{"title":"有机添加剂或反离子对两亲体超分子组装结构的影响。小角中子散射研究","authors":"Toyoko Imae, Minoru Kakitani, Motohisa Kato, Michihiro Furusaka","doi":"10.1021/jp962127+","DOIUrl":null,"url":null,"abstract":"<p >Small-angle neutron scattering (SANS) was measured for aqueous solutions of amphiphiles with organic additives or counterions such as 2-indenecarboxylic acid, cinnamic acid, and salicylic acid or their ions. The effect of organic species on the supramolecular assembly structure was investigated. Equimolar mixtures of dodecyldimethylamine oxides and aromatic carboxylic acids constructed vesicles. The vesicular bilayer thicknesses were 29?30 ?, independent of organic species. On the other hand, hexadecyltrimethylammoniums with aromatic carboxylate counterions always formed rodlike micelles with axial ratios 8?10. Aqueous solutions of tetradecyltrimethylammonium salicylate displayed a strong interparticle interference effect on SANS profiles at concentrations above 0.8 × 10<sup>-2</sup> g cm<sup>-3</sup>, although such an effect disappeared with addition of more than 5/mM sodium salicylate. </p>","PeriodicalId":58,"journal":{"name":"The Journal of Physical Chemistry ","volume":null,"pages":null},"PeriodicalIF":2.7810,"publicationDate":"1996-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1021/jp962127+","citationCount":"11","resultStr":"{\"title\":\"Effect of Organic Additives or Counterions on the Supramolecular Assembly Structures Constructed by Amphiphiles. A Small-Angle Neutron Scattering Investigation\",\"authors\":\"Toyoko Imae, Minoru Kakitani, Motohisa Kato, Michihiro Furusaka\",\"doi\":\"10.1021/jp962127+\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Small-angle neutron scattering (SANS) was measured for aqueous solutions of amphiphiles with organic additives or counterions such as 2-indenecarboxylic acid, cinnamic acid, and salicylic acid or their ions. The effect of organic species on the supramolecular assembly structure was investigated. Equimolar mixtures of dodecyldimethylamine oxides and aromatic carboxylic acids constructed vesicles. The vesicular bilayer thicknesses were 29?30 ?, independent of organic species. On the other hand, hexadecyltrimethylammoniums with aromatic carboxylate counterions always formed rodlike micelles with axial ratios 8?10. Aqueous solutions of tetradecyltrimethylammonium salicylate displayed a strong interparticle interference effect on SANS profiles at concentrations above 0.8 × 10<sup>-2</sup> g cm<sup>-3</sup>, although such an effect disappeared with addition of more than 5/mM sodium salicylate. </p>\",\"PeriodicalId\":58,\"journal\":{\"name\":\"The Journal of Physical Chemistry \",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.7810,\"publicationDate\":\"1996-12-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1021/jp962127+\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"The Journal of Physical Chemistry \",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/jp962127%2B\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Journal of Physical Chemistry ","FirstCategoryId":"1","ListUrlMain":"https://pubs.acs.org/doi/10.1021/jp962127%2B","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
摘要
测定了两亲体水溶液中含有2-独立羧酸、肉桂酸、水杨酸或其离子的小角中子散射(SANS)。研究了有机物质对超分子组装结构的影响。十二烷基二甲胺氧化物和芳香羧酸的等摩尔混合物构成了囊泡。囊泡双层厚度为29?30 ?，独立于有机物种。另一方面，十六烷基三甲基铵与芳香羧酸反离子形成轴比为8?10的棒状胶束。水杨酸四烷基三甲基铵水溶液在浓度大于0.8 × 10-2 g cm-3时对SANS谱表现出较强的粒子间干扰效应，但当水杨酸钠的加入量大于5/mM时，这种影响消失。
Effect of Organic Additives or Counterions on the Supramolecular Assembly Structures Constructed by Amphiphiles. A Small-Angle Neutron Scattering Investigation
Small-angle neutron scattering (SANS) was measured for aqueous solutions of amphiphiles with organic additives or counterions such as 2-indenecarboxylic acid, cinnamic acid, and salicylic acid or their ions. The effect of organic species on the supramolecular assembly structure was investigated. Equimolar mixtures of dodecyldimethylamine oxides and aromatic carboxylic acids constructed vesicles. The vesicular bilayer thicknesses were 29?30 ?, independent of organic species. On the other hand, hexadecyltrimethylammoniums with aromatic carboxylate counterions always formed rodlike micelles with axial ratios 8?10. Aqueous solutions of tetradecyltrimethylammonium salicylate displayed a strong interparticle interference effect on SANS profiles at concentrations above 0.8 × 10-2 g cm-3, although such an effect disappeared with addition of more than 5/mM sodium salicylate.
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