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 GB/T 7714 | 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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