TY - JOUR

T1 - Circularly Polarized Luminescence in Achiral Tin-Based Perovskites via Structural Isomer-Driven Coordination Interaction

AU - Wu, Dongmei

AU - Wei, Jianwu

AU - Luo, Binbin

AU - Zhou, Liya

AU - Chen, Peican

AU - Tian, Jie

AU - Pan, Jiahong

AU - Emeline, Alexei V

AU - Zhang, Jin Zhong

AU - Pang, Qi

N1 - PMID: 40251715

PY - 2025/4/18

Y1 - 2025/4/18

N2 - A chiral bidentate ligand, (R)-(−)-1-amino-2-propanol (denoted as R1) or (R)-(−)-2-amino-1-propanol (denoted as R2), was used to modify achiral 2D tin-based perovskite HDASnBr4 (HDA: 1,6-hexamethylenediamine) to form R1-HDASnBr4 or R2-HDASnBr4 by an acid precipitation method. R1-HDASnBr4 exhibits a near-unity photoluminescence quantum yield (PLQY) and strong yellow circularly polarized luminescence (CPL) with a luminescence asymmetry g-factor (|glum|) of 8.3 × 10–3, while R2-HDASnBr4 shows a PLQY of 95% and |glum| of 3.2 × 10–3. Both exhibit strong CPL activities, attributed to the significant centro-asymmetric distortion induced by the interaction between the chiral ligand and the inorganic lattice of 2D perovskites. The |glum| of R1-HDASnBr4 is 2.6× that of R2-HDASnBr4, resulting from the direct coordination of the hydroxyl group attached to the chiral carbons in R1 with the [SnBr6]4– inorganic framework, which induces a higher degree of distortion than the amino group in R2. Furthermore, we explored the potential of R1-HDASnBr4 as a chiral inducer and a CPL source to facilitate asymmetric polymerization. This work offers a simple strategy to introduce chirality to achiral perovskites.

AB - A chiral bidentate ligand, (R)-(−)-1-amino-2-propanol (denoted as R1) or (R)-(−)-2-amino-1-propanol (denoted as R2), was used to modify achiral 2D tin-based perovskite HDASnBr4 (HDA: 1,6-hexamethylenediamine) to form R1-HDASnBr4 or R2-HDASnBr4 by an acid precipitation method. R1-HDASnBr4 exhibits a near-unity photoluminescence quantum yield (PLQY) and strong yellow circularly polarized luminescence (CPL) with a luminescence asymmetry g-factor (|glum|) of 8.3 × 10–3, while R2-HDASnBr4 shows a PLQY of 95% and |glum| of 3.2 × 10–3. Both exhibit strong CPL activities, attributed to the significant centro-asymmetric distortion induced by the interaction between the chiral ligand and the inorganic lattice of 2D perovskites. The |glum| of R1-HDASnBr4 is 2.6× that of R2-HDASnBr4, resulting from the direct coordination of the hydroxyl group attached to the chiral carbons in R1 with the [SnBr6]4– inorganic framework, which induces a higher degree of distortion than the amino group in R2. Furthermore, we explored the potential of R1-HDASnBr4 as a chiral inducer and a CPL source to facilitate asymmetric polymerization. This work offers a simple strategy to introduce chirality to achiral perovskites.

UR - https://www.mendeley.com/catalogue/bc86e71c-2d04-3b11-a7f7-68e6f4cebb98/

U2 - 10.1021/acs.jpclett.5c00713

DO - 10.1021/acs.jpclett.5c00713

M3 - Article

VL - 16

SP - 4181

EP - 4188

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

SN - 1948-7185

IS - 17

ER -