Voltage-induced modulation of the magnetic exchange in binuclear Fe(<scp>iii</scp>) complex deposited on Au(111) surface

Montenegro-Pohlhammer, Nicolás; Cárdenas-Jirón, Gloria; Calzado, Carmen J.

doi:10.1039/d4dt00580e

Dalton Trans.

2024

DOI: 10.1039/d4dt00580e

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Voltage-induced modulation of the magnetic exchange in binuclear Fe(iii) complex deposited on Au(111) surface

Nicolás Montenegro-Pohlhammer,

Gloria Cárdenas-Jirón,

Carmen J. Calzado

Abstract: We present a complete computational study devoted to the deposition of a magnetic binuclear complex on a metallic surface, aimed to obtain insight into the interaction of magnetically coupled complexes...

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Mechanisms for the Spin‐State Switching of Strapped Ni‐Porphyrin Complexes Deposited on Metal Surfaces: Insights from Quantum Chemical Calculations

Montenegro‐Pohlhammer,

Sánchez‐de‐Armas,

Gruber

et al. 2024

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The incorporation of molecular switches on nanodevices requires both the intactness of the molecule once deposited on a substrate and the persistence of the reversible switching feature. Recently, the reversible spin‐switching of strapped Ni(II)‐porphyrin complexes deposited on Ag(111) surface is demonstrated with low‐temperature scanning tunneling microscopy (STM). The spin transition is accompanied by the coordination change of the metal center, a phenomenon denominated in coordination‐induced spin‐state switching (CISSS). In this contribution, the spin switching of the deposited strapped Ni‐porphyrin molecules using different quantum chemistry approaches is explored. This calculations inform about the geometry and electronic structure of the adsorbed molecules and the origin of the voltage‐dependent switching promoted by the STM tip. Two different mechanisms are inspected to elucidate the key role of the tip, mainly the electron injection between the tip and the molecule and the differential stabilization of the two spin states by the applied electric field between the tip and the silver surface. This study puts in evidence the relevance of the pyridine ligand contained in the strap in the transport properties as in the CISSS process itself.

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Mechanisms for the Spin‐State Switching of Strapped Ni‐Porphyrin Complexes Deposited on Metal Surfaces: Insights from Quantum Chemical Calculations

Montenegro‐Pohlhammer,

Sánchez‐de‐Armas,

Gruber

et al. 2024

Small

View full text Add to dashboard Cite

show abstract

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Voltage-induced modulation of the magnetic exchange in binuclear Fe(iii) complex deposited on Au(111) surface

Abstract: We present a complete computational study devoted to the deposition of a magnetic binuclear complex on a metallic surface, aimed to obtain insight into the interaction of magnetically coupled complexes...

Cited by 1 publication

References 82 publications

Mechanisms for the Spin‐State Switching of Strapped Ni‐Porphyrin Complexes Deposited on Metal Surfaces: Insights from Quantum Chemical Calculations

Mechanisms for the Spin‐State Switching of Strapped Ni‐Porphyrin Complexes Deposited on Metal Surfaces: Insights from Quantum Chemical Calculations

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