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INORGANICA CHIMICA ACTA · 2017 · IF 2.002

Electrochemically probing the correlation between photo-induced CO-releasing behaviours and their LUMO energies of three diiron carbonyl complexes

Xiujuan Jiang,Hailong Wang,Yonggang Feng,Erxing Gu,Xiaoming Liu

Three diiron carbonyl complexes with different carbonyl ligands have been synthesized. Pentacarbonyl and tetracarbonyl complexes 2 and 3 were prepared by the substitution of the bound CO of complex 1 by PPh 3 . The photo-induced CO-releasing behaviours of these complexes correlate linearly to their reduction potentials and further to the energy level of their LUMOs. The more negative the reduction potentials, the more reactive the complexes. The photo-induced CO-release can be further promoted when a nucleophile is presented such as thiopronin.

CAS / MDL: 59-52-9 1953-02-2 603-35-0

研究领域: 化学 · 生物无机化学

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JOURNAL OF MEMBRANE SCIENCE · 2023 · IF 9.5

The effect of diamine structure on the chemical stability of polyamide nanofiltration membranes: Experimental and density functional theory studies

Meng-Han Miao,Jin-Kai Qiu,Zhen-Liang Xu,Cheng Lian,Hong-Lai Liu,Jia-Hui Li,Yong-Jian Tang

Monomers are elementary units that constitute the polyamide layer, which determines the properties of nanofiltration membranes. The design of nanofiltration membranes with both high separation performance and outstanding chemical stability remains a challenge. In this study, two typical monomers, heterocyclic monomer molecule-piperazine (PIP) and carbon ring molecule-1,4-cyclohexane diamine (CHDA), were applied as aqueous monomers for interfacial polymerization to generate polyamide nanofiltration membranes. The physicochemical properties of the two nanofiltration membranes were comprehensively investigated. The results demonstrated that the nanofiltration membrane fabricated via CHDA exhibited more chemical stability than that fabricated via PIP. The mechanisms influencing the chemical stability difference were elucidated via multiscale simulation. The CHDA polyamide has higher levels of HOMO-LUMO energy and Gibbs-free energy, which make it more stable under harsh chemical environments. Overall, this work presents the effect of the diamine structure on the chemical stability of polyamide NF membranes, which can inspire highly chemically stable nanofiltration membrane fabrication.

CAS / MDL: 25322-68-3

研究领域: 材料科学 · 化学工程 · 纳米技术

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Electrochemically probing the correlation between photo-induced CO-releasing behaviours and their LUMO energies of three diiron carbonyl complexes

The effect of diamine structure on the chemical stability of polyamide nanofiltration membranes: Experimental and density functional theory studies