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18 results on '"Deng, Shu-Qi"'

17. Construction of d10 metal coordination polymers based on in situ formed 3,5-di(1H-1,2,4-triazol-1-yl)benzoic acid from different precursors: influence of in situ hydrolysis reactions on assembly process.

Author

Deng, Shu-Qi, Mo, Xiao-Jing, Feng, Yin, Cai, Song-Liang, Zhang, Wei-Guang, and Zheng, Sheng-Run

Subjects
*CRYSTAL structure, *LIGANDS (Chemistry), *POLYMERS
Abstract

To explore the influence of in situ hydrolysis reaction on the assembly of coordination polymers (CPs), seven new CPs based on in situ formed 3,5-di(1H-1,2,4-triazol-1-yl)benzoic acid (HDTBA) from two different precursors, 3,5-di(1H-1,2,4-triazol-1-yl)benzonitrile (DTBN) and 5-(3,5-di(1H-1,2,4-triazol-1-yl)phenyl)-2H-tetrazole (HDTPT), were constructed. When DTBN is used as a precursor, four CPs, namely, [Zn(DTBA)2]n (1), [Cd(DTBA)2]n (2 and 3), and {[Cd(DTBA)2]·H2O}n (4), were obtained under hydrothermal conditions. Compound 1 is a nested double layer structure based on (6,3) networks. Compounds 2 and 3 are supramolecular isomers which were synthesized from Cd(NO3)2·6H2O and Cd(ClO4)2·6H2O, respectively. Compound 2 displays a 3D framework with a two-folded interpenetrating bimodal (3,6)-connected rtl network topology, while compound 3 possesses a 2D network with a CdI2-type network topology. Compound 4 presents a 3D framework that can be denoted as a new (3,5)-connected topological net with point symbol of {4·6·8}{4·64·85}. When HDTPT was used as a precursor under similar conditions, three CPs, namely, Zn(DTBA)NO3]n (5), [Zn(DTBA)Cl]n (6) and {[Cd(DTBA)(NO3)(H2O)]·H2O}n (7), were obtained. Compound 5 is a 2D network with a (4·82) topology, while compounds 6–7 are 2D networks with the same (6,3) network topology. Interestingly, anion…π interaction between inorganic anions and triazolyl ring can be observed and plays an important role in connecting the 2D layer into 3D supramolecular frameworks in 5–7. The results show that the in situ hydrolysis reactions affect the assembly processes significantly. The in situ reactions regulate the structure via changing the concentration (but not the total amount) of HDTBA during the assembly process, which in turn regulates the coordination competition between HDTBA and inorganic anions, thus generating different structures. Furthermore, their solid-state fluorescent properties were investigated at room temperature. [ABSTRACT FROM AUTHOR]

Published
2018
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18. A review of lithium-O2/CO2and lithium-CO2batteries: Advanced electrodes/materials/electrolytes and functional mechanisms

Author

Ezeigwe, Ejikeme Raphael, Dong, Li, Manjunatha, Revanasiddappa, Zuo, Yinze, Deng, Shu-Qi, Tan, Michelle, Yan, Wei, Zhang, Jiujun, and Wilkinson, David P.

Abstract

Rechargeable lithium-O2/CO2and lithium-CO2batteries are the promising energy devices expected to be the next generation of lithium batteries with high energy densities. However, their unsatisfactory performance of crucial materials such as electrodes, catalysts and electrolytes are still the challenges hindering the technology’s practical applications. To develop high-performance lithium-CO2batteries, worldwide researchers have been focusing on exploring new electrode/electrolyte materials and the related technologies by developing novel synthesis methods and innovative assembling techniques, understanding degradation mechanisms, and creating mitigation strategies with particular emphasis on catalysts for CO2reduction reaction and CO2evolution reaction as well as their reaction products. In this paper, the state-of-the-art development in lithium-CO2battery key materials, components and device assembling along with functional and degradation mechanisms and mitigation strategies are comprehensively reviewed. To facilitate further research and development of lithium-CO2batteries toward practical applications, the existing challenges and several future research directions are discussed in this paper.

Published
2022
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