Marfin Yuriy S, Banakova Elizaveta A, Merkushev Dmitry A, Usoltsev Sergey D, Churakov Andrei V
Department of Inorganic Chemistry, Ivanovo State University of Chemistry and Technology, Sheremetevsky avenue, 7, Ivanovo region Ivanovo, Russian Federation, 153000.
Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninsky prospect, 31, Moscow, Russian Federation, 119991.
J Fluoresc. 2020 Dec;30(6):1611-1621. doi: 10.1007/s10895-020-02622-y. Epub 2020 Sep 23.
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.
尽管在理解染料聚集方面取得了显著进展，但仍有一些过程需要进一步探索，并且这些过程会对聚集产生重大影响。在这项工作中表明，染料的聚集不仅受染料浓度影响，还受溶剂极性影响。研究发现，荧光峰的性质、位置和数量可通过同时改变水的比例和染料浓度来控制。这种效应在分子转子中最为明显，其聚集体的几何形状可能根据聚集程度稳定在不同的独立状态。浓度效应在染料聚集中起着重要作用，在新的研究中应予以考虑，以防止误解或在分子传感或荧光颜色微调领域获得新结果。本文结合染料结构预组织，讨论了聚集引起的光谱变化，将其作为微调实际有价值光谱特性的策略。
