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- Title
Enantiomorphic Single Crystals of Linear Lead(II) Bromide Perovskitoids with White Circularly Polarized Emission.
- Authors
Jin, Kai‐Hang; Zhang, Yue; Li, Kai‐Jie; Sun, Meng‐En; Dong, Xi‐Yan; Wang, Qing‐Lun; Zang, Shuang‐Quan
- Abstract
Chiroptical hybrid organic–inorganic perovskites are emerging as a new class of promising materials with mirror optical signal responses for optoelectronic applications. However, chiroptical white‐emission materials have been scarcely unearthed. Herein, four pairs of hybrid lead(II) bromide perovskitoids were obtained, namely, (R)‐ and (S)‐(H2MPz)PbBr4 (R/S‐MPz=(R)‐(−)/(S)‐( )‐2‐methylpiperazine) (1 and 2), (R)‐ and (S)‐(H2MPz)3Pb2Br10⋅2 DMAc (3 and 4), (R)‐ and (S)‐(H2MPz)PbBr4⋅0.5 MeCN (5 and 6) and (R)‐ and (S)‐(H2MPz)2Pb2Br8⋅DCM (7 and 8). Notably, they all exhibit ultrabroadband emission and chiroptical signals. Perovskitoids 3–6 even achieve white circularly polarized emission with a high dissymmetric factor (glum) (±3×10−3 for 3 and 4; ±8×10−3 for 5 and 6). This new type of hybrid perovskitoids will attract attention and find applications in chiroptical fields because of the extensively and easily tunable photophysical properties.
- Subjects
SINGLE crystals; BROMIDES; OPTICAL mirrors; OPTICAL materials; PEROVSKITE; INORGANIC polymers
- Publication
Angewandte Chemie, 2022, Vol 134, Issue 30, p1
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.202205317