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Hierarchical organization of spherical assembly with reversibly photocontrollable cross-links.
|Title||Hierarchical organization of spherical assembly with reversibly photocontrollable cross-links.|
|Publication Type||Journal Article|
|Year of Publication||2013|
|Authors||Li Z-Q, Zhang Y-M, Chen H-Z, Zhao J, Liu Y|
|Journal||The Journal of organic chemistry|
|Date Published||2013 May 17|
A ternary photocontrollable assembly was hierarchically constructed by the "orthogonal" host-guest interaction of different types of cyclodextrins toward the porphyrin and azobenzene. Spectroscopic titrations and microscopic investigations demonstrate that the inclusion complex of azobenzene modified water-soluble porphyrin (1) with phthalocyanine-grafted permethyl β-cyclodextrins (2) could be reversibly cross-linked to relatively larger nanospheres with naphthyl bridged bis(α-cyclodextrin)s (3). Moreover, the large-sized spheres (1·2·3) could be disassembled and switched to small-sized complex (1·2) upon the photoinduced isomerization of an azophenyl group.
|Alternate Journal||J. Org. Chem.|