DUCROT, Aurélien; VERWILST, Peter; SCARPANTONIO, Luca; GOUDET, Sébastien; KAUFFMANN, Brice; DENISOV, Sergey A.; JONUSAUSKAS, Gediminas; MCCLENAGHAN, Nathan

doi:10.1080/10610278.2012.678851

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Licencia de uso del documento

http://creativecommons.org/licenses/by-nc-sa/

DUCROT, Aurélien
Institut des Sciences Moléculaires [ISM]

VERWILST, Peter
Institut des Sciences Moléculaires [ISM]

SCARPANTONIO, Luca
Institut des Sciences Moléculaires [ISM]

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Article de revue

Este ítem está publicado en

Supramolecular Chemistry. 2012-07, vol. 24, n° 4, p. 462-472

Taylor & Francis: STM, Behavioural Science and Public Health Titles

Resumen en inglés

Photolariat development, as an extension to the family of synthetic photochromic crown ether receptors, or photocrowns, is reported. Incorporated additional chelating groups, namely two anisoles or thioanisoles, contribute in completing the metal ion coordination sphere with different affinities and selectivities for a range of ions. Single-crystal X-ray diffraction analysis suggests that the thermally stable trans-form of the receptor is unsuitable for ion binding, consistent with spectrophotometric and NMR titration results, which is largely improved in the cis-form as the basis for the photocontrolled ion coordination/ejection. In terms of the azobenzene-containing receptor photochemistry, a photostationary state highly enriched in the cis-form (94:6, cis-/trans-) is reached, with slow thermal return (1.1-1.4 × 10− 5 s− 1) in the dark, which can undergo multiple cycles without discernable photodegradation.< Leer menos

Palabras clave en inglés

receptor

macrocycles

photochromism

photolariat

azobenzene

DOI

http://dx.doi.org/10.1080/10610278.2012.678851

Proyecto europeo

Communication between Functional Molecules using Photocontrolled Ions

Orígen

Importado de Hal

Centros de investigación

Laboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798