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Handedness Inversion of Chiral Amphiphilic Molecular Assemblies Evidenced by Supramolecular Chiral Imprinting in Mesoporous Silica Assemblies
Author(s) -
Xie Junjie,
Qiu Huibin,
Che Shunai
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201102146
Subject(s) - supramolecular chemistry , supramolecular chirality , amphiphile , mesoporous silica , materials science , molecular imprinting , imprinting (psychology) , mesoporous material , nanotechnology , inversion (geology) , chemical engineering , organic chemistry , chemistry , molecule , copolymer , polymer , geology , selectivity , catalysis , biochemistry , composite material , paleontology , engineering , structural basin , gene
Antipodal twisted helical ribbons with lamellar bilayer structure were obtained by self‐assembly of chiral amphiphilic molecules in water and water/ethanol. The handedness inversion of the molecular arrangement in these antipodal helical ribbons was investigated by using chiroptical spectroscopy and molecular probes in their antipodal mesoporous silica assemblies synthesized through pairing interaction between the head group of the chiral amphiphilic molecules and a co‐structure‐directing agent. The supramolecular chirality is imprinted in the pore surface through the organic group of the co‐structure‐directing agent. The mirror‐image diffuse‐reflectance circular dichroism spectra of the conjugated discotic probing molecule introduced into their supramolecular chiral imprinted mesoporous silica demonstrated the origin of inverse chirality from the antipodal helical stacking of the molecules.