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题名: Organic-inorganic hybrid hollow nanospheres with microwindows on the shell
作者: Liu, Jian1, 2;  Yang, Qihua1;  Zhang, Lei1;  Yang, Hengquan1;  Gao, Jinsuo1, 2;  Li, Can1
通讯作者: 杨启华 ;  李灿
刊名: CHEMISTRY OF MATERIALS
发表日期: 2008-07-08
DOI: 10.1021/cm800192f
卷: 20, 期:13, 页:4268-4275
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 506,503
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: We demonstrate, for the first time, that organic-inorganic hybrid hollow nanospheres with controllable size (12-20 nm) and shell thickness (4-7 nm) can be successfully synthesized through the condensation of 1,2-bis(trimethoxysilyl)ethane (BTME) around an inorganic-electrolyte-stabilized F127 micelle under a mild buffer condition (NaH2PO4-Na2HPO4, pH similar to 7.0). The hollow spheres feature microwindows with pore size about 0.5-1.2 nm on the shell, which allow the guest molecules to diffuse into the hollow cavities. It was found that the concentration of the buffer solution in the synthesis was crucial to the formation of hollow nanosphere. At a low buffer concentration (20-100 mM), the surfactant exists as individual micelle. A core/shell nanocomposite was formed by the deposition of BTME at the corona of individual micelle, which leads to the formation of organic-inorganic hybrid nanoparticles with hollow interior after the extraction of the surfactant. The aggregation of individual micelles was observed at higher buffer concentration (>200 mM), which favors the formation of irregularly shaped particles with ordered mesostructure. This work presents a novel and facile strategy to fabricate hollow nanospheres with microwindows, which provides a versatile platform for practical applications of organic-inorganic hybrid materials in a broad range of fields such as catalysis, encapsulation, and drug delivery, etc.
关键词[WOS]: PERIODIC MESOPOROUS ORGANOSILICAS ;  SILICA NANOSPHERES ;  BRIDGED POLYSILSESQUIOXANES ;  TRIBLOCK COPOLYMERS ;  CONTROLLED-RELEASE ;  AQUEOUS-SOLUTIONS ;  IN-SITU ;  NANOPARTICLES ;  SURFACTANT ;  SOLIDS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000257279200018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100167
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

Recommended Citation:
Liu, Jian,Yang, Qihua,Zhang, Lei,et al. Organic-inorganic hybrid hollow nanospheres with microwindows on the shell[J]. CHEMISTRY OF MATERIALS,2008,20(13):4268-4275.
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