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Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor

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Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor

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dc.contributor.author Zhao, Yanli
dc.contributor.author Aprahamian, Ivan
dc.contributor.author Trabolsi, Ali
dc.contributor.author Erina, Natalia
dc.contributor.author Stoddart, J. Fraser
dc.date.accessioned 2011-09-13T02:56:37Z
dc.date.available 2011-09-13T02:56:37Z
dc.date.copyright 2008
dc.date.issued 2011-09-13
dc.identifier.citation Zhao, Y. L., Aprahamian, I., Trabolsi, A., Erina, N., & Stoddart, J. F. (2008). Organogel Formation by a Cholesterol-Stoppered Bistable [2]Rotaxane and Its Dumbbell Precursor. Journal of the American Chemical Society, 130(20), 6348-6350.
dc.identifier.issn 0002-7863
dc.identifier.uri http://hdl.handle.net/10220/7040
dc.description.abstract The switching properties, gelation behavior, and self-organization of a cholesterol-stoppered bistable [2]rotaxane containing a cyclobis(paraquat-p-phenylene) ring and tetrathiafulvalene/1,5-dioxynaphthalene recognition units situated in the rod portion of the dumbbell component have been investigated by electrochemical, spectroscopic, and microscopic means. The cyclobis(paraquat-p-phenylene) ring in the [2]rotaxane can be switched between the tetrathiafulvalene and 1,5-dioxynaphthalene recognition units by addressing the redox properties of the tetrathiafulvalene unit. The organogels can be prepared by dissolving the [2]rotaxane and its dumbbell precursor in a CH2Cl2/MeOH (3:2) mixed solvent and liquified by adding the oxidant Fe(ClO4)3. Direct evidence for the self-organization was obtained from AFM investigations which have shown that both of the [2]rotaxane and its dumbbell precursor form linear superstructures which we propose are helical in nature.
dc.format.extent 3 p.
dc.language.iso en
dc.relation.ispartofseries Journal of the American chemical society
dc.rights © 2008 American Chemical Society
dc.subject DRNTU::Science::Biological sciences::Biochemistry.
dc.title Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor
dc.type Journal Article
dc.contributor.school School of Physical and Mathematical Sciences
dc.identifier.doi http://dx.doi.org/10.1021/ja800731k
dc.identifier.rims 159734

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