Journal ArticleDOI
The one-electron oxidation of metalloporphyrins.
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This article is published in Journal of the American Chemical Society.The article was published on 1969-07-16. It has received 235 citations till now. The article focuses on the topics: Zinc & Tin.read more
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Modulating charge separation and charge recombination dynamics in porphyrin-fullerene linked dyads and triads: Marcus-normal versus inverted region.
Hiroshi Imahori,Koichi Tamaki,Dirk M. Guldi,Chuping Luo,Mamoru Fujitsuka,Osamu Ito,Yoshiteru Sakata,Shunichi Fukuzumi +7 more
TL;DR: The lowest lying charge-separated state of all the investigated systems, namely, that of ferrocenium ion and the C60 radical anion pair in the Fc-ZnP-C60 triad, has been generated with the highest quantum yields and reveals a lifetime as long as 16 micros.
Journal ArticleDOI
Charge separation in a novel artificial photosynthetic reaction center lives 380 ms.
Hiroshi Imahori,Dirk M. Guldi,Koichi Tamaki,Yutaka Yoshida,Chuping Luo,Yoshiteru Sakata,Shunichi Fukuzumi +6 more
TL;DR: An extremely long-lived charge-separated state has been achieved successfully using a ferrocene-zincporphyrin-freebaseporphyrin -fullerene tetrad which reveals a cascade of photoinduced energy transfer and multistep electron transfer within a molecule in frozen media as well as in solutions.
Journal ArticleDOI
Linkage and Solvent Dependence of Photoinduced Electron Transfer in Zincporphyrin-C60 Dyads
Hiroshi Imahori,Kiyoshi Hagiwara,Masanori Aoki,Tsuyoshi Akiyama,Seiji Taniguchi,Tadashi Okada,and Masahiro Shirakawa,Yoshiteru Sakata +7 more
TL;DR: In this paper, photoinduced charge separation and subsequent charge recombination were observed in a series of zincporphyrin-C60 dyads by picosecond fluorescence lifetime measurements and time-resolved transient absorption spectroscopy.
Journal ArticleDOI
Electrochemical Origin of Radical Cations Observed in Electrospray Ionization Mass Spectra
TL;DR: In this article, a variety of experimental data is presented that implicates electrochemical oxidation of analytes in the electrospray (ES) needle as the mechanism for formation of molecular radical cations observed in the ES ionization mass spectra of alkylsubstituted metalloporphyrins, polycyclic aromatic hydrocarbons (PAHs), and other compound types.
Journal ArticleDOI
The small reorganization energy of C60 in electron transfer
Imahori Hiroshi,Hagiwara Kiyoshi,Akiyama Tsuyoshi,Aoki Masanori,Taniguchi Seiji,Okada Tadashi,Shirakawa Masahiro,Sakata Yoshiteru +7 more
TL;DR: In this article, the size and shape effect of fullerene in electron transfer were evaluated. But the results were limited to two materials: C 60 and benzoquinone with comparable reduction potentials, where a relatively rigid spacer ensures similar separation distance and nature of the inteervening bonds between the redox pair.
Related Papers (5)
Electrochemical and electron paramagnetic resonance studies of metalloporphyrins and their electrochemical oxidation products.
Alexander Wolberg,Joost Manassen +1 more