递是经由体系内的F rster和"通过AADD四氢键"的超交换机制发生的.A relative rigid naphthalene-anthracene supramolecular ensemble has been designed and synthesized via 2-ureido-4[1H]-pyrimidinone quadruple hydrogen-bonded module.Steady-state and time-resolved fluorescence profiles demonstrate that the singlet-singlet energy transfer occurs effectively from naphthalene to anthracene moieties in ensemble UPNa· UPAn.The rate constant and efficiency for photoinduced energy transfer in ensemble UPNa·UPAn is much greater than that of theoretical calculation through Frster mechanism.Therefore,the singlet-singlet energy transfer process takes place via Frster mechanism and ＂through AADD quadruple hydrogen bond＂ mechanism in this ensemble.

关 键 词：能量传递 萘 蒽 2-脲基-4[1氢]-嘧啶酮四氢键 

分 类 号：O626.41[理学—有机化学]