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Tunable Supramolecular Assembly and Photoswitchable Conversion of Cyclodextrin/Diphenylalanine‐Based 1D and 2D Nanostructures
Author(s) -
Sun HeLue,
Chen Yong,
Han Xu,
Liu Yu
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201612629
Subject(s) - azobenzene , supramolecular chemistry , nanosheet , isomerization , cyclodextrin , nanostructure , nanotube , nanotechnology , materials science , supramolecular chirality , supramolecular catalysis , self assembly , supramolecular assembly , photoisomerization , chemistry , combinatorial chemistry , crystallography , catalysis , molecule , organic chemistry , crystal structure , carbon nanotube
Abstract A photocontrolled, interconvertible supramolecular 2D‐nanosheet/1D‐nanotube system was constructed through the supramolecular assembly of adamantanyl‐modified diphenylalanine with azobenzene‐bridged bis(β‐cyclodextrin). The nanosheet exhibited a greater fluorescence enhancement effect than the nanotube. Significantly, these nanosheets and nanotubes could interconvert via the photocontrolled trans/cis isomerization of azobenzene linkers in bis(β‐cyclodextrin), and this photo‐switchable one‐dimensional/two‐dimensional morphological interconversion was reversible and recyclable. This enables convenient routes to highly ordered nanostructures with various morphologies and dimensions that can be controlled by external stimuli.