Permanent Porosity in the Room-Temperature Magnet and Magnonic Material V(TCNE) 2

Jesse G Park; David E Jaramillo; Yueguang Shi; Henry Z H Jiang; Huma Yusuf; Hiroyasu Furukawa; Eric D Bloch; Donley S Cormode; Joel S Miller; T David Harris; Ezekiel Johnston-Halperin; Michael E Flatté; Jeffrey R Long

doi:10.1021/acscentsci.3c00053

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Permanent Porosity in the Room-Temperature Magnet and Magnonic Material V(TCNE) 2

Journal article

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Permanent Porosity in the Room-Temperature Magnet and Magnonic Material V(TCNE) 2

Jesse G Park, David E Jaramillo, Yueguang Shi, Henry Z H Jiang, Huma Yusuf, Hiroyasu Furukawa, Eric D Bloch, Donley S Cormode, Joel S Miller, T David Harris, …

ACS central science, Vol.9(4), pp.777-786

04/26/2023

DOI: 10.1021/acscentsci.3c00053

PMCID: PMC10141614

PMID: 37122461

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Abstract

Materials that simultaneously exhibit permanent porosity and high-temperature magnetic order could lead to advances in fundamental physics and numerous emerging technologies. Herein, we show that the archetypal molecule-based magnet and magnonic material V(TCNE) (TCNE = tetracyanoethylene) can be desolvated to generate a room-temperature microporous magnet. The solution-phase reaction of V(CO) with TCNE yields V(TCNE) ·0.95CH Cl , for which a characteristic temperature of * = 646 K is estimated from a Bloch fit to variable-temperature magnetization data. Removal of the solvent under reduced pressure affords the activated compound V(TCNE) , which exhibits a * value of 590 K and permanent microporosity (Langmuir surface area of 850 m /g). The porous structure of V(TCNE) is accessible to the small gas molecules H , N , O , CO , ethane, and ethylene. While V(TCNE) exhibits thermally activated electron transfer with O , all the other studied gases engage in physisorption. The * value of V(TCNE) is slightly modulated upon adsorption of H ( * = 583 K) or CO ( * = 596 K), while it decreases more significantly upon ethylene insertion ( * = 459 K). These results provide an initial demonstration of microporosity in a room-temperature magnet and highlight the possibility of further incorporation of small-molecule guests, potentially even molecular qubits, toward future applications.

Details

Title: Subtitle: Permanent Porosity in the Room-Temperature Magnet and Magnonic Material V(TCNE) 2
Creators: Jesse G Park - University of California, Berkeley
David E Jaramillo - University of California, Berkeley
Yueguang Shi - University of Iowa
Henry Z H Jiang - University of California, Berkeley
Huma Yusuf - The Ohio State University
Hiroyasu Furukawa - University of California, Berkeley
Eric D Bloch - University of California, Berkeley
Donley S Cormode - The Ohio State University
Joel S Miller - University of Utah
T David Harris - University of California, Berkeley
Ezekiel Johnston-Halperin - The Ohio State University
Michael E Flatté - University of Iowa
Jeffrey R Long - University of California, Berkeley
Resource Type: Journal article
Publication Details: ACS central science, Vol.9(4), pp.777-786
DOI: 10.1021/acscentsci.3c00053
PMID: 37122461
PMCID: PMC10141614
NLM abbreviation: ACS Cent Sci
ISSN: 2374-7943
eISSN: 2374-7951
Grant note: DOI: 10.13039/100006151, name: Basic Energy Sciences, award: DE-SC0021314; DOI: 10.13039/100000082, name: Division of Graduate Education
Language: English
Date published: 04/26/2023
Academic Unit: Electrical and Computer Engineering; Physics and Astronomy
Record Identifier: 9984428839402771

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