Supramolecular aggregates of organic dyes through noncovalent interactions have attracted great interest because they exhibit collective optical and excitonic properties. We report the formation of spherulitic J-aggregates from the coassembly of lithocholic acid (LCA) and 3,3′-diethylthiacarbocyanine iodide (DiSC₂(3)) in ammonia solution. Each spherulite contains a core, which serves as a nucleus for the growth of radially oriented J-aggregate fibrils. We find that the growth of spherulitic J-aggregates exhibits a sigmoidal kinetic curve with an initial lag time, followed by a period of rapid growth and a finally slow approach to equilibrium.

中文翻译：

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由胆酸和花青染料的共组装形成球状J-聚集体

通过非共价相互作用的有机染料的超分子聚集体引起人们极大的兴趣，因为它们表现出集体的光学和激子性质。我们报告了从硫代胆酸（LCA）和3,3'-二乙基硫代卡巴多菁碘化物（DiSC ₂（3））在氨溶液中的共组装形成的球状J聚集体。每个球晶都包含一个核，该核充当径向取向的J聚集原纤维生长的核。我们发现球形J聚集体的生长表现出S型动力学曲线，其初始滞后时间紧随其后的是一段快速增长时期，最后是缓慢的平衡过程。