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题名: Thioether-bridged mesoporous organosilicas: Mesophase transformations induced by the bridged organosilane precursor
作者: Liu, Jian;  Yang, Qihua;  Zhang, Lei;  Jiang, Dongmei;  Shi, Xin;  Yang, Jie;  Zhong, Hua;  Li, Can
通讯作者: 杨启华 ;  李灿
刊名: ADVANCED FUNCTIONAL MATERIALS
发表日期: 2007-03-05
DOI: 10.1002/adfm.200600379
卷: 17, 期:4, 页:569-576
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, Multidisciplinary ;  Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary ;  Physics, Applied ;  Physics, Condensed Matter
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science ;  Physics
英文摘要: The achievement of structural control over thioether-bridged mesoporous organosilicas is reported. The mesoporous materials have been synthesized by co-condensation of bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPTS) and tetramethoxysilane (TMOS) in acetic acid/sodium acetate buffer solution (HAc-NaAc, pH 4.4), using the nonionic surfactant P123 as a template. The mesostructure of the material is mainly controlled by the molar ratio of TESPTS/TMOS in the initial gel mixture. A mesophase transformation, progressing from a highly ordered 2D hexagonal structure via a vesiclelike structure to a mesostructured cellular foam, can be clearly observed when the molar ratio of TESPTS/TMOS is increased in increments. Solid-state NMR results show that TESPTS is not completely hydrolyzed and condensed at the applied buffer conditions. At low concentrations, the unhydrolyzed TESPTS can penetrate into the core of the surfactant micelles and change the packing parameter of the P123 surfactant. Above a certain concentration, the TESPTS can form a microemulsion with P123 surfactant molecules. Therefore, the vesiclelike structure or cellular foam structure can be synthesized by simply controlling the molar ratio of TESPTS/TMOS. This approach provides a novel method for the facile synthesis of organic-inorganic hybrid materials with a controllable mesostructure under mild synthetic conditions.
关键词[WOS]: MESOSTRUCTURED SILICA VESICLES ;  MOLECULAR-SIEVES ;  COPOLYMER SYNTHESIS ;  INORGANIC SALTS ;  ORGANIC GROUPS ;  CHANNEL WALLS ;  CRYSTAL ;  TEMPLATES ;  MECHANISM ;  SBA-15
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000245054900009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98829
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

Recommended Citation:
Liu, Jian,Yang, Qihua,Zhang, Lei,et al. Thioether-bridged mesoporous organosilicas: Mesophase transformations induced by the bridged organosilane precursor[J]. ADVANCED FUNCTIONAL MATERIALS,2007,17(4):569-576.
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