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Controlled Supramolecular Assembly of Helical Silica Nanotube-Graphene Hybrids for Chiral Transcription and Separation

Title
Controlled Supramolecular Assembly of Helical Silica Nanotube-Graphene Hybrids for Chiral Transcription and Separation
Author
Justyn Wayne Jaworski
Keywords
reduced graphene oxide; helical silica; chiral transcription; hybrid; nanotube; MESOPOROUS SILICA; CORE/SHELL NANOWIRES; OXIDE; DERIVATIVES; NANOPARTICLES; ENHANCEMENT; RECOGNITION; FRAMEWORKS; MOLECULES; COMPOSITE
Issue Date
2013-03
Publisher
AMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Citation
ACS NANO, 2013, 7(3), p.2595-2601
Abstract
Chiral templating and enantioselective separations are demonstrated on graphene surfaces as directed by encapsulated silica nanotubes. Electrostatic assembly of helical silica nanotubes within graphene sheets results in a hybrid material with the electrochemical properties of graphene and the capability for chiral recognition. Control of the silica nanotube helicity within the graphene hybrid provides a means for directed chiral templating of guest molecules on the outer graphene surface as revealed in the chiral transcription of N-1,N-3,N-5-tri(4-pyridinyl)cyclohexane-1,3,5-tricarboxamide as well as polyallylamine into supramolecular templated assemblies. Changing the helicity of the internal nanotube also provides control over enantiomer selectivity as demonstrated by the chiral separation of racemic mixtures of phenylalanine, tryptophan, and alanine derivatives.
URI
https://pubs.acs.org/doi/10.1021/nn306006shttp://hdl.handle.net/20.500.11754/49813
ISSN
1936-0851
DOI
10.1021/nn306006s
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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