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Title: Organogel formation by a cholesterol-stoppered bistable [2]rotaxane and its dumbbell precursor
Authors: Zhao, Yanli
Aprahamian, Ivan
Trabolsi, Ali
Erina, Natalia
Stoddart, J. Fraser
Keywords: DRNTU::Science::Biological sciences::Biochemistry
Issue Date: 2008
Source: 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.
Series/Report no.: Journal of the American chemical society
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.
ISSN: 0002-7863
DOI: 10.1021/ja800731k
Rights: © 2008 American Chemical Society
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SPMS Journal Articles

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