Comparison of Electrical Conductivity and Schottky Behavior of 4?[2?(9?anthryl)vinyl]pyridine Based Two 1D Coordination Polymers of Zn(II) and Cd(II)

This work emphasizes the comparison of charge transport and Schottky barrier diode behavior of 1D coordination polymers (CPs) of Zn(II) and Cd(II) based on highly conjugated ligand 4?[2?(9?anthryl)vinyl]pyridine and their applications in the fabrication of semiconducting devices. However, Cd?CP with 1D ribbon chain exhibits better charge transport as compared to 1D linear chain Zn?CP.AbstractWith the increase in demand of electronic devices in the modern civilization, research in material science is being projected to grow in faster rate. In this facet, coordination polymer (CP) based electronic device is one of the promising candidates to the material researchers. Herein, two new Zn(II) and Cd(II) based one?dimensional (1D) CPs, denoted as [Zn(4?avp)2(5?nip)]???(solvent)x (1) and [Cd(4?avp)(5?nip)(CH3OH)] (2) have been synthesized using relatively less explored highly conjugated polycyclic aromatic hydrocarbon (PAH) based monodentate ligand, 4?[2?(9?anthryl)vinyl]pyridine (4?avp) and bidentate linker 5?nitroisophthalic acid (H25?nip). In this instance, the CP 1 creates 1D chain polymer, while CP 2 is made up with 1D ladder polymer. It is interesting to note that both the CPs exhibit semiconducting nature and generate metal?semiconductor (MS) junction Schottky barrier diodes (SBDs). However, Cd?based CP 2 shows higher charge transport as compared to Zn?CP 1, which could be due to stronger ????? contacts as well as larger size of Cd metal in CP 2. The experimental results are well corroborated with theoretical density of states (DOS) calculations.

» Publication Date: 23/05/2024

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This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737


                   




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