Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, UK.
B23 Beamline, Diamond Light Source, Didcot OX11 0DE, UK.
Molecules. 2023 Feb 4;28(4):1523. doi: 10.3390/molecules28041523.
Cyanine dyes are known to form - and -aggregates in aqueous solutions. Here we show that the cyanine dye, S0271, assembles in water into vortex induced chiral -aggregates. The chirality of the -aggregates depends on the directionality of the vortex. This study utilised both conventional benchtop CD spectropolarimeters and Mueller matrix polarimetry. It was found that -aggregates have real chirality alongside linear dichroism and linear and circular birefringence. We identify the factors that are key to the formation of metastable chiral -aggregates and propose a mechanism for their assembly.
花菁染料在水溶液中已知会形成聚集体。在这里，我们展示了花菁染料 S0271 在水中组装成涡旋诱导手性聚集体。聚集体的手性取决于涡旋的方向。本研究同时利用了常规台式 CD 光谱偏振计和 Mueller 矩阵偏振计。结果发现，聚集体具有真实的手性，以及线二色性和线偏光和圆偏光双折射。我们确定了形成亚稳手性聚集体的关键因素，并提出了它们组装的机制。
