发光
手性(物理)
光致发光
圆二色性
量子产额
锰
结晶学
卤化物
化学
晶体结构
金属
材料科学
立体化学
物理
光电子学
光学
无机化学
手征对称性
有机化学
荧光
量子力学
Nambu–Jona Lasinio模型
夸克
作者
Jian Chen,Shuai Zhang,Xin Pan,Ruiqian Li,Yuankai Shi,Anthony K. Cheetham,Lingling Mao
标识
DOI:10.1002/anie.202205906
摘要
Chiral hybrid metal halides with a high dissymmetry factor (glum ) and a superior photoluminescence quantum yield (PLQY) are promising candidates for circularly polarized luminescence (CPL) light sources. Here, we report eight new chiral hybrid manganese halides, crystallizing in the non-centrosymmetric space group P21 21 21 and showing intense CPL emissions. Oppositely-signed circular dichroism (CD) and CPL signals are detected according to the R- and S-configurations of the chiral alkanolammonium cations. Time-resolved PL spectra show long averaged decay lifetimes up to 1 ms for (R-3-quinuclidinol)MnBr3 (R-1). The glum of polycrystalline samples for coordinated structures (23×10-3 ) is more than doubled compared with the non-coordinated ones (8.5×10-3 ), due to the structural variations. R-1 exhibit both a high glum and a high PLQY (50.2 %). The effective chirality transfer mechanism through coordination bonds, with strongly emissive MnII centers, enables a new class of high-performance CPL materials.
科研通智能强力驱动
Strongly Powered by AbleSci AI