期刊
INORGANIC CHEMISTRY
卷 61, 期 17, 页码 6403-6410出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.inorgchem.1c03920
关键词
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资金
- National Science Foundation of China [21971207]
- Natural Science Foundation of Science and Technology Agency of Shanxi Province [20210302124654]
- Scientific and Technological Innovation Programs of Higher Education Institutions in Shanxi [2021L259]
- Shaanxi Provincial Education Department [20JK0648]
- Outstanding Young Talents of Shaanxi Universities
- Scientific and Technological Plan Project of Xi'an [21XJZZ0012]
- Key Research and Development Program of Shaanxi Province of China
This study emphasizes the size effect of arylenediimide (ADI) pi-conjugate systems on photoinduced electron transfer in photoresponsive coordination polymers (CPs). Two Eu3+-based CPs were used as examples to demonstrate that the size of the diimide cores can impact the interfacial contacts and luminescence properties.
Various arylenediimides (ADIs) have been applied to construct photoresponsive coordination polymers (CPs), while the sizeeffect of ADI pi-conjugate systems on the photoresponsive behaviors inCPs has been overlooked in the past few years. Herein, we emphasize thesize effect of ADI pi-conjugate systems on photoinduced electron transfer(ET) in CPs, taking two Eu3+-based CPs, [Eu(H2BINDI)-(BINDI)0.5(H2O)2]middotNH2(CH3)2middot8H2O(1)and[Eu2(BIPMDI)-(DMF)4(NO3)2]middotH2Omiddot2DMF (2)[H4BINDI =N,N '-bis(5-isophthalicacid)naphthalenediimide; H4BIPMDI =N,N '-bis(5-isophthalic acid)-pyromellitic diimide; DMF =N,N-dimethylformamide], as a case. Both1and2display ET-based photochromic behaviors with distinct photo-responsive rates and coloration contrast, which can contribute to the sizeeffect of diimide cores on the interfacial contacts of electron donors/acceptors. Meanwhile, ET between the neighboring larger NDI cores ofthe H4BINDI ligands can block ligand-to-metal charge transfer and quench luminescence of the Eu3+metal center in1. Therefore,this work will provide a theoretical basis for the development and exploration of photoresponsive materials.
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