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首页> 外文期刊>The journal of physical chemistry, B. Condensed matter, materials, surfaces, interfaces & biophysical >Solvent-Induced Organization of Squaraine Dyes in Solution Capillary Layers and Adsorbed Films
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Solvent-Induced Organization of Squaraine Dyes in Solution Capillary Layers and Adsorbed Films

机译：溶剂诱导的溶液中毛细管层和吸附膜中的方形染料的组织

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摘要

Unusual behavior of indolenine and hydroxyphenyl squaraines has been observed in solution capillary layers and adsorbed films.The confined solutions showed anomalous aggregation of squaraine molecules in contrast to their monomer behavior in the bulk solutions of the same concentration,along with formation of a macroscopic cell-like structure in the confined solution layer,with the diameter of cells being 3-5mum.The aggregate structure,as observed through electronic absorption spectra,was strongly dependent on the chemical structure of squaraine used and solvent used,and it also was different from squaraine aggregates observed in aqueous solutions and films prepared by vacuum evaporation.It has been found that indolenine squaraine is capable of forming H-aggregates in confined dimethylformamide solutions and hydroxyphenyl squaraine is capable of forming J-aggregates in confined dimethylformamide solutions and adsorbed films.The results were compared with pseudoisocyanine,which forms J-aggregates in aqueous bulk solutions readily;however,no J-aggregates have been found in their capillary layers.The interplay of dye-dye,dye-surface,and dye-solvent interactions resulting in the above effects is discussed.
机译：在溶液毛细管层和吸附膜中观察到了吲哚烯和羟苯基方胺的异常行为。与相同浓度的本体溶液相比，密闭溶液显示方酸分子的异常聚集，而不是它们的单体行为。在密闭溶液层中呈类似的结构，泡孔直径为3-5μm。通过电子吸收光谱观察到的聚集体结构强烈依赖于方酸的化学结构和所使用的溶剂，并且与方酸不同在真空蒸发制得的水溶液和薄膜中观察到聚集体，已发现吲哚肾上腺素可在受限的二甲基甲酰胺溶液中形成H聚集体，羟苯基方酸可在受限的二甲基甲酰胺溶液和吸附的膜中形成J聚集体。与假异花青素比较，后者形成J-聚集体很容易在水溶液中聚集;但是，在它们的毛细管层中没有发现J聚集体。讨论了导致上述效果的染料，染料-表面和染料-溶剂相互作用的相互作用。

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