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Título: | Tightening or loosening a pH-sensitive double-lasso molecular machine readily synthesized from an ends-activated [c2]daisy chain |
Autor: | Romuald, C.; Ardá, Ana CSIC ORCID CVN; Clavel, Caroline; Jiménez-Barbero, Jesús CSIC ORCID; Coutrot, F. | Fecha de publicación: | 2012 | Editor: | Royal Society of Chemistry (UK) | Citación: | Chemical Science, 3 (6) : 1851-1857 (2012) | Resumen: | The ready synthesis of a new double-lasso molecular machine from an ends-activated [c2]daisy chain has been achieved. This original architecture consists of a unique double-lasso structure, where the two macrocycles can slide along the threaded pseudo-macrocycle upon variation of pH. The interlocked structure allows for two very different conformations: at low pH, it has a loose conformation with a big cavity. The interlocked molecule thus behaves like a controllable “jump rope”. After deprotonation, the molecule adopts a helical-type tightened conformation with a shrunken cavity. In this conformation, no jump rope movement is possible due to the tightened lasso | Descripción: | 7 páginas, 7 figuras, 2 esquemas -- PAGS nros. 1851-1857 | Versión del editor: | http://dx.doi.org/10.1039/C2SC20072D | URI: | http://hdl.handle.net/10261/60415 | DOI: | 10.1039/C2SC20072D | ISSN: | 2041-6520 | E-ISSN: | 2041-6539 |
Aparece en las colecciones: | (CIB) Artículos |
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