光致发光
系统间交叉
镧系元素
金属有机骨架
量子产额
材料科学
联苯
光化学
金属
配体(生物化学)
共轭体系
水溶液中的金属离子
离子
纳米技术
单重态
激发态
化学
荧光
物理化学
光电子学
有机化学
复合材料
聚合物
冶金
原子物理学
受体
吸附
物理
量子力学
亚苯基
生物化学
作者
Yixuan Wang,Xinyi Yang,Chuang LIU,Zhaodong Liu,Qianrong Fang,Fu‐Quan Bai,Shiping Wang,Xuyuan Hou,Bingtao Feng,Banglin Chen,Bo Zou
标识
DOI:10.1002/anie.202210836
摘要
Abstract Lanthanide metal–organic frameworks are of great interest in the development of photoluminescence (PL) materials owing to their structural tunability and intrinsic features of lanthanide elements. However, there exists some limitations arising from poor matching with metal ions, thereby exhibiting a weak ligand‐to‐metal energy transfer (LMET) process. Here we demonstrate a pressure‐treated strategy for achieving high PL performance in green‐emitting Tb(BTC)(H 2 O) 6 . The PL quantum yield of pressure‐treated sample increased from 50.6 % to 90.4 %. We found that the enhanced hydrogen bonds locked the conjugated configuration formed by two planes of carboxyl group and benzene ring, enabling the promoted intersystem crossing to effectively drive LMET. Moreover, the optimized singlet and triplet states also validated the facilitated LMET process. This work opens the opportunity of structure optimization to improve PL performance in MOFs by pressure‐treated engineering.
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