Induction and control of supramolecular chirality by light in self-assembled helical nanostructures

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Evolution of supramolecular chirality from self-assembly of achiral compounds and control over its handedness is closely related to the evolution of life and development of supramolecular materials with desired handedness. Here we report a system where the entire process of induction, control and locking of supramolecular chirality can be manipulated by light. Combination of triphenylamine and diacetylene moieties in the molecular structure allows photoinduced self-assembly of the molecule into helical aggregates in a chlorinated solvent by visible light and covalent fixation of the aggregate via photopolymerization by ultraviolet light, respectively. By using visible circularly polarized light, the supramolecular chirality of the resulting aggregates is selectively and reversibly controlled by its rotational direction, and the desired supramolecular chirality can be arrested by irradiation with ultraviolet circularly polarized light. This methodology opens a route to ward the formation of supramolecular chiral conducting nanostructures from the self-assembly of achiral molecules.
Publisher
NATURE PUBLISHING GROUP
Issue Date
2015-04
Language
English
Article Type
Article
Keywords

CIRCULARLY-POLARIZED LIGHT; HYBRID DENSITY FUNCTIONALS; ENANTIOMERIC EXCESS; COLUMNAR STACKS; VISIBLE-LIGHT; ORGANIC GELS; AMPLIFICATION; POLYMER; DIACETYLENE; MOLECULES

Citation

NATURE COMMUNICATIONS, v.6

ISSN
2041-1723
DOI
10.1038/ncomms7959
URI
http://hdl.handle.net/10203/198760
Appears in Collection
EE-Journal Papers(저널논문)CH-Journal Papers(저널논문)NT-Journal Papers(저널논문)
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