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Ji J, Qi C, Zhao H, Yan X, Chai Z, Wang S, Zheng T. Regulating the Porosity of Uranyl Phosphonate Frameworks with Quaternary Ammonium: Structure, Characterization, and Fluorescent Temperature Sensors. Inorg Chem 2022; 61:16794-16804. [PMID: 36214515 DOI: 10.1021/acs.inorgchem.2c02636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Regulating the porosity of metal phosphonate frameworks is still challenging, even though this is not an issue for carboxylate-based metal-organic frameworks (MOFs). Quaternary ammonium cations are common template reagents widely used for structure control. However, it is not successful for uranyl phosphonate frameworks (UPFs) because the large volume sizes of templates make it challenging to enter the channels constructed by phosphonate ligands with small pore sizes and low dimensions. In this work, three new porous three-dimensional UPFs were synthesized using the phosphonate ligand and template reagents with the same geometry, namely, (TEA)2(UO2)3(TppmH4)2·2H2O (UPF-106), (TPA)2(UO2)3(TppmH4)2 (UPF-107), and (TBA)2(UO2)5(TppmH2)2(H2O)2·4H2O (UPF-108). The porosity of the UPFs in this work showed a positive relation with the sizes of the template ammonium cations. Thermogravimetric analysis and infrared and ultraviolet spectroscopy were performed. The variable-temperature fluorescence spectra of the three compounds showed that the fluorescence intensity has an excellent relation to temperature with a potential application as fluorescence temperature sensors.
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Affiliation(s)
- Jinyan Ji
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China.,School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Chao Qi
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China.,School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Hongxia Zhao
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China.,School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Xuewu Yan
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing210094, People's Republic of China
| | - Zhifang Chai
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou215123, People's Republic of China
| | - Shuao Wang
- State Key Laboratory of Radiation Medicine and Protection, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou215123, People's Republic of China
| | - Tao Zheng
- Yangtze River Delta Research Institute, Northwestern Polytechnical University, Suzhou215400, People's Republic of China.,School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an710072, People's Republic of China
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