手性(物理)
对映体药物
二次谐波产生
材料科学
光致发光
结晶学
单晶
发光
量子产额
化学
对映选择合成
光学
光电子学
有机化学
物理
激光器
手征对称性
催化作用
量子力学
Nambu–Jona Lasinio模型
夸克
荧光
作者
Junjie Guan,Wenqing Han,Youpei Zhang,Jiuzhou Zhao,Shanshan Han,Yue Wang,Bona Fu,H. Z. Kang,Peihan Wang,Puxin Cheng,Yongshen Zheng,Jialiang Xu,Xian‐He Bu
标识
DOI:10.1002/anie.202503083
摘要
Chiral organic‐inorganic hybrid metal halides (OIHMHs) are commonly constructed by introducing pairs of enantiomorphic chiral precursors through a single chirality transfer pathway, which may limit the regulation of chiral structrual diversity and chiroptoelectronic properties. Herein, we propose a new strategy for achieving reversible chiral induction of OIHMHs with inverted chiroptical properties through external and internal chirality transfer pathways, by utilizing a single chiral reagent R‐/S‐α‐methylbenzylamine (R‐/S‐MBA). Specifically, R‐MBA can externally induce chiral enrichment of M‐DMA4(Bi0.486In0.511Sb0.003)Cl7 (M‐DMA4(Bi‐In‐Sb)Cl7, DMA = dimethylammonium cation) without integrating into structure. Conversely, R‐MBA can insert into structure, internally inducing the formation of DMA(R‐MBA)2(Bi0.634In0.362Sb0.004)Cl6 (DMA(R‐MBA)2(Bi‐In‐Sb)Cl6), which reverse the structural arrangements and inverts both linear and nonlinear chiroptical properties. Both externally and internally induced chiral OIHMHs exhibit significant chiroptical responses with high photoluminescence quantum yield (PLQY) and second harmonic generation (SHG). Moreover, the externally induced centimeter‐sized rhombic single crystal enables morphology‐ and angle‐dependent inverted circularly polarized luminescence with a dissymmetry factor of ~0.02, through single crystal anisotropy. The internal induction enhances SHG intensity by 9‐fold and increases PLQY to 98.9%. This multi‐path chirality transfer, based on a single chiral reagent, can significantly broaden the structural scope of functional chiral OIHMH materials and facilitate the regulation of chiroptoelectronic properties.
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