Student Seminar
Name: Ms. Archita Sarkar
Title: Recent Advancement in Emergent Two-dimensional Conductive Magnets
Date & Time: Thursday, 08th August 2024 at 4.00 p.m.
Venue: Rajarshi Bhattacharya Memorial Lecture Hall, Chemical Sciences Building
Abstract:
Two-dimensional porous coordination networks (CNs), which are synthesized through the coordination bonding of metal ions with organic ligands, have long been thought of as insulating material.1 The incorporation of conductivity into these porous CNs has recently gained interest. Incorporation of both the porosity and electronic delocalization in extended crystal lattices has facilitated fundamental studies of electricity and magnetism in two dimensions. 2,3 Recent attention has emphasized multidimensional coordination networks involving redox-active ligands, which exhibit interesting inner-sphere redox reactions with metal ions, leading to incredible electronic structures and promoting both magnetism and electronic conductivity in two dimensional materials. 4 The majority of these two-dimensional CNs have a honeycomb lattice, with metal cations arranged in a Kagomé networks implying that they are the potential choices for geometrically frustrated spin systems exhibiting novel magnetic behaviours such as a quantum spin liquid.5
In this seminar, I will discussregarding the generation of two-dimensional CNs along with their electrical conductivity and magnetic properties, magnetically frustrated systems as well as their application in spintronics. 6
References:
1. Xie. L. S. et al., Electrically Conductive Metal–Organic Frameworks, Chem. Rev. 2020, 120, 8536-8580
2. Day. R. W. et al., Single Crystals of Electrically Conductive Two-Dimensional Metal– Organic Frameworks: Structural and Electrical Transport Properties, ACS Cent. Sci. 2019, 5, 1959-1964
3. Dou. J.-H. et al., Atomically precise single-crystal structures of electrically conducting 2D metal–organic frameworks, Nat. Mater. 2021, 20, 222–228
4. Pedersen. K. S. et al., Formation of the layered conductive magnet CrCl2(pyrazine)2 through redox-active coordination chemistry, Nat. Chem. 2018, 10,1056–1061
5. Misumi. Y. et. al., Quantum Spin Liquid State in a Two-Dimensional Semiconductive Metal–Organic Framework, J. Am. Chem. Soc. 2020, 142, 16513−16517
6. Xiaoli. Y. et al., Two-Dimensional Metal-Organic Frameworks Towards Spintronics, Angew. Chem. Int. Ed. 2023, 62, 1-14