Meso-to-meso Sulfide- and Disulfide-Bridged Subporphyrin Dimers

Graeme Copley; Daiki Shimizu; Juwon Oh; Jooyoung Sung; Ko Furukawa; Dongho Kim; Atsuhiro Osuka

doi:10.1002/ejoc.201600285

Meso-to-meso Sulfide- and Disulfide-Bridged Subporphyrin Dimers

Graeme Copley, Daiki Shimizu, Juwon Oh, Jooyoung Sung, Ko Furukawa, Dongho Kim, Atsuhiro Osuka

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

Treatment of meso-chlorosubporphyrin with controlled equivalents of Na₂S·9H₂O in DMF led to the formation of either meso-to-meso sulfide (S)-bridged dimer 4 or disulfide (SS)-bridged subporphyrin dimer 6. S-bridged dimer 4 displayed a split Soret-like band and a large Stokes shift and became a fully delocalized one-quantum system in the S₁ state, as indicated by femtosecond transient absorption anisotropy measurements and theoretical calculations. Contrastingly, SS-bridged dimer 6 showed a broad but nonsplit Soret-like band, no fluorescence, and very fast S₁ decay with a lifetime of 4 ps, which indicated the presence of a rapid decay channel.

Original language	English
Pages (from-to)	1977-1981
Number of pages	5
Journal	European Journal of Organic Chemistry
Volume	2016
Issue number	11
DOIs	https://doi.org/10.1002/ejoc.201600285
Publication status	Published - 2016 Apr 1

Bibliographical note

Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

All Science Journal Classification (ASJC) codes

Physical and Theoretical Chemistry
Organic Chemistry

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10.1002/ejoc.201600285

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title = "Meso-to-meso Sulfide- and Disulfide-Bridged Subporphyrin Dimers",

abstract = "Treatment of meso-chlorosubporphyrin with controlled equivalents of Na2S·9H2O in DMF led to the formation of either meso-to-meso sulfide (S)-bridged dimer 4 or disulfide (SS)-bridged subporphyrin dimer 6. S-bridged dimer 4 displayed a split Soret-like band and a large Stokes shift and became a fully delocalized one-quantum system in the S1 state, as indicated by femtosecond transient absorption anisotropy measurements and theoretical calculations. Contrastingly, SS-bridged dimer 6 showed a broad but nonsplit Soret-like band, no fluorescence, and very fast S1 decay with a lifetime of 4 ps, which indicated the presence of a rapid decay channel.",

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T1 - Meso-to-meso Sulfide- and Disulfide-Bridged Subporphyrin Dimers

AU - Copley, Graeme

AU - Shimizu, Daiki

AU - Oh, Juwon

AU - Sung, Jooyoung

AU - Furukawa, Ko

AU - Kim, Dongho

AU - Osuka, Atsuhiro

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N2 - Treatment of meso-chlorosubporphyrin with controlled equivalents of Na2S·9H2O in DMF led to the formation of either meso-to-meso sulfide (S)-bridged dimer 4 or disulfide (SS)-bridged subporphyrin dimer 6. S-bridged dimer 4 displayed a split Soret-like band and a large Stokes shift and became a fully delocalized one-quantum system in the S1 state, as indicated by femtosecond transient absorption anisotropy measurements and theoretical calculations. Contrastingly, SS-bridged dimer 6 showed a broad but nonsplit Soret-like band, no fluorescence, and very fast S1 decay with a lifetime of 4 ps, which indicated the presence of a rapid decay channel.

AB - Treatment of meso-chlorosubporphyrin with controlled equivalents of Na2S·9H2O in DMF led to the formation of either meso-to-meso sulfide (S)-bridged dimer 4 or disulfide (SS)-bridged subporphyrin dimer 6. S-bridged dimer 4 displayed a split Soret-like band and a large Stokes shift and became a fully delocalized one-quantum system in the S1 state, as indicated by femtosecond transient absorption anisotropy measurements and theoretical calculations. Contrastingly, SS-bridged dimer 6 showed a broad but nonsplit Soret-like band, no fluorescence, and very fast S1 decay with a lifetime of 4 ps, which indicated the presence of a rapid decay channel.

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Meso-to-meso Sulfide- and Disulfide-Bridged Subporphyrin Dimers

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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