近日，香港理工大学Wai-Yeung Wong团队发现手性发光离子对（CLIP）策略实现了非晶态铂配合物的圆极化磷光。2025年4月14日，《德国应用化学》杂志发表了这一成果。

手性离子配对（CIP）已被开发为一种有效的手性转移策略，从手性离子物种转移到其非手性反离子底物。当非手性抗衡离子被赋予发光特性时，由此产生的手性发光离子对（CLIP）将为高性能手性发光打开一扇新的窗户。研究组构建了三对CLIP分子，其特征是铂配合物作为非手性阳离子发光体，手性阴离子（CA）作为手性源。

CLIP分子表现出圆偏振磷光（CPP），量子产率（ΦPL）高达71.5%，非晶态不对称因子（gcpp）值为1.8×10^-2，胆甾醇液晶的gcpp值高达-0.99。结果表明，手性光学性质可以归因于从CA到形成的扭曲二聚体或寡聚体自组装铂配合物阳离子的手性转移。研究组提出了一种实现非晶手性金属配合物高性能手性发光的新方法，为揭示CLIP材料中的手性转移提供了一个简洁的模型。

附：英文原文

Title: Chiral Luminescent Ion Pair (CLIP) Strategy Enables Amorphous Platinum Complexes Circularly Polarized Phosphorescence

Author: Sheng-Qi Qiu, Mei-Yuan Li, Hua-Yue Li, Yao Xiao, Jiannan Xiao, Gayathri Parthasarathy, Zhengong Meng, Wai-Yeung Wong, Zhen-Qiang Yu

Issue&Volume: 2025-04-14

Abstract: Chiral ion-pairing (CIP) has been developed as an effective chirality transfer strategy from chiral ionic species to its achiral counter-ionic substrate. When the achiral counter-ions were endowed luminescent property, the resultant chiral luminescent ion pair (CLIP) will open a new window for high-performance chiral luminescence. In this research, three pairs of CLIP molecules featuring the platinum complexes as achiral cationic luminophore and the chiral anion (CA) as chiral source were constructed. The CLIP molecules demonstrate circularly polarized phosphorescence (CPP) with quantum yields (ΦPL) up to 71.5%, dissymmetry factor (gcpp) values of 1.8×10-2 in amorphous state and gcpp up to -0.99 in cholesteric liquid crystal. Results show that the chiroptical properties can be assigned to the chirality transfer from the CAs to the formed twisted dimeric or oligomeric self-assemblies of platinum complex cations. This research presents a new approach for achieving high performance chiral luminescence of amorphous chiral metal complexes, providing a concise model for revealing the chirality transfer in CLIP materials.

DOI: 10.1002/anie.202501011

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202501011