Photoinduced Electron Transfer in π-Donor-Capped Zn(II) Porphyrins and N,N‘-Dimethyl-4,4‘-bipyridinium Supramolecular Assemblies

Photoinduced Electron Transfer in π-Donor-Capped Zn(II) Porphyrins and N,N‘-Dimethyl-4,4‘-bipyridinium Supramolecular Assemblies

π-Donor-polyoxyethylene-capped Zn(II)-porphyrins, 1−3, form supramolecular complexes with N,N‘-dimethyl-4,4‘-bipyridinium, MV2+, 4. The association constants of the resulting adducts are 8 × 104, 1 × 104, and 1 × 103 M-1, respectively. The Zn(II)-porphyrins are quenched by MV2+ by two complementary...

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Veröffentlicht in:The journal of physical chemistry. B 1998-02, Vol.102 (7), p.1159-1165
Hauptverfasser: Kaganer, Evgeny, Joselevich, Ernesto, Willner, Itamar, Chen, Zhangpin, Gunter, Maxwell J, Gayness, Throne P, Johnson, Martin R
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container_end_page 1165
container_issue 7
container_start_page 1159
container_title The journal of physical chemistry. B
container_volume 102
creator Kaganer, Evgeny
Joselevich, Ernesto
Willner, Itamar
Chen, Zhangpin
Gunter, Maxwell J
Gayness, Throne P
Johnson, Martin R
description π-Donor-polyoxyethylene-capped Zn(II)-porphyrins, 1−3, form supramolecular complexes with N,N‘-dimethyl-4,4‘-bipyridinium, MV2+, 4. The association constants of the resulting adducts are 8 × 104, 1 × 104, and 1 × 103 M-1, respectively. The Zn(II)-porphyrins are quenched by MV2+ by two complementary routes that include internal electron-transfer quenching in the supramolecular complexes and diffusional electron-transfer quenching of the free chromophore.
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title Photoinduced Electron Transfer in π-Donor-Capped Zn(II) Porphyrins and N,N‘-Dimethyl-4,4‘-bipyridinium Supramolecular Assemblies
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