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Effects of Concentration on Aggregation of BODIPY-Based Fluorescent Dyes Solution.
Journal of Fluorescence ( IF 2.7 ) Pub Date : 2020-09-23 , DOI: 10.1007/s10895-020-02622-y
Yuriy S Marfin 1 , Elizaveta A Banakova 1 , Dmitry A Merkushev 1 , Sergey D Usoltsev 1 , Andrei V Churakov 2
Affiliation  

Despite significant progress in understanding of dye aggregation, there are still processes that need to be further explored and which can significantly affect aggregation. In this work it was shown that the aggregation of dyes is influenced not only by dye concentration, but also by solvent polarity. It was found that nature, positions and number of fluorescent peaks may be controlled by simultaneous varying of both water fraction and dye concentration. This effect is most pronounced for molecular rotors, which aggregates’ geometry may be stabilized in different separate states depending on the aggregation degree. The concentration effect plays a significant role in dye aggregation and should be considered in new studies in order to prevent misinterpretation or to obtain new results in fields of molecular sensing or fine-tuning of fluorescence color. In this paper aggregation caused spectral changes are discussed in line with the dye structure preorganization as the strategy for the fine tuning of practically valuable spectral characteristics.



中文翻译:

浓度对基于BODIPY的荧光染料溶液聚集的影响。

尽管在了解染料聚集方面取得了重大进展,但仍有一些过程需要进一步探索,并且可能会严重影响聚集。这项工作表明,染料的聚集不仅受染料浓度的影响,而且还受溶剂极性的影响。已经发现,荧光峰的性质,位置和数量可以通过同时改变水含量和染料浓度来控制。对于分子转子,这种效应最为明显,取决于聚集度,聚集体的几何形状可以稳定在不同的单独状态。浓度效应在染料聚集中起着重要作用,因此在新的研究中应考虑这种浓度效应,以防止误解或在分子传感或荧光色的微调领域获得新的结果。在本文中,根据染料结构的预组织,讨论了由聚集引起的光谱变化,作为对实际有用的光谱特征进行微调的策略。

更新日期:2020-09-23
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