Results 131 to 140 of about 1,333 (175)
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Journal of the American Chemical Society, 2001
The creation of molecular-scale photonic devices requires supramolecular logic elements.1-3 Although the study of supramolecular photochemistry is still in its infancy, it is clear that it offers much greater diversity than single-molecule systems. These components may permit access to complex photophysical processes, such as vectorial energy transfer,
M J, MacLachlan, A, Rose, T M, Swager
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The creation of molecular-scale photonic devices requires supramolecular logic elements.1-3 Although the study of supramolecular photochemistry is still in its infancy, it is clear that it offers much greater diversity than single-molecule systems. These components may permit access to complex photophysical processes, such as vectorial energy transfer,
M J, MacLachlan, A, Rose, T M, Swager
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Journal of the American Chemical Society, 2006
The synthesis of rotaxanes derived from the synthetic peptide macrocycles cyclo(l-ProGly)4 and cyclo(l-ProGly)5 and diammonium threads is described. [2]Rotaxanes are formed in good yields (56-63%), despite the disruption of internal amide-amide hydrogen bonding in the macrocycles.
David Leigh, Vincent Aucagne
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The synthesis of rotaxanes derived from the synthetic peptide macrocycles cyclo(l-ProGly)4 and cyclo(l-ProGly)5 and diammonium threads is described. [2]Rotaxanes are formed in good yields (56-63%), despite the disruption of internal amide-amide hydrogen bonding in the macrocycles.
David Leigh, Vincent Aucagne
exaly +3 more sources
2003
The synthesis, properties, and potential applications of rotaxane dendrimers, dendritic molecules containing rotaxane-like mechanical bonds to link their components are described. Rotaxane dendrimers are classified into three types depending on where rotaxane-like features are introduced - Type I, II, and III rotaxane dendrimers which incorporate ...
Lee, JW, Kim, K
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The synthesis, properties, and potential applications of rotaxane dendrimers, dendritic molecules containing rotaxane-like mechanical bonds to link their components are described. Rotaxane dendrimers are classified into three types depending on where rotaxane-like features are introduced - Type I, II, and III rotaxane dendrimers which incorporate ...
Lee, JW, Kim, K
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Chemical Society Reviews, 2010
As a hot topic in research, various rotaxanes continue to be constructed. This tutorial review focuses mainly on bright rotaxanes with functional properties, which have been developed in recent years: fluorescent rotaxanes, rotaxanes as logic gates and information storage devices, gelation of rotaxanes, rotaxanes on solid surfaces, sensory rotaxanes ...
He Tian, Xiang Ma
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As a hot topic in research, various rotaxanes continue to be constructed. This tutorial review focuses mainly on bright rotaxanes with functional properties, which have been developed in recent years: fluorescent rotaxanes, rotaxanes as logic gates and information storage devices, gelation of rotaxanes, rotaxanes on solid surfaces, sensory rotaxanes ...
He Tian, Xiang Ma
exaly +3 more sources
Amphiphilic Bistable Rotaxanes
Chemistry – A European Journal, 2003AbstractTwo molecular shuttles/switches—a slow one and a fast one—in the shape of amphiphilic, bistable [2]rotaxanes have been synthesized and characterized. Both [2]rotaxanes contain a hydrophobic, tetraarylmethane and a hydrophilic, dendritic stopper.
Jeppesen, J.O. +10 more
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Novel photoswitchable rotaxanes
Chem. Commun., 2007A photoresponsive rotaxane based on the photoheterolysis of an acridane unit which is at the same time a bulky end group has been developed.
Werner, Abraham +4 more
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Synthesis of ‘Impossible’ Rotaxanes
Chemistry - A European JournalAbstract‘Impossible’ rotaxanes, which are constituted by interlocked components without obvious binding motifs, have attracted the interest of the mechanically interlocked molecules (MIMs) community. Within the synthetic efforts reported in the last decades towards the preparation of MIMs, some innovative protocols for accessing ‘impossible’ rotaxanes ...
Adrian Saura-Sanmartin
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Organic Letters, 2013
The first example of an oriented handcuff rotaxane has been obtained by through-the-annulus threading of a double-calix[6]arene system with a bis-ammonium axle. The relative orientation of the two calix-wheels can be predefined by exploiting the "endo-alkyl rule" which controls the directionality of the threading of alkylbenzylammonium axles with ...
CIAO, ROBERTA +5 more
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The first example of an oriented handcuff rotaxane has been obtained by through-the-annulus threading of a double-calix[6]arene system with a bis-ammonium axle. The relative orientation of the two calix-wheels can be predefined by exploiting the "endo-alkyl rule" which controls the directionality of the threading of alkylbenzylammonium axles with ...
CIAO, ROBERTA +5 more
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A Rotaxane‐Based Switchable Organocatalyst
Angewandte Chemie, 2012Switch it on! The activity of an organocatalytic group incorporated within a rotaxane architecture can be controlled by switching the position of the macrocycle. The system was used to mediate the progress of the Michael addition of an aliphatic thiol to trans-cinnamaldehyde. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Blanco, Victor +4 more
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Recent progress on switchable rotaxanes
Chemical Society Reviews, 2006AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
He, Tian, Qiao-Chun, Wang
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