STOICHIOMETRIC AND KINETIC STUDY OF ION ASSOCIATION INVOLVING SOLVATOCHROMISM AND ITS USE IN ANALYTICAL CHEMISTRY

涉及溶剂变色的离子缔合的化学计量和动力学研究及其在分析化学中的应用

• 批准号: 07454203
• 负责人: MOTOMIZU Shoji
• 金额: $ 4.74万
• 依托单位: OKAYAMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07454203/
• 关键词: ion association reaction; solvatochromism; ion association reagents; equilibrium analysis; spectrophotometry; capillary electrophoresis; hydrophobic interaction; hydrophobic ion association; 水溶液; キャピラリー電気泳動; イオン会合定数; アゾ系陰イオン試薬; トリフェニルメタン系陰イオン試

The present investigator found that some dye ions reacted with their pairing ions in an aqueous solution to form ion associates and to change the maximum absorption wavelengths and its absorption intensity. The change in absorption wavelength and intensity was found to be caused by "solvatochromism". Such solvatochromism has been studied in detail by using newly designed and synthesized dye ions. The solvatochromism, which was found a new-type phenomenon, was occurred on the basis of the change in the polarity of the micro-environment around the dye ions, when they reacted with hydrophobic pairing ions to form ion associates. By utilizing the color change reactions, the ion association reactions in aqueous solutions were studied stoichiometrically and kenetically. Ion association constants of various hydrophobic ion associates formed in aqueous solutions were first determined spectrophotometrically, as well as by a mobility change method using capillary elelctrophoresis and by a photom … More etric titration method. The ion association reactions with newly developed reagents were applied to the analysis of various ionic substances such as cationic, anionic and nonionic surfactants and phosphate and silicate coupled with the formation of heteropoly acids. The results obtained in this research are summarized as follows.1. Sysnthesis and developments of novel ion association reagents. Two types of reagents, which showed the shift of maximum absorption wavelength toward a shorter and a longer wavelengths in the presence of pairing ions, were developed.2. Determination of ion association constants in aqueous solutions. The constants of hydrophobic ion associates were determined by using the solvatochromism and the change in ionic mobility, and by analysing the photmetric titration curves. Thermodynamic study of ion association was carried out, which showed the entropy change involging ion association was very important.3. Analytical uses. The newly developed in association reagents were used for the spectrophotometric determination of ionic substances for flow injection analysis, for the detection in post column coloration, for photometric titration and for the separation and detection in capillary electrophoresis. Less

本研究者发现，某些染料离子在水溶液中与其配对离子反应形成离子缔合物，并改变其最大吸收波长和吸收强度。发现吸收波长和强度的变化是由“溶剂化变色”引起的。这种溶剂化变色已详细研究，通过使用新设计和合成的染料离子。溶剂化显色是染料离子与疏水配对离子反应形成离子缔合物时，其周围微环境极性发生变化而产生的一种新型现象。利用颜色变化反应，对水溶液中的离子缔合反应进行了化学计量和动力学研究。本文首次用毛细管电泳迁移率变化法和照相法测定了水溶液中形成的各种疏水缔合离子的缔合常数。 ...更多信息 滴定法应用新试剂的离子缔合反应分析了阳离子、阴离子和非离子表面活性剂、磷酸盐和硅酸盐等离子物质，并与杂多酸的形成进行了偶联。本研究取得的主要成果如下：1.新型离子缔合试剂的合成与发展。开发了两种试剂，在配对离子存在下，最大吸收波长向短波长和长波长移动.水溶液中离子缔合常数的测定。利用溶剂化显色性和离子迁移率的变化，通过分析光度滴定曲线，确定了疏水离子缔合物的常数。对离子缔合过程进行了热力学研究，发现离子缔合过程中的熵变是非常重要的.分析用途。新开发的缔合试剂用于流动注射分光光度法测定离子物质、柱后显色检测、光度滴定和毛细管电泳分离检测。少

项目成果

J.P.Susanto: "Adsorption-concentration of ion associate formed between molybdosilicate and malachite green on a miniature filter" Analyst(London). 120巻. 2605-2611 (1995)

J.P.Susanto：“微型过滤器上钼硅酸盐和孔雀石绿之间形成的离子缔合物的吸附浓缩”Analyst（伦敦）120。2605-2611（1995）。

Y.Gao, S.Motomizu et al.: "Flow-injection spectrophotometric determination of magnesium with Xylylazo Violet I" J.Flow Injection Anal.12. 77-84 (1995)

Y.Gao、S.Motomizu 等人：“使用 Xylylazo Violet I 进行流动注射分光光度法测定镁”J.Flow Injection Anal.12。

J.P.Susanto: "Adsorption-concentration of ion associate formed between molybdosilicate and malachite green on a miniature filter" Analyst (London). 120. 2605-2611 (1995)

J.P.Susanto：“在微型过滤器上钼硅酸盐和孔雀石绿之间形成的离子缔合物的吸附浓缩”分析师（伦敦）。

S.Motomizu et al.: "Electrical conductivity detection/ion chromatography using a suppressor method based on ion association/micelle extraction" Bunseki Kagaku. 44. 1041-1048 (1995)

S.Motomizu 等人：“使用基于离子缔合/胶束提取的抑制器方法进行电导率检测/离子色谱”Bunseki Kagaku。

T.Takayanagi, S.Motomizu et al.: "Separation and direct photometric determination of inorganic anions by capillary zone electrophoresis using suppressed electroosmosis." Anal.Sci.12. 575-579 (1996)

T.Takayanagi、S.Motomizu 等人：“利用抑制电渗通过毛细管区带电泳分离和直接光度测定无机阴离子。”