Premium
Inner Surface Chirality of Single‐Handed Twisted Carbonaceous Tubular Nanoribbons
Author(s) -
Liu Dan,
Li Baozong,
Guo Yongmin,
Li Yi,
Yang Yonggang
Publication year - 2015
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.22496
Subject(s) - chemistry , chirality (physics) , raman spectroscopy , biphenylene , crystallography , circular dichroism , supramolecular chemistry , nanotechnology , organic chemistry , crystal structure , materials science , physics , chiral symmetry breaking , phenylene , quantum mechanics , nambu–jona lasinio model , optics , quark , polymer
Single‐handed twisted 4,4′‐biphenylene‐bridged polybissilsesquioxane tubular nanoribbons and single‐layered nanoribbons were prepared by tuning the water/ethanol volume ratio in the reaction mixture at pH = 11.6 through a supramolecular templating approach. The single‐layered nanoribbons were formed by shrinking tubular nanoribbons after the removal of the templates. In addition, solvent‐induced handedness inversion was achieved. The handedness of the polybissilsesquioxanes could be controlled by changing the ethanol/water volume ratio in the reaction mixture. After carbonization at 900 °C for 4.0 h and removal of silica, single‐handed twisted carbonaceous tubular nanoribbons and single‐layered nanoribbons with micropores in the walls were obtained. X‐ray diffraction and Raman spectroscopy analyses indicated that the carbon is predominantly amorphous. The circular dichroism spectra show that the twisted tubular nanoribbons exhibit optical activity, while the twisted single‐layered nanoribbons do not. The results shown here indicate that chirality is transferred from the organic self‐assemblies to the inner surfaces of the 4,4′‐biphenylene‐bridged polybissilsesquioxane tubular nanoribbons and subsequently to those of the carbonaceous tubular nanoribbons. Chirality 27:809–815, 2015 . © 2015 Wiley Periodicals, Inc.