On the origin of helical mesostructures

Yang, Sui, Zhao, Lingzhi, Yu, Chengzhong, Zhou, Xufeng, Tang, Jiawei, Yuan, Pei, Chen, Daoyong and Zhao, Dongyuan (2006) On the origin of helical mesostructures. Journal of the American Chemical Society, 128 32: 10460-10466. doi:10.1021/ja0619049


Author Yang, Sui
Zhao, Lingzhi
Yu, Chengzhong
Zhou, Xufeng
Tang, Jiawei
Yuan, Pei
Chen, Daoyong
Zhao, Dongyuan
Title On the origin of helical mesostructures
Journal name Journal of the American Chemical Society   Check publisher's open access policy
ISSN 0002-7863
1520-5126
1943-2984
Publication date 2006-08-16
Sub-type Article (original research)
DOI 10.1021/ja0619049
Volume 128
Issue 32
Start page 10460
End page 10466
Total pages 7
Place of publication Washington, DC, U.S.A.
Publisher American Chemical Society
Language eng
Formatted abstract
The investigation on the formation mechanism of helical structures and the synthesis of helical materials is attractive for scientists in different fields. Here we report the synthesis of helical mesoporous materials with chiral channels in the presence of achiral surfactants. More importantly, we suggest a simple and purely interfacial interaction mechanism to explain the spontaneous formation of helical mesostructures. Unlike the proposed model for the formation of helical molecular chains or surpramolecular packing based on the geometrically motivated model or the entropically driven model, the origin of the helical mesostructured materials may be attributed to a morphological transformation accompanied by a reduction in surface free energy. After the helical morphology is formed, the increase in bending energy together with the derivation from a perfect hexagonal mesostructure may limit the curvature of helices. Our model may be general and important in the designed synthesis of helical mesoporous materials.
Keyword Chemistry, Multidisciplinary
Mesoporous silica
Nanoparticles
Confinement
Copolymers
Mechanism
Design
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Australian Institute for Bioengineering and Nanotechnology Publications
 
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Created: Fri, 25 Jan 2008, 16:55:05 EST