文献类型：期刊文献

英文题名：Scale effect of circularly polarized luminescent signal of matter

作者：Sun, Siyu[1];Li, Xiaolin[2];Xu, Chen[1];Li, Yan[1];Wu, YongZhen[1];Feringa, Ben L.[1,3,4];Tian, He[1];Ma, Xiang[1]

机构：[1]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Key Lab Adv Mat & Feringa Nobe, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[3]Univ Groningen, Stratingh Inst Chem, Fac Sci & Engn, NL-9747 AG Groningen, Netherlands;[4]Univ Groningen, Zernike Inst Adv Mat, Fac Sci & Engn, NL-9747 AG Groningen, Netherlands

年份：2023

卷号：10

期号：5

外文期刊名：NATIONAL SCIENCE REVIEW

收录：;EI(收录号：20232514260890);WOS:【SCI-EXPANDED(收录号:WOS:001002759200002)】；

语种：英文

外文关键词：scale effect; circularly polarized luminescent; chirality; quantum dots; perovskite

摘要：A scale-effect model based on scalar theory can help understand the CPL signal, and measurement entropy of CPL detection may determine the isotropy and anisotropy of the CPL signal. Circularly polarized luminescence (CPL) is an important part in the research of modern luminescent materials and photoelectric devices. Usually, chiral molecules or chiral structures are the key factors to induce CPL spontaneous emission. In this study, a scale-effect model based on scalar theory was proposed to better understand the CPL signal of luminescent materials. Besides chiral structures being able to induce CPL, achiral ordered structures can also have a significant influence on CPL signals. These achiral structures are mainly reflected in the particle scale in micro-order or macro-order, i.e. the CPL signal measured under most conditions depends on the scale of the ordered medium, and does not reflect the inherent chirality of the excited state of the luminescent molecule. This kind of influence is difficult to be eliminated by simple and universal strategies in macro-measurement. At the same time, it is found that the measurement entropy of CPL detection may be the key factor to determine the isotropy and anisotropy of the CPL signal. This discovery would bring new opportunities to the research of chiral luminescent materials. This strategy can also greatly reduce the development difficulty of CPL materials and show high application potential in biomedical, photoelectric information and other fields.