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A Dynamic and Responsive Host in Action: Light‐Controlled Molecular Encapsulation
Author(s) -
Ryan Seán T. J.,
del Barrio Jesús,
Suardíaz Reynier,
Ryan Daniel F.,
Rosta Edina,
Scherman Oren A.
Publication year - 2016
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201607693
Subject(s) - photoisomerization , photochromism , supramolecular chemistry , chemistry , hydrogen bond , encapsulation (networking) , molecule , rational design , molecular recognition , photochemistry , silanes , acetonitrile , host–guest chemistry , isomerization , materials science , nanotechnology , organic chemistry , catalysis , computer science , silane , computer network
The rational design of a flexible molecular box, oAzoBox 4+ , 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 4+ the guest is expelled from the macrocyclic cavity.