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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >Photo-induced decolorization of dimethylmethylene blue with selenious acid: a novel method to examine selective monomer-dimer distribution of the dye in micelle
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Photo-induced decolorization of dimethylmethylene blue with selenious acid: a novel method to examine selective monomer-dimer distribution of the dye in micelle

机译：亚硒酸光诱导的二甲基亚甲基蓝脱色：一种检查胶束中染料选择性单体-二聚体分布的新方法

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In this report, selenious acid (H2SeO3) has been exploited to study the decolorization of a cationic dye, dimethylmethylene blue (DMMB) with UV-light. Micelles have effectively been employed as organized media to promote the rate of decolorization of the dye molecules. Micellar catalysis has been explained as a consequence of electrostatic, hydrophobic and charge transfer interactions. It has also been shown that strong charge transfer and electrostatic interaction lead to an appreciable enhancement of the reaction rate in micelle, whereas, weak hydrophobic interaction is of marginal importance. Existence of monomer-dimer equilibrium for the dye molecules under certain selective environments has been identified spectrophotometrically. Then the shift of dimer-monomer equilibrium of the dye has been successfully studied in aqueous and micellar environments exploiting photodecolorization process for the dye in solution. 'Salting-in' and 'salting-out' agents were introduced into the reaction mixture to examine the viability of the dye decolorization process for dye contaminated water samples. (c) 2004 Elsevier B.V. All rights reserved.
机译：在此报告中，已利用亚硒酸（H2SeO3）来研究阳离子染料二甲基亚甲基蓝（DMMB）在紫外光下的脱色。胶束已经有效地用作有组织的介质，以促进染料分子的脱色速率。由于静电，疏水和电荷转移相互作用，已经解释了胶束催化。还已经显示出强的电荷转移和静电相互作用导致胶束中反应速率的明显提高，而弱的疏水相互作用仅具有很小的重要性。分光光度法已确定在某些选择性环境下染料分子的单体二聚体平衡的存在。然后在水溶液和胶束环境中，利用溶液中染料的光脱色过程，成功地研究了染料的二聚体单体平衡的变化。将“渗入”和“渗出”试剂引入反应混合物中，以检查染料被污染的水样品的染料脱色过程的可行性。 （c）2004 Elsevier B.V.保留所有权利。

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