In our study, three gemini dicationic surfactants with different methylene group spacer (16-6-16, 16-5-16 and 16-4-16) have been synthesized and characterized in solution by ¹H NMR spectroscopic technique. The implications of gemini micellar solution on ninhydrin and metal amino acid complex ([Cu(II)-Trp]⁺) were performed by the means of single-beam UV–visible spectroscopy. The absorbance was noted at regular time intervals and values of rate constant (k_ψ) were determined by using a computer-based program. Synthesized surfactants proved as an efficient catalyst on the interaction of ninhydrin with metal amino acid complex as compared with conventional surfactant and aqueous systems. The required description regarding the implications of gemini dicationic surfactants are provided in the text in detail. The conductivity technique was applied in order to get critical micelle concentration (cmc) of geminis in the presence and absence of reactants. Catalytic results developed in gemini dicationic surfactant system were explained effectively by pseudo-phase model. Various thermodynamic quantities, viz., activation energy, E_a, activation enthalpy, ΔH^#, and activation entropy, ΔS^#, were obtained on interaction of ninhydrin with [Cu(II)-Trp]⁺ in gemini systems by applying Eyring equation. A detailed explanation about these evaluated parameters was also made.

在我们的研究中，合成了三种具有不同亚甲基间隔基的双子双离子表面活性剂（16-6-16、16-5-16和16-4-16），并通过¹ H NMR光谱技术在溶液中进行了表征。通过单束紫外-可见光谱研究了双子胶束溶液对茚三酮和金属氨基酸络合物（[Cu(II)-Trp] ⁺ ）的影响。定期记录吸光度，并使用基于计算机的程序确定速率常数 ( k _ψ ) 的值。与传统表面活性剂和水性体系相比，合成表面活性剂被证明是茚三酮与金属氨基酸络合物相互作用的有效催化剂。文中详细提供了有关 Gemini 双子表面活性剂含义的必要描述。应用电导率技术以获得在存在和不存在反应物的情况下双子的临界胶束浓度（cmc）。 Gemini双阳离子表面活性剂体系的催化结果可以通过伪相模型得到有效解释。应用 Eyring 获得了茚三酮与 [Cu(II)-Trp] ⁺在 Gemini 系统中相互作用的各种热力学量，即活化能E _a 、活化焓 Δ H ^#和活化熵 Δ S ^# 。方程。对这些评估参数也进行了详细的解释。