Coordination polymers of Fe(III) and Al(III) ions with TCA ligand: distinctive fluorescence, CO2 uptake, redox-activity and oxygen evolution reaction

Dhara Barun; Sappati Subrahmanyam; Singh Santosh K.Kurungot SreekumarGhosh PrasenjitBallav Nirmalya

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Coordination polymers of Fe(III) and Al(III) ions with TCA ligand: distinctive fluorescence, CO2 uptake, redox-activity and oxygen evolution reaction

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Fe and Al belong to different groups in the periodic table, one from the p-block and the other from the d-block. In spite of their different groups, they have the similarity of exhibiting a stable 3+ oxidation state. Here we have prepared Fe(III) and Al(III) based coordination polymers in the form of metal-organic gels with the 4,4', 4 ''-tricarboxyltriphenylamine (TCA) ligand, namely Fe-TCA and Al-TCA, and evaluated some important physicochemical properties. Specifically, the electrical conductivity, redox-activity, porosity, and electrocatalytic activity (oxygen evolution reaction) of the Fe-TCA system were noted to be remarkably higher than those of the Al-TCA system. As for the photophysical properties, almost complete quenching of the fluorescence originating from TCA was observed in case of the Fe-TCA system, whereas for the Al-TCA system a significant retention of fluorescence with red-shifted emission was observed. Quantum mechanical calculations based on density functional theory (DFT) were performed to unravel the origin of such discriminative behaviour of these coordination polymer systems.

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《Dalton transactions: An international journal of inorganic chemistry》 |2016年第16期|6901-6908|共8页
作者
Dhara Barun; Sappati Subrahmanyam; Singh Santosh K.Kurungot SreekumarGhosh PrasenjitBallav Nirmalya;
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作者单位

IISER Pune, Dept Chem, Pune, Maharashtra, India;

CSIR NCL Pune, Phys & Mat Chem Div, Pune, Maharashtra, India;

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正文语种英语
中图分类化学;无机化学;
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Coordination polymers of Fe(III) and Al(III) ions with TCA ligand: distinctive fluorescence, CO2 uptake, redox-activity and oxygen evolution reaction

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