A Better Understanding of the Formation of Silica Nanococoons

Silica nanococoons with coiled or concentric circular pore channels in the walls attracted much attention, recently. However, the formation of them is not well illustrated. Herein, hollow silica shells with organized pore channels parallel to the shell surface were prepared through a single-templati...

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Published inChinese journal of chemistry Vol. 29; no. 8; pp. 1595 - 1600
Main Author 许臻 赵环宇 闫卓君 王思兵 陈媛丽 李宝宗 李艺 杨永刚
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.08.2011
WILEY‐VCH Verlag
Wiley Subscription Services, Inc
Subjects
helicity
mesoporous
Microscopy
Silica
sol-gel processes
surfactants
X射线衍射
两亲分子
二氧化硅
低分子量
图像显示
场发射电子显微镜
稀释浓度
透射电子显微镜
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ISSN1001-604X
1614-7065
DOI10.1002/cjoc.201180286

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Summary:Silica nanococoons with coiled or concentric circular pore channels in the walls attracted much attention, recently. However, the formation of them is not well illustrated. Herein, hollow silica shells with organized pore channels parallel to the shell surface were prepared through a single-templating method using the self-assemblies of a chiral low-molecular-weight amphiphile, L-18Phe6PyBr, as templates under a dilute concentration. These nano- cocoons were characterized using X-ray diffractometer and N2 sorption. The formation of them was clearly shown in the field-emission electron microscopy images which were taken at a low voltage. Moreover, transmission elec- tron microscopy images taken after different reaction times indicated a cooperative self-assemble mechanism. It was also found that the nanocoons were formed from coiled nanoribbons.
Bibliography:31-1547/O6
Xu, Zhen Zhao, Huanyu Yan, Zhuojun Wang, Sibing Chen, Yuanli Li, Baozong Li, Yi Yang, Yonggang（ Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, Jiangsu 215123, China）
mesoporous, helicity, silica, surfactants, sol-gel processes
Silica nanococoons with coiled or concentric circular pore channels in the walls attracted much attention, recently. However, the formation of them is not well illustrated. Herein, hollow silica shells with organized pore channels parallel to the shell surface were prepared through a single-templating method using the self-assemblies of a chiral low-molecular-weight amphiphile, L-18Phe6PyBr, as templates under a dilute concentration. These nano- cocoons were characterized using X-ray diffractometer and N2 sorption. The formation of them was clearly shown in the field-emission electron microscopy images which were taken at a low voltage. Moreover, transmission elec- tron microscopy images taken after different reaction times indicated a cooperative self-assemble mechanism. It was also found that the nanocoons were formed from coiled nanoribbons.
istex:DEF8686DE118E982CE9338C32DE2B8599D6984AD
the National Natural Science Foundation of China - No. 20871087
Program for New Century Excellent Talents in University - No. NCET-08-0698
the Program of Innovative Research Team of Soochow University - No. 2
ark:/67375/WNG-CKDNMB57-1
ArticleID:CJOC201180286
the Jiangsu Planned Projects for Postdoctoral Research Funds - No. 0902027C
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201180286