A Diprotonated Porphyrin as an Electron Mediator in Photoinduced Electron Transfer in Hydrogen-Bonded Supramolecular Assemblies
A Diprotonated Porphyrin as an Electron Mediator in Photoinduced Electron Transfer in Hydrogen-Bonded Supramolecular Assemblies
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双质子化卟啉作为氢键超分子组装中光诱导电子转移的电子介体
DOI:
10.1021/acs.jpcc.9b02449
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
T. Kojima
中科院分区:
文献类型:
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作者:
W. Suzuki;H. Kotani;T. Ishizuka;M. Kawano;H. Sakai;T. Hasobe;K. Ohkubo;S. Fukuzumi;T. Kojima
We have successfully constructed hydrogen-bonded supramolecular assemblies based on a diprotonated saddle-distorted porphyrin (H4DPP2+) and redox-active molecules bearing a carboxylate group, such as a RuIIpolypyridyl complex (RuIICOO–) that can act as an electron donor and a benzyl viologen derivative (BV2+COO–) that can act as an electron acceptor. Formation of supramolecular assemblies ofH4DPP2+withRuIICOO–(H4DPP2+(RuIICOO–)2andH4DPP2+(RuIICOO–)(Cl–)) andBV2+COO–(H4DPP2+(BV2+COO–)2) was confirmed in acetone by1H NMR measurements, CSI-TOF-MS, and X-ray crystallographic analysis. The photodynamics ofH4DPP2+(RuIICOO–)2andH4DPP2+(BV2+COO–)2was elucidated by femto-, pico-, and nanosecond time-resolved transient absorption spectroscopy. InH4DPP2+(RuIICOO–)2, intrasupramolecular photoinduced electron transfer (ET) occurred from the RuIIcenter to the singlet excited state ofH4DPP2+to afford an ET state involving one-electron-reducedH4DPP•+and the corresponding one-electron-oxidized RuIIIcomplex with the lifetime of 150 ps. On the other hand, in the presence of an external electron donor, intermolecular photoinduced ET occurred from an electron donor to the triplet excited state ofH4DPP2+(BV2+COO–)2to affordH4DPP•+, following intrasupramolecular thermal ET proceeded fromH4DPP•+toBV2+COO–to formH4DPP2+(BV•+COO–)(BV2+COO–)with the lifetime of 1.1 ms. Thus,H4DPP2+can act as an electron mediator in hydrogen-bonded supramolecular assemblies. This is the first example of porphyrins as a photosensitizer and an electron mediator in hydrogen-bonded ET systems.
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DOI:
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发表时间:
2018
期刊:
影响因子:
--
作者:
K. Miyanishi;N. Ozaki;Y. Tange;H. Dekura;T. Kimura;Y. Sakawa;T. Sano;T. Tsuchiya;T. Vinci and R. Kodama;Shunichi Fukuzumi
通讯作者:
Shunichi Fukuzumi
影响因子:
3.7
作者:
C. Obondi;Gary N. Lim;Y. Jang;Prajay Patel;A. Wilson;P. Poddutoori;F. D’Souza
通讯作者:
C. Obondi;Gary N. Lim;Y. Jang;Prajay Patel;A. Wilson;P. Poddutoori;F. D’Souza
影响因子:
4.6
作者:
Corinna Matlachowski;B. Braun;S. Tschierlei;M. Schwalbe
通讯作者:
Corinna Matlachowski;B. Braun;S. Tschierlei;M. Schwalbe
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
鈴木航;小谷弘明;石塚智也;大久保敬;福住俊一;小島隆彦;Takahiko Kojima;Takahiko Kojima;Takahiko Kojima;Takahiko Kojima;T. Kojima
通讯作者:
T. Kojima
影响因子:
64.8
作者:
Umena Y.;Kawakami K.;Shen J.-R.;Kamiya N.
通讯作者:
Kamiya N.