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- Publisher Website: 10.1021/ja00087a026
- Scopus: eid_2-s2.0-0001233699
- WOS: WOS:A1994NG88900026
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Article: Photoinduced Electron Transfer in Supramolecular Assemblies Composed of Dialkoxybenzene-Tethered Ruthenium(II) Trisbipyridine and Bipyridinium Salts
Title | Photoinduced Electron Transfer in Supramolecular Assemblies Composed of Dialkoxybenzene-Tethered Ruthenium(II) Trisbipyridine and Bipyridinium Salts |
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Authors | |
Issue Date | 1994 |
Citation | Journal of the American Chemical Society, 1994, v. 116, n. 8, p. 3399-3404 How to Cite? |
Abstract | Ruthenium(II) tris{4, 4ʹ-bis[(methyleneoxy)tris(ethyleneoxy)(4-methoxybenzene)]-2, 2ʹ-bipyridine} (1), forms supramolecular complexes with N, N'-dimethyl-4, 4ʹ-bipyridinium, MV2+ (2), and with cyclo [bis(N, N'-p-xylylene-4, 4ʹ-bipyridinium)], BXV4+ (3). The association constants of the complexes generated between the dialkoxybenzene-tethered units of 1 and the electron acceptors 2 and 3 correspond to Ka = 28 ± 1 M-1 for MV2+ and Ka = 1200 ± 100 M-1 for BXV4+. Time-resolved laser flash photolysis and steady-state emission studies show that electron transfer from excited 1 proceeds by an intramolecular pathway to the electron acceptors organized in the supramolecular assemblies, kiq = 1.7 X 108 s-1 for MV2+ and kiq = 2.9 X 108 s-1 for BXV4+, and by a diffusional route from free-uncomplexed 1, kdq = 1.9 X 108 M-1 s-1 for MV2+ and kdq = 3.4 X 108 M-1 s-1 for BXV4+. Formation of the supramolecular assemblies between 1 and 2 or 3 is supported by the intramolecular electron-transfer quenching of 1 and by the fact that the assemblies dissociate upon addition of β-cyclodextrin.© 1994, American Chemical Society. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/332293 |
ISSN | 2023 Impact Factor: 14.4 2023 SCImago Journal Rankings: 5.489 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Seiler, M. | - |
dc.contributor.author | Dürr, H. | - |
dc.contributor.author | Willner, I. | - |
dc.contributor.author | Joselevich, E. | - |
dc.contributor.author | Doron, A. | - |
dc.contributor.author | Stoddart, J. F. | - |
dc.date.accessioned | 2023-10-06T05:10:20Z | - |
dc.date.available | 2023-10-06T05:10:20Z | - |
dc.date.issued | 1994 | - |
dc.identifier.citation | Journal of the American Chemical Society, 1994, v. 116, n. 8, p. 3399-3404 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.uri | http://hdl.handle.net/10722/332293 | - |
dc.description.abstract | Ruthenium(II) tris{4, 4ʹ-bis[(methyleneoxy)tris(ethyleneoxy)(4-methoxybenzene)]-2, 2ʹ-bipyridine} (1), forms supramolecular complexes with N, N'-dimethyl-4, 4ʹ-bipyridinium, MV2+ (2), and with cyclo [bis(N, N'-p-xylylene-4, 4ʹ-bipyridinium)], BXV4+ (3). The association constants of the complexes generated between the dialkoxybenzene-tethered units of 1 and the electron acceptors 2 and 3 correspond to Ka = 28 ± 1 M-1 for MV2+ and Ka = 1200 ± 100 M-1 for BXV4+. Time-resolved laser flash photolysis and steady-state emission studies show that electron transfer from excited 1 proceeds by an intramolecular pathway to the electron acceptors organized in the supramolecular assemblies, kiq = 1.7 X 108 s-1 for MV2+ and kiq = 2.9 X 108 s-1 for BXV4+, and by a diffusional route from free-uncomplexed 1, kdq = 1.9 X 108 M-1 s-1 for MV2+ and kdq = 3.4 X 108 M-1 s-1 for BXV4+. Formation of the supramolecular assemblies between 1 and 2 or 3 is supported by the intramolecular electron-transfer quenching of 1 and by the fact that the assemblies dissociate upon addition of β-cyclodextrin.© 1994, American Chemical Society. All rights reserved. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of the American Chemical Society | - |
dc.title | Photoinduced Electron Transfer in Supramolecular Assemblies Composed of Dialkoxybenzene-Tethered Ruthenium(II) Trisbipyridine and Bipyridinium Salts | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1021/ja00087a026 | - |
dc.identifier.scopus | eid_2-s2.0-0001233699 | - |
dc.identifier.volume | 116 | - |
dc.identifier.issue | 8 | - |
dc.identifier.spage | 3399 | - |
dc.identifier.epage | 3404 | - |
dc.identifier.eissn | 1520-5126 | - |
dc.identifier.isi | WOS:A1994NG88900026 | - |