Photoinduced Triplet-Triplet Energy Transfer in a 2-Ureido-4(1H)-Pyrimidinone-Bridged, Quadruply Hydrogen-Bonded Ferrocene-Fullerene Assembly

被引：26

作者：

Feng, Ke ^{[1
]}

Yu, Mao-Lin ^{[1
]}

Wang, Su-Min ^{[1
]}

Wang, Ge-Xia ^{[1
]}

Tung, Chen-Ho ^{[1
]}

Wu, Li-Zhu ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Photochem Convers & Optoelect Mat, Tech Inst Phys & Chem, Beijing 100190, Peoples R China

来源：

CHEMPHYSCHEM | 2013年 / 14卷 / 01期

基金：

中国国家自然科学基金;

关键词：

energy transfer; fullerenes; hydrogen bonds; metallocenes; self-assembly; INTRAMOLECULAR ELECTRON-TRANSFER; MODIFIED CURTIUS REACTION; CONVENIENT REAGENT; CHARGE SEPARATION; SYSTEM; DYADS; STATE; NORBORNADIENE; TRIAD; PORPHYRIN)-FULLERENE;

D O I：

10.1002/cphc.201200818

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

2-Ureido-4(1H)-pyrimidinone-bridged ferrocenefullerene assembly I is designed and synthesized for elaborating the photoinduced electron-transfer processes in self-complementary quadruply hydrogen-bonded modules. Unexpectedly, steady-state and time-resolved spectroscopy reveal an inefficient electron-transfer process from the ferrocene to the singlet or triplet excited state of the fullerene, although the electron-transfer reactions are thermodynamically feasible. Instead, an effective intra-assembly triplettriplet energy-transfer process is found to be operative in assembly I with a rate constant of 9.2 x 105 s(-1) and an efficiency of 73% in CH2Cl2 at room temperature.

引用

页码：198 / 203

页数：6

共 45 条

[1] Photoinduced electron transfer competitive with energy transfer of the excited triplet state of [60]fullerene to ferrocene derivatives revealed by combination of transient absorption and thermal lens measurements [J].