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Coordination Polymers of Polyphenyl-Substituted Potassium Cyclopentadienides. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227725. [PMID: 36431825 PMCID: PMC9696914 DOI: 10.3390/molecules27227725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/05/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022]
Abstract
A series of potassium salts of di- and tri-arylsubstituted cyclopentadienes has been obtained by the metalation of the corresponding cyclopentadienes with benzylpotassium in THF media. Crystals of all compounds, afforded by recrystallization from THF/hexane, diglyme-THF/hexane and toluene/hexane mixtures, have been studied by X-ray diffraction. All studied potassium cyclopentadienides exhibit the luminescence at room temperature and overall quantum yield of photoluminescence for potassium salt of diarylsubstituted cyclopentadiene is 18%.
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Wang Z, Gu S, Cao L, Kong L, Wang Z, Qin N, Li M, Luo W, Chen J, Wu S, Liu G, Yuan H, Bai Y, Zhang K, Lu Z. Redox of Dual-Radical Intermediates in a Methylene-Linked Covalent Triazine Framework for High-Performance Lithium-Ion Batteries. ACS APPLIED MATERIALS & INTERFACES 2021; 13:514-521. [PMID: 33326203 DOI: 10.1021/acsami.0c17692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Covalent triazine frameworks (CTFs) are promising electrodes for rechargeable batteries due to their adjustable structures, rich redox sites, and tunable porosity. However, the CTFs usually exhibit inferior electrochemical stability because of the inactivation of the unstable radical intermediates. Here, a methylene-linked CTF has been synthesized and evaluated as a cathode for rechargeable lithium-ion batteries. Electron paramagnetic resonance (EPR) and in situ Raman characterizations demonstrated that the redox activity and reversibility of α-C and triazine radical intermediates are essentially important for the charging/discharging process, which have been efficiently stabilized by the synergetic π conjugation and hindrance effect caused by the adjacent rigid triazine rings and benzene rings in the unique CTF-p framework. Additionally, the methylene groups provided extra redox-active sites. As a result, high capacity and cycling stability were achieved. This work inspires the rational modulation of the radical intermediates to enhance the electrochemical performance of organic electrode materials for the next-generation energy storage devices.
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Affiliation(s)
- Zhiqiang Wang
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Shuai Gu
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077 Hong Kong, P. R. China
| | - Lujie Cao
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Long Kong
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Zhenyu Wang
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Ning Qin
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077 Hong Kong, P. R. China
| | - Muqing Li
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Wen Luo
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Jingjing Chen
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Sisi Wu
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Guiyu Liu
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Huimin Yuan
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Yunfei Bai
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
| | - Kaili Zhang
- Department of Mechanical Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, 999077 Hong Kong, P. R. China
| | - Zhouguang Lu
- Department of Materials Science and Engineering, Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices, Southern University of Science and Technology, Shenzhen, 518055 Guangdong, P. R. China
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Zhao MG, Hao TT, Zhang X, Ma JP, Su JH, Zheng W. Direct Evidence for Neutral N-Pyrazolyl Radicals: Paddlewheel Dibismuthanes Bearing Pyrazolato Ligands with Very Short Bi–Bi Single Bonds. Inorg Chem 2017; 56:12678-12681. [DOI: 10.1021/acs.inorgchem.7b01902] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ming-Gang Zhao
- Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Linfen, Shanxi 041004, China
| | - Ting-Ting Hao
- Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Linfen, Shanxi 041004, China
| | - Xiang Zhang
- Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Linfen, Shanxi 041004, China
| | - Jian-Ping Ma
- College of Chemistry, Chemical Engineering
and Materials Science, Shandong Normal University, Jinan, Shandong 250014, China
| | - Ji-Hu Su
- CAS Key
Laboratory of Microscale Magnetic Resonance, Department of Modern
Physics, University of Science and Technology of China, Hefei 230026, China
| | - Wenjun Zheng
- Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Linfen, Shanxi 041004, China
- Key Laboratory of
Magnetic Molecules and Magnetic Information Material, Ministry of Education, Linfen, Shanxi 041004, China
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Su J, Wang B, Liu D, Du L, Liu Y, Su J, Zheng W. A 1,2,4-diazaphospholyl radical and its nitrogen-phosphorus coupled dimer: synthesis, X-ray structural characterization, EPR analysis, and computational studies. Chem Commun (Camb) 2015; 51:12680-3. [PMID: 26166365 DOI: 10.1039/c5cc05125h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The oxidation of 1,2,4-diazaphospholide potassium (K(+)[]) produces a neutral 1,2,4-diazaphospholyl radical () which can subsequently afford the (N)-(P) dimer involving a N-P linkage.
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Affiliation(s)
- Jing Su
- Institute of Organic Chemistry & College of Chemical and Materials Science, Shanxi Normal University, Gongyuan Street 1, Linfen, Shanxi Province, 041004, China.
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