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题名: Phase transformation of the periodic mesoporous organosilicas assisted by organotrialkoxysilane
作者: Zhu, Guiru;  Yang, Qihua;  Zhong, Hua;  Jiang, Dongmei;  Li, Can
通讯作者: 杨启华 ;  李灿
刊名: JOURNAL OF PHYSICAL CHEMISTRY B
发表日期: 2007-07-19
DOI: 10.1021/jp071913j
卷: 111, 期:28, 页:8027-8033
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
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A phase transformation of mesoporous organosilicas from 2D-hexagonal P6mm to cubic Pm3n phase can be induced by the organotrialkoxysilane with hydrophilic pendant group with the aid of methanol during the co-condensation of 1,2-bis(trimethoxysilyl)ethane (BTME) and (EtO)(3)Si-R (R = L-prolinamide, trans-(1R,2R)-diaminocyclohexane, and gamma-aminopropyl) using the cationic surfactant, octadecyltrimethylammonium chloride (C(18)TMACl), as template in basic medium. Under similar synthesis conditions, no cubic Pm3n phase could be formed in the absence of (EtO)(3)Si-R. Depending on the type of the pendant group, different amounts of methanol were needed for the formation of the cubic Pm3n phase. N-[(triethoxysilyl)propyl]-L-prolinamide (M(L-Pro)) could easily induce the phase changing from 2D-hexagonal P6mm to cubic Pm3n phase probably because L-proline could result in a decreasing of the surfactant packing factor (g) through formation of large architecture on the outer boundary of the surfactant micelles. The organotrialkoxysilane can also help the formation of spherical morphology of the resultant materials.
关键词[WOS]: PERFORMANCE LIQUID-CHROMATOGRAPHY ;  CHANNEL WALLS ;  SILICA SPHERES ;  ORGANIC GROUPS ;  SURFACTANT ;  FRAMEWORK ;  PMOS ;  TRANS-(1R,2R)-DIAMINOCYCLOHEXANE ;  MESOPHASE ;  SYMMETRY
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000247966300016
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/98835
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:
Zhu, Guiru,Yang, Qihua,Zhong, Hua,et al. Phase transformation of the periodic mesoporous organosilicas assisted by organotrialkoxysilane[J]. JOURNAL OF PHYSICAL CHEMISTRY B,2007,111(28):8027-8033.
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