Sun Chao, Zhang Xueyan, Xie Yuyu, Zhou Yunlong, Gao Xiaoqing
Wenzhou Key Laboratory of Biophysics, Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, P. R. China.
J Phys Chem Lett. 2024 May 2;15(17):4679-4685. doi: 10.1021/acs.jpclett.4c01016. Epub 2024 Apr 24.
Determining the true or false chirality of a system is essential for the design of advanced chiral materials and for improving their applications. Typically, a magnetic field would cause false optical activity in the chiral material system, thus confusing the true chirality's influence. Here, we provide a simple way to uncover the true and false chirality in chiral ferrimagnetic nanoparticles (FNPs) by using the gel as a rigid frame. The remnant local magnetic field of the FNP gel can be easily adjusted by an external magnetic field or by controlling the concentration of the FNPs. Moreover, the potential application of the FNP gel is detected by induced magnetic circularly polarized luminescence. This work provides deep insight into the true and false chirality in magnetic nanosystems and offers a strategy to construct new optic elements with an adjustable local magnetic field.
确定一个系统的真手性或假手性对于先进手性材料的设计及其应用的改进至关重要。通常，磁场会在手性材料系统中引起假旋光性，从而混淆真手性的影响。在此，我们提供了一种简单的方法，通过使用凝胶作为刚性框架来揭示手性亚铁磁性纳米颗粒（FNP）中的真手性和假手性。FNP凝胶的剩余局部磁场可以通过外部磁场或通过控制FNP的浓度轻松调节。此外，通过诱导磁圆偏振发光检测了FNP凝胶的潜在应用。这项工作深入洞察了磁性纳米系统中的真手性和假手性，并提供了一种构建具有可调局部磁场的新型光学元件的策略。
