中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Arrangement, conformation, and mobility of surfactant molecules intercalated in montmorillonite prepared at different pillaring reagent concentrations as studied by solid-state NMR spectroscopy

文献类型:期刊论文

作者Wen, Xiaoyan; He, Hongping; Zhu, Jianxi; Jun, Yang; Ye, Chaohui; Deng, Feng
刊名JOURNAL OF COLLOID AND INTERFACE SCIENCE
出版日期2006-07-15
卷号299期号:2页码:754-760
关键词montmorillonite alkylammonium solid state NMR dynamics 2D WISE NMR
英文摘要The arrangement, conformation, and mobility of dodecyltrimethylammonium cations (DDTMA(+)) intercalated in montmorillonite prepared with different pillaring reagent concentrations have been studied by (13)C relaxation time measurement, cross-polarization dynamics, and two-dimensional proton wide-line separation (2D WISE) spectroscopy, as well as X-ray powder diffraction (XRD). We demonstrate that the arrangement of DDTMA+ and the mobility of various groups are different, depending on the pillaring concentration, but the conformations of alkyl chains are similar. XRD experiments illustrate that at three different pillaring concentrations (DDmt0.2, DDmt0.5, and DDmt1.O), the organic cations adopt a lateral-monolayer, lateral-monolayer, and pseudotrilayer arrangement, respectively. (13)C MAS NMR reveals that the alkyl chains at the three concentrations uniformly display a large amount of mixed trans and gauch conformation (disordered) and a small amount of trans conformation (ordered). (13)C spin-lattice relaxation time and (1)H-(13)C cross-polarization dynamics measurement, along with 2D WISE NMR experiments, indicate that the mobility is much different for various groups at a given concentration and for a given group at different concentrations. At each concentration N-methyl unusually possesses the highest mobility, even exceeding that of the terminal methyl; at different concentrations the N-methyl and terminal methyl in DDmt1.0 exhibit the highest mobility compared with the other two samples. (c) 2006 Elsevier Inc. All rights reserved.
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Physical
研究领域[WOS]Chemistry
关键词[WOS]LAYERED SILICATES ; MAS NMR ; C-13 ; CLAY ; INTERLAYER ; DYNAMICS ; NANOCOMPOSITES ; MONOLAYERS ; MICA
收录类别SCI
语种英语
WOS记录号WOS:000238294800033
公开日期2015-07-28
源URL[http://ir.wipm.ac.cn/handle/112942/4622]  
专题武汉物理与数学研究所_2011年以前论文发表(包括2011年)
作者单位1.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
推荐引用方式
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Wen, Xiaoyan,He, Hongping,Zhu, Jianxi,et al. Arrangement, conformation, and mobility of surfactant molecules intercalated in montmorillonite prepared at different pillaring reagent concentrations as studied by solid-state NMR spectroscopy[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2006,299(2):754-760.
APA Wen, Xiaoyan,He, Hongping,Zhu, Jianxi,Jun, Yang,Ye, Chaohui,&Deng, Feng.(2006).Arrangement, conformation, and mobility of surfactant molecules intercalated in montmorillonite prepared at different pillaring reagent concentrations as studied by solid-state NMR spectroscopy.JOURNAL OF COLLOID AND INTERFACE SCIENCE,299(2),754-760.
MLA Wen, Xiaoyan,et al."Arrangement, conformation, and mobility of surfactant molecules intercalated in montmorillonite prepared at different pillaring reagent concentrations as studied by solid-state NMR spectroscopy".JOURNAL OF COLLOID AND INTERFACE SCIENCE 299.2(2006):754-760.

入库方式: OAI收割

来源:武汉物理与数学研究所

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