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Novel supramolecular charge-transfer systems based on bis(18-crown-6)stilbene and viologen analogues bearing two ammonioalkyl groups
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2005 (English)In: NEW JOURNAL OF CHEMISTRY, ISSN 1144-0546, Vol. 29, no 7, 881-94 p.Article in journal (Refereed) Published
Abstract [en]

A series of new viologen analogues bearing two ammonioalkyl groups (2-4) were synthesized in order to study their complexation with bis(18-crown-6)stilbene (1b). Electronic spectroscopy and H-1 NMR measurements show that in acetonitrile, bis( crown) stilbene 1b forms highly stable 1 : 1 and 2 : 1 charge-transfer (CT) complexes with pi-acceptors 2-4 owing to host-guest bonding. The influence of geometric and electronic factors on the complex formation constants are discussed. The structures of the supramolecular CT complexes are analyzed on the basis of H-1 and C-13 NMR data obtained in solution and in the solid state. X-Ray diffraction data for 1b and for model tetramethoxystilbene are also reported.

Place, publisher, year, edition, pages
2005. Vol. 29, no 7, 881-94 p.
Keyword [en]
DONOR-ACCEPTOR COMPLEXES, CONTAINING STYRYL DYES, SOLID-STATE, STILBENE, ETHERS, RECOGNITION, SENSORS, NMR
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:umu:diva-13403DOI: 10.1039/b500667hOAI: oai:DiVA.org:umu-13403DiVA: diva2:153074
Available from: 2008-04-10 Created: 2008-04-10 Last updated: 2013-03-14Bibliographically approved

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Johnels, DanEdlund, Ulf
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