期刊
MATERIALS LETTERS
卷 106, 期 -, 页码 71-74出版社
ELSEVIER
DOI: 10.1016/j.matlet.2013.05.009
关键词
Sol-gel preparation; Nanoparticles; Titania nanotubes; Self-assembly; Asymmetric catalysis
资金
- Natural Science Foundation of Jiangsu Province [BK2011354]
- Priority Academic Program Development of Jiangsu High Education Institutions (PAPD)
- Program for Scientific Innovation Research of College Graduate in Jiangsu Province [CXZZ11_0092]
- National Natural Science Foundation of China [21104053, 21071103, 21074086]
Two trans-1,2-diaminocyclohexane-derived chiral cationic gelators were synthesized, each of which could self-assemble into ribbons in n-propanol. Titania tubes resembling the letter 'C' and the numeral '8' in the nano- and micro-size range were prepared using the self-assemblies of the gelators as the templates through a sol-gel transcription approach. Field emission electron microscopy images indicated the C- and 8-shaped titania tubes were formed by the adsorption of titania nanoparticles on the edges of the organic nanoribbons. The titania tubes were found to be applicable as asymmetric catalysts. We infer that gelator chirality is imparted on the titania surface at the angstrom level. (C) 2013 Elsevier B.V. All rights reserved.
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