In this work, a series of alkanediyl-α,ω–type gemini micelles symbolized as 16-s-16 (s = spacer) was synthesized. Synthesized products were characterized by 1H NMR technique. By conductivity method, cmc of these surfactants was determined by measuring specific electrical conductivity at different concentrations. Alkanediyl-α,ω–type gemini micelles–catalyzed interaction between [Ni(II)-Trp]+ complex and ninhydrin has been studied with the help of spectrophotometric studies. The catalytic implication of gemini micelles on rate constant (kψ) in ninhydrin and [Ni(II)-Trp]+ has been explored and discussed at 343 K and pH 5.0. Catalyzing behavior obtained by geminis confirmed that they influenced the study remarkably over their monomeric conventional counterpart. Results were also suggested that small amount of geminis at concentration below cmc was sufficient to induce the reaction more than aqueous. Though, 16-4-16 is detected to catalyze the work more among geminis and follows the order at each concentration as: 16-4-16 > 16-5-16 > 16-6-16. This catalytic implication produced by gemini micelles can efficiently be deduced using pseudophase model for micellar activity. In addition, by varying temperatures, several thermodynamic quantities were evaluated. A lower enthalpy value, ΔH#, with significant negative entropy value, ΔS#, is acquired in geminis than aqueous system.

中文翻译：

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烷二基-α,ω-型双子胶束-催化茚三酮与[Ni(II)-Trp]+配合物的研究

在这项工作中，合成了一系列标记为 16-s-16（s = 间隔基）的链烷二基-α,ω 型双子胶束。合成产物通过1H NMR技术表征。通过电导率法，通过测量不同浓度下的比电导率来确定这些表面活性剂的cmc。已经在分光光度法研究的帮助下研究了烷二基-α,ω 型双子胶束催化的 [Ni(II)-Trp]+ 配合物和茚三酮之间的相互作用。Gemini 胶束对茚三酮和 [Ni(II)-Trp]+ 中速率常数 (kψ) 的催化作用已在 343 K 和 pH 5.0 下进行了探索和讨论。Geminis 获得的催化行为证实，与单体常规对应物相比，它们对研究的影响显着。结果还表明，浓度低于 cmc 的少量双子足以诱导反应，而不是水溶液。尽管如此，检测到 16-4-16 在双子座中催化工作更多，并且在每个浓度下遵循以下顺序：16-4-16 > 16-5-16 > 16-6-16。使用胶束活性的假相模型可以有效地推导出由双子胶束产生的这种催化意义。此外，通过改变温度，评估了几个热力学量。与水系统相比，geminis 中获得了较低的焓值 ΔH#，具有显着的负熵值 ΔS#。使用胶束活性的假相模型可以有效地推导出由双子胶束产生的这种催化意义。此外，通过改变温度，评估了几个热力学量。与水系统相比，geminis 中获得了较低的焓值 ΔH#，具有显着的负熵值 ΔS#。使用胶束活性的假相模型可以有效地推导出由双子胶束产生的这种催化意义。此外，通过改变温度，评估了几个热力学量。与水系统相比，geminis 中获得了较低的焓值 ΔH#，具有显着的负熵值 ΔS#。