Tuning the Electron Acceptor in Phthalocyanine-Based Electron Donor-Acceptor Conjugates

被引:10
|
作者
Sekita, Michael [2 ,3 ]
Jimenez, Angel J. [1 ]
Luisa Marcos, M. [4 ]
Caballero, Esmeralda [1 ]
Salome Rodriguez-Morgade, M. [1 ]
Guldi, Dirk M. [2 ,3 ]
Torres, Tomas [1 ,5 ]
机构
[1] Univ Autonoma Madrid, Dept Quim Organ, E-28049 Madrid, Spain
[2] Univ Erlangen Nurnberg, Dept Chem & Pharm, D-91058 Erlangen, Germany
[3] Univ Erlangen Nurnberg, Interdisciplinary Ctr Mol Mat, D-91058 Erlangen, Germany
[4] Univ Autonoma Madrid, Dept Quim, E-28049 Madrid, Spain
[5] IMDEA Nanociencia, Fac Ciencias, Madrid 28049, Spain
关键词
anhydrides; electron transfer; imides; perylene; phthalocyanine; SENSITIZED SOLAR-CELLS; ION PAIR STATES; ZINC PHTHALOCYANINE; PHOTOPHYSICAL PROPERTIES; DYE SENSITIZATION; CHARGE-TRANSFER; ENERGY-TRANSFER; SPECTROSCOPIC PROPERTIES; NANOCRYSTALLINE TIO2; PERYLENEDIIMIDE DYAD;
D O I
10.1002/chem.201503237
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Zinc phthalocyanines (ZnPc) have been attached to the peri-position of a perylenemonoimide (PMI) and a perylenemonoanhydride (PMA), affording electron donor-acceptor conjugates 1 and 2, respectively. In addition, a perylene-monoimide-monoanhydride (PMIMA) has been connected to a ZnPc through its imido position to yield the ZnPc-PMIMA conjugate 10. The three conjugates have been studied for photoinduced electron transfer. For ZnPc-PMIMA 10, electron transfer occurs upon both ZnPc and PMIMA excitation, giving rise to a long-lived (340 ps) charge-separated state. For ZnPc-PMI 1 and ZnPc-PMA 2, stabilization of the radical ion pair states by using polar media is necessary. In THF, photoexcitation of either ZnPc or PMI/PMA produces charge-separated states with lifetimes of 375 and 163 ps, respectively.
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页码:19028 / 19040
页数:13
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