@article{Hao2025, 
author = {Tong Hao and Bei Xu and Xinchao Wang and Hongrui Zheng and Shangda Li and Fei Wang and Jian Zhang},
title = {Circularly polarized luminescence enhancement in rare-earth MOFs due to framework chirality and host–guest energy transfer},
year = {2025},
journal = {Polyoxometalates},
volume = {4},
number = {3},
pages = {9140095},
keywords = {chiral metal–organic frameworks, rare-earth metal, circularly polarized luminescence, host–guest chemistry},
url = {https://www.sciopen.com/article/10.26599/POM.2025.9140095},
doi = {10.26599/POM.2025.9140095},
abstract = {Owing to their tunable structures and strong emission, chiral metal–organic frameworks (CMOFs) incorporating rare-earth ions hold great promise for circularly polarized luminescence (CPL). Herein, enantiomeric rare-earth CMOFs are synthesized via the direct self-assembly of optically pure ligands (1,3-bis((S)- and (R)-1-carboxyethyl)-1H-imidazol-3-ium chlorides) with Tb3+ ions and shown to exhibit CPL with a dissymmetry factor (|glum|) of 0.016, which is attributed to efficient chirality transfer and the antenna effect. The introduction of a luminescent guest (MnCl42−) into the framework channels markedly enhances CPL and increases |glum| to 0.071. The results of control experiments and spectral analysis indicate that this enhancement arises from the synergy between host–guest energy transfer and chirality transfer. This work describes a modular strategy for constructing CPL-active rare-earth CMOFs and provides a general design principle for tuning their chiroptical properties through host–guest interactions.}
}