The Interaction Of Homodimer Styrylcyanine Dyes With Sodium Dodecyl Sulfate And Triton X-100.

IF 2.6 4区 化学 Q2 BIOCHEMICAL RESEARCH METHODS Journal of Fluorescence Pub Date : 2024-09-28 DOI:10.1007/s10895-024-03921-4
Eldar N Kurtaliev, Akmal Sh Yarmukhamedov, Asalya A Djamalova, Negmat Nizomov, Sergei N Terekhov
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Abstract

Solubilization of the styrylcyanine dye Sbt ((E)-2-(4-(dimethylamino)styryl)-3-methylbenzo[d]thiazol-3-ium iodide) and its homodimers Dbt-5 and Dbt-10 in aqueous solution of sodium dodecyl sulfate and Triton X-100 has been studied by steady state and picosecond time-resolved fluorescence spectroscopy. At low concentration of sodium dodecyl sulfate in solution, between Sbt, Dbt-5 dyes molecules and surfactant ion pairs are formed followed by the formation non-luminescent H-aggregates. The nature of the interaction between molecules of dyes and surfactants has been revealed. The binding constants Ks of the dyes to the surfactants, free energy changes (ΔG0), the number of dye molecules (n) included in a single micelle and photophysical parameters have been determined. The degree of solubilization of dyes in micellar solution of Triton X-100 is higher as compared to sodium dodecyl sulfate and depends on the molecular weight and size of both dye molecules and micelles.

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同二聚体苯乙烯基丙氨酸染料与十二烷基硫酸钠和 Triton X-100 的相互作用。
通过稳态和皮秒时间分辨荧光光谱法研究了苯乙烯基丙氨酸染料 Sbt((E)-2-(4-(二甲基氨基)苯乙烯基)-3-甲基苯并[d]噻唑-3-碘化鎓)及其同源二聚体 Dbt-5 和 Dbt-10 在十二烷基硫酸钠和 Triton X-100 水溶液中的溶解情况。在溶液中十二烷基硫酸钠浓度较低时,Sbt、Dbt-5 染料分子与表面活性剂离子对之间会形成不发光的 H-聚集体。染料分子与表面活性剂之间的相互作用性质已经揭示。测定了染料与表面活性剂的结合常数 Ks、自由能变化 (ΔG0)、单个胶束中包含的染料分子数 (n) 以及光物理参数。与十二烷基硫酸钠相比,染料在 Triton X-100 胶束溶液中的溶解度更高,这取决于染料分子和胶束的分子量和大小。
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来源期刊
Journal of Fluorescence
Journal of Fluorescence 化学-分析化学
CiteScore
4.60
自引率
7.40%
发文量
203
审稿时长
5.4 months
期刊介绍: Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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