Local symmetry-breaking induces robust circularly polarized luminescence in achiral Dion-Jacobson tin-based perovskites

IF 13.3 1区工程技术 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Pub Date : 2025-01-28 DOI:10.1016/j.cej.2025.160058

Jianwu Wei, Dongmei Wu, Liya Zhou, Peican Chen, Yibo Chen, Jie Tian, Jiahong Pan, Qi Pang, Jin Zhong Zhang

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引用次数: 0

Abstract

The realization of circularly polarized luminescence (CPL) with high photoluminescence quantum yield (PLQY) and large luminescence dissymmetry g-factor (|g_lum|) in achiral lead-free perovskite poses a significant challenge. Herein, an achiral Dion-Jacobson (DJ) perovskite HDASnBr₄ (where HDA represents 1,6-diaminohexane) served as the main matrix to construct an R-DJ perovskite system (denoted as R-HDASnBr₄). This was achieved by incorporating a low dose of chiral ligand R-NEA ((R)-(+)-1-(1-naphthyl) ethylamine) to substitute for HAD locally. The R-HDASnBr₄ microcrystal exhibits warm white light CPL with both a large |g_lum| of 0.022 and an impressive PLQY of 91 % at room temperature. Our investigation reveals that the rigid chiral ligand R-NEA partially replaces the flexible straight-chain HDA, inducing a local symmetry-breaking distortion of an inorganic framework in R-HDASnBr₄, which in turn stimulates robust CPL activity in R-HDASnBr₄. This strategy can also flexibly bind to other tin-based DJ perovskites, demonstrating its generality for chiral transfer. Additionally, we have demonstrated that R-HDASnBr₄ can facilitate controlled asymmetric photopolymerization under X-ray, offering potential utility in drug delivery and bioengineering applications

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来源期刊

Chemical Engineering Journal 工程技术-工程：化工

CiteScore

21.70

自引率

9.30%

发文量

6781

审稿时长

2.4 months

期刊介绍： The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.