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A Dynamic and Responsive Host in Action: Light-Controlled Molecular Encapsulation.

ABSTRACT: The rational design of a flexible molecular box, oAzoBox⁴⁺ , incoporating both photochromic and supramolecular recognition motifs is described. We exploit the E↔Z photoisomerization properties of azobenzenes to alter the shape of the cavity of the macrocycle upon absorption of light. Imidazolium motifs are used as hydrogen-bonding donor components, allowing for sequestration of small molecule guests in acetonitrile. Upon E→Z photoisomerization of oAzoBox⁴⁺ the guest is expelled from the macrocyclic cavity.

SUBMITTER: Ryan ST

PROVIDER: S-EPMC5396292 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature

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A Dynamic and Responsive Host in Action: Light-Controlled Molecular Encapsulation.

Ryan Seán T J ST Del Barrio Jesús J Suardíaz Reynier R Ryan Daniel F DF Rosta Edina E Scherman Oren A OA

Angewandte Chemie (International ed. in English) 20161028 52

The rational design of a flexible molecular box, oAzoBox<sup>4+</sup> , incoporating both photochromic and supramolecular recognition motifs is described. We exploit the E↔Z photoisomerization properties of azobenzenes to alter the shape of the cavity of the macrocycle upon absorption of light. Imidazolium motifs are used as hydrogen-bonding donor components, allowing for sequestration of small molecule guests in acetonitrile. Upon E→Z photoisomerization of oAzoBox<sup>4+</sup> the guest is expe ...[more]

PMID: 27791303

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