01904nas a2200205   4500008004100000022001400041245015400055210006900209260000800278300001400286490000700300520113000307100001701437700002601454700002301480700002401503700002101527700002101548856012901569       2016                        eng d  a1477-922600aCoordination polymers of Fe(III) and Al(III) ions with TCA ligand: distinctive fluorescence, CO2 uptake, redox-activity and oxygen evolution reaction0 aCoordination polymers of FeIII and AlIII ions with TCA ligand di  cFEB  a6901-69080 v453 a<p>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.</p>1 aDhara, Barun1 aSappati, Subrahmanyam1 aSingh, Santosh, K.1 aKurungot, Sreekumar1 aGhosh, Prasenjit1 aBallav, Nirmalya  uhttps://library.ncl.res.in/content/coordination-polymers-feiii-and-aliii-ions-tca-ligand-distinctive-fluorescence-co2-uptake