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One-Dimensional Chiral Copper Iodide Chain-Like Structure Cu4I4(R/S-3-quinuclidinol)3 with Near-Unity Photoluminescence Quantum Yield and Efficient Circularly Polarized Luminescence
Small ( IF 13.0 ) Pub Date : 2023-03-18 , DOI: 10.1002/smll.202300938 Jian Chen 1 , Xin Pan 1 , Xuanyu Zhang 2 , Chen Sun 1 , Congcong Chen 1 , Xiaoqin Ji 1 , Rui Chen 2 , Lingling Mao 1
Small ( IF 13.0 ) Pub Date : 2023-03-18 , DOI: 10.1002/smll.202300938 Jian Chen 1 , Xin Pan 1 , Xuanyu Zhang 2 , Chen Sun 1 , Congcong Chen 1 , Xiaoqin Ji 1 , Rui Chen 2 , Lingling Mao 1
Affiliation
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Chiral organic−inorganic hybrid metal halide materials have shown great potential for circularly polarized luminescence (CPL) related applications for their tunable structures and efficient emissions. Here, this work combines the highly emissive Cu4I4 cubane cluster with chiral organic ligand R/S-3-quinuclidinol, to construct a new type of 1D Cu-I chains, namely Cu4I4(R/S-3-quinuclidinol)3, crystallizing in noncentrosymmetric monoclinic P21 space group. These enantiomorphic hybrids exhibit long-term stability and show bright yellow emission with a photoluminescence quantum yield (PLQY) close to 100%. Due to the successful chirality transfer from the chiral ligands to the inorganic backbone, the enantiomers show intriguing chiroptical properties, such as circular dichroism (CD) and CPL. The CPL dissymmetry factor (glum) is measured to be ≈4 × 10−3. Time-resolved photoluminescence (PL) measurements show long averaged decay lifetime up to 10 µs. The structural details within the Cu4I4 reveal the chiral nature of these basic building units, which are significantly different than in the achiral case. This discovery provides new structural insights for the design of high performance CPL materials and their applications in light emitting devices.
中文翻译：
具有近乎一致的光致发光量子产率和高效圆偏振发光的一维手性碘化铜链状结构 Cu4I4(R/S-3-quinuclidinol)3
手性有机-无机杂化金属卤化物材料因其可调谐结构和高效发射而在圆偏振发光（CPL）相关应用中显示出巨大潜力。在这里，这项工作将高发射性的Cu 4 I 4立方烷簇与手性有机配体R / S -3-奎宁环醇相结合，构建了一种新型的一维Cu-I链，即Cu 4 I 4 ( R / S -3-奎宁环醇) 3，以非中心对称单斜晶系P 2 1结晶空间组。这些对映体杂化物表现出长期稳定性，并显示出亮黄色发射，光致发光量子产率 (PLQY) 接近 100%。由于从手性配体到无机主链的手性成功转移，对映体显示出有趣的手性光学性质，例如圆二色性（CD）和CPL。CPL 不对称因子 ( g lum ) 经测量约为 4 × 10 -3。时间分辨光致发光 (PL) 测量显示平均衰减寿命长达 10 µs。Cu 4 I 4内的结构细节揭示了这些基本构建单元的手性性质，其与非手性情况显着不同。这一发现为高性能CPL材料的设计及其在发光器件中的应用提供了新的结构见解。
更新日期：2023-03-18
中文翻译：
具有近乎一致的光致发光量子产率和高效圆偏振发光的一维手性碘化铜链状结构 Cu4I4(R/S-3-quinuclidinol)3
手性有机-无机杂化金属卤化物材料因其可调谐结构和高效发射而在圆偏振发光（CPL）相关应用中显示出巨大潜力。在这里，这项工作将高发射性的Cu 4 I 4立方烷簇与手性有机配体R / S -3-奎宁环醇相结合，构建了一种新型的一维Cu-I链，即Cu 4 I 4 ( R / S -3-奎宁环醇) 3，以非中心对称单斜晶系P 2 1结晶空间组。这些对映体杂化物表现出长期稳定性，并显示出亮黄色发射，光致发光量子产率 (PLQY) 接近 100%。由于从手性配体到无机主链的手性成功转移，对映体显示出有趣的手性光学性质，例如圆二色性（CD）和CPL。CPL 不对称因子 ( g lum ) 经测量约为 4 × 10 -3。时间分辨光致发光 (PL) 测量显示平均衰减寿命长达 10 µs。Cu 4 I 4内的结构细节揭示了这些基本构建单元的手性性质，其与非手性情况显着不同。这一发现为高性能CPL材料的设计及其在发光器件中的应用提供了新的结构见解。
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