Document Detail

Artificial Redox-Driven Directionally Controlled Switches as a Basis for Redox-Driven Molecular Motors.
MedLine Citation:
PMID:  23146097     Owner:  NLM     Status:  Publisher    
Significance: This review relates to artificial redox-driven molecular devices. The advantages of using very simple chemical building blocks for the bottom-up design of nano-leveled functional motors and the importance of the unidirectionality of a switching process for the development of redox-driven molecular motors are discussed. Furthermore, the crucial difference between artificial molecular switches and motors is explained. Recent Advances: This review discusses few selected examples of redox-driven devices exhibiting partially complex coupled movement sequences, which, however, due to the lack of an overall directionally controlled movement, are not able to perform mechanical work on a molecular scale. Recent examples for redox-driven devices with at least one directionally controlled switching process as well as the proof for the unidirectionality of the switching process are presented. Critical Issues: The challenge in designing directionally controlled switches is the fact that during the switching process a configuration (or conformation) must be changed reversibly. This crucial process can be a flip caused by the change of the coordination sphere of a metal ion, a rotation around a C-C single bond or around a C-C double bond. Future Directions: For future developments, we suggest designing artificial redox-based molecular motors in which the motion process of the presented directionally controlled switches are coupled with another switchable unit. The latter could also be switchable in a non-directed way.
Gebhard Haberhauer; Christina Tepper
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-12
Journal Detail:
Title:  Antioxidants & redox signaling     Volume:  -     ISSN:  1557-7716     ISO Abbreviation:  Antioxid. Redox Signal.     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100888899     Medline TA:  Antioxid Redox Signal     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Institut für Organische Chemie, Universität Duisburg-Essen, Universitätsstraße 7, Essen, Germany, 45117;
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