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Stimuli‐Responsive Resorcin[4]arene Cavitands: Toward Visible‐Light‐Activated Molecular Grippers

García‐López, Victor and Zalibera, Michal and Trapp, Nils and Kuss‐Petermann, Martin and Wenger, Oliver S. and Diederich, François. (2020) Stimuli‐Responsive Resorcin[4]arene Cavitands: Toward Visible‐Light‐Activated Molecular Grippers. Chemistry - A European Journal, 26 (50). pp. 11451-11461.

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Official URL: https://edoc.unibas.ch/78696/

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Abstract

Resorcin[4]arene cavitands, equipped with diverse quinone (Q) and [Ru(bpy)(2)dppz](2+)(bpy=2,2 '-bipyridine, dppz=dipyrido[3,2-a:2 ',3 '-c]phenazine) photosensitizing walls in different configurations, were synthesized. Upon visible-light irradiation at 420 nm, electron transfer from the [Ru(bpy)(2)dppz](2+)to theQgenerates the semiquinone (SQ) radical anion, triggering a large conformational switching from a flatkiteto avasewith a cavity for the encapsulation of small guests, such as cyclohexane and heteroalicyclic derivatives, in CD3CN. Depending on the molecular design, theSQradical anion can live for several minutes (approximate to 10 min) and thevasecan be generated in a secondary process without need for addition of a sacrificial electron donor to accumulate theSQstate. Switching can also be triggered by other stimuli, such as changes in solvent, host-guest complexation, and chemical and electrochemical processes. This comprehensive investigation benefits the development of stimuli-responsive nanodevices, such as light-activated molecular grippers.
Faculties and Departments:05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Wenger)
UniBasel Contributors:Wenger, Oliver and Kuss-Petermann, Martin
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley
ISSN:0947-6539
e-ISSN:1521-3765
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
edoc DOI:
Last Modified:07 Oct 2020 08:50
Deposited On:07 Oct 2020 08:50

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