Vortex Flow‐controlled Circularly Polarized Luminescence of Achiral Pt(II) Complex Aggregates Assembled at the Air‐Water Interface
Vortex Flow‐controlled Circularly Polarized Luminescence of Achiral Pt(II) Complex Aggregates Assembled at the Air‐Water Interface
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DOI：
10.1002/smtd.202200936
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发表时间：
2022-10
期刊：
影响因子：
12.4
通讯作者：
Takatoshi Maeda;Taizo Mori;Masahiro Ikeshita;Shing Cho Ma;G. Muller;K. Ariga;T. Naota
中科院分区：
文献类型：
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作者：
Takatoshi Maeda;Taizo Mori;Masahiro Ikeshita;Shing Cho Ma;G. Muller;K. Ariga;T. Naota
圆偏振发光（CPL）已经被研究用于各种应用，通过控制特性，如手性和幅度。超分子手性已准备涡旋运动作为一种机械刺激，然而，CPL尚未被精确和可重复地控制。在这项工作中，第一次精确控制CPL的涡流条件下，在空气-水界面的报告。由带有十六烷基链的非手性反式双（水杨醛亚胺基）Pt（II）络合物组成的聚集体的超分子手性在空气-水界面处被涡流诱导和控制，而该络合物在非涡流条件下自然形成具有非手性性质的非手性无定形固体。Pt（II）络合物聚集体的CPL方向和大小（glum值）可以根据涡旋条件（包括旋转方向和流速）精确调节。在涡流速率增加时，也观察到涡流诱导的发射增强。
Circularly polarized luminescence (CPL) has been researched for various applications by control of characteristics such as chirality and magnitude. Supramolecular chirality has been prepared by vortex motion as a mechanical stimulus; however, CPL has yet to be controlled precisely and reproducibly. In this work, the first precise control of CPL under vortex flow conditions at an air‐water interface is reported. The supramolecular chirality of aggregates consisting of an achiral trans‐bis(salicylaldiminato)Pt(II) complex bearing hexadecyl chains is induced and controlled with vortex flow at the air‐water interface, whereas the complex naturally forms an achiral amorphous solid with non‐chiroptical properties under non‐vortex conditions. The CPL direction and magnitude (glum value) of the Pt(II) complex aggregates can be adjusted precisely according to the vortex conditions, including the rotatory direction and flow rate. Vortex‐flow‐induced emission enhancement is also observed upon an increase in the rate of the vortex flow.