NP-10与单链、双链季铵盐三种复配体系相互作用规律的NMR研究

doi:10.11938/cjmr20170103

波谱学杂志 ›› 2017, Vol. 34 ›› Issue (1): 16-24.doi: 10.11938/cjmr20170103

NP-10与单链、双链季铵盐三种复配体系相互作用规律的NMR研究

马二倩^1,2, 李永肖^1,2, 赵瑞格^1,2, 张占辉¹, 杨秋青²

1. 河北师范大学化学与材料科学学院, 河北石家庄 050024;
2. 河北师范大学分析测试中心, 河北石家庄 050024

收稿日期:2016-01-29 修回日期:2017-01-04 出版日期:2017-03-05 发布日期:2017-03-05
通讯作者: 杨秋青,Tel:0311-80786318,E-mail:qiuqingyang@sina.com E-mail:qiuqingyang@sina.com
基金资助:
国家自然科学基金资助项目（21272053）；河北师范大学自然科学基金资助项目（L2011Y09）

Interactions Between NP-10 and Single/Double Chain Quaternary Ammonium Salts Studied by NMR Spectroscopy

MA Er-qian^1,2, LI Yong-xiao^1,2, ZHAO Rui-ge^1,2, ZHANG Zhan-hui¹, YANG Qiu-qing²

1. College of Chemistry and Material Science, Hebei Normal University, Shijiazhuang 050024, China;
2. Analysis and Testing Center, Hebei Normal University, Shijiazhuang 050024, China

Received:2016-01-29 Revised:2017-01-04 Online:2017-03-05 Published:2017-03-05

摘要/Abstract

摘要： 通过核磁共振（NMR）技术研究了阳离子表面活性剂，包括单链（DTAC）和双链（C₁₂-C₄-C₁₂和C₁₂-C₈-C₁₂）氯化物季铵盐，与非离子表面活性剂壬基酚聚氧乙烯醚（NP-10）组成的3种复配体系的相互作用及作用点、排列方式、混合胶束中分子间与分子内作用的变化规律等.2D NOESY技术证明了这3种复配体系相互作用力大小顺序为NP-10/C₁₂-C₈-C₁₂ > NP-10/C₁₂-C₄-C₁₂ > NP-10/DTAC，它们的相互作用点相同但作用点数目不同.自扩散系数显示NP-10对混合胶束的动力学半径影响大于季铵盐.弛豫时间表明，当NP-10/DTAC和NP-10/C₁₂-C_s-C₁₂（s=4或8）的混合摩尔比分别为1：3和1：2时，复配体系中分子间的相互作用力开始减小，分子内作用开始起主导作用，这暗示它们最佳摩尔配比分别为1：3和1：2，空间距离也佐证了这一结论.

关键词: 相互作用, 壬基酚聚氧乙烯醚(NP-10), 单链、双链氯化物季铵盐, 核磁共振(NMR)

Abstract: NMR spectroscopy was used to study the behaviors of three binary surfactant micellar solutions, NP-10/DTAC, NP-10/C₁₂-C₄-C₁₂ and NP-10/C₁₂-C₈-C₁₂ respectively. Relative arrangement and the sites of interactions between the surfactant molecule pairs in the mixed micelles, as well as the differences in inter-/intra- molecular interactions were investigated. 2D NOESY experiments revealed that the number of sites of interaction varied across the different binary mixtures, and the degree of interactions increased in the following order:NP-10/C₁₂-C₈-C₁₂ > NP-10/C₁₂-C₄-C₁₂ > NP-10/DTAC. Self-diffusion coefficient experiments showed that the influence of NP-10 on the hydro-dynamic radius of the mixed micelles was greater than that of quaternary ammonium salts. Spin-spin relaxation time experiments indicated that, for NP-10/DTAC and NP-10/C₁₂-C_s-C₁₂ (s=4 or 8) binary systems, intra-molecular interactions dominated and inter-molecular interactions began to decrease at molar ratios 1:3 and 1:2. These points corresponded to the optimal molar ratio for synergic effects. Spatial distance measurements supported this result, confirmed that the optimal molar ratio was 1:3 and 1:2.

Key words: NMR, interaction, single chain double chain quaternary ammonium, NP-10

中图分类号:

O482.53

马二倩, 李永肖, 赵瑞格, 张占辉, 杨秋青. NP-10与单链、双链季铵盐三种复配体系相互作用规律的NMR研究[J]. 波谱学杂志, 2017, 34(1): 16-24.

MA Er-qian, LI Yong-xiao, ZHAO Rui-ge, ZHANG Zhan-hui, YANG Qiu-qing. Interactions Between NP-10 and Single/Double Chain Quaternary Ammonium Salts Studied by NMR Spectroscopy[J]. Chinese Journal of Magnetic Resonance, 2017, 34(1): 16-24.

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NP-10与单链、双链季铵盐三种复配体系相互作用规律的NMR研究

Interactions Between NP-10 and Single/Double Chain Quaternary Ammonium Salts Studied by NMR Spectroscopy

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