Synthesis and Properties of Axially Symmetrical Rigid Visible Light-Harvesting Systems Containing [60]Fullerene and Perylenebisimide
作者:San-E Zhu、Kai-Qing Liu、Xue-Fei Wang、An-Dong Xia、Guan-Wu Wang
DOI:10.1021/acs.joc.6b02042
日期:2016.12.16
Two visible light-harvesting perylenebisimide (PDI)-[60]fullerene (C60) systems, dyad P1 with one C60 unit and triad P2 with two C60 units, have been synthesized. Both systems are axially symmetrical with a rigid biphenyl linker, ensuring a relatively fixed spatial distance between the donor and acceptor, preventing through-space interaction, and enhancing energy transfer. Steady-state and transient
singlet-singlet energy transfer in C70-P-B was confirmed by the luminescence study. The backward triplet excitedstate energy transfer from C70 moiety to perylene then occurs to populate 3perylene*. Thus, the triplet excited states of C70-P-B are distributed on both C70 and perylene moiety with lifetimes of 23 ± 1 μs and 175 ± 17 μs, respectively. C70-P-B exhibits excellent photooxidation capacity, and
Intramolecular energy transfer in a tetra-coumarin perylene system: influence of solvent and bridging unit on electronic properties
作者:Johannes H. Hurenkamp、Wesley R. Browne、Ramūnas Augulis、Audrius Pugžlys、Paul H. M. van Loosdrecht、Jan H. van Esch、Ben L. Feringa
DOI:10.1039/b711681k
日期:——
is reported, in which an energy-transfer efficiency of >99% is achieved. Comparison of the excited-state properties of the donor-acceptor system with model compounds revealed that although the photophysicalproperties of the perylene bisimide acceptor unit are affected considerably by the nature of the substituent at the imide positions and the solvent employed, through-bond interaction between the