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Organic Ferromagnetism: Trapping Spins in the Glassy State of an Organic Network Structure

Author(s)
Mahmood, JaveedPark, JungminShin, DongbinChoi, Hyun-JungSeo, Jeong-MinYoo, Jung-WooBaek, Jong-Beom
Issued Date
2018-10
DOI
10.1016/j.chempr.2018.07.006
URI
https://scholarworks.unist.ac.kr/handle/201301/24540
Fulltext
https://www.sciencedirect.com/science/article/pii/S2451929418303164?via%3Dihub
Citation
CHEM, v.4, no.10, pp.2357 - 2369
Abstract
The unique organic π-conjugated network structure was synthesized in trifluoromethanesulfonic acid at 155°C by self-polymerization of the tetracyanoquinodimethane (TCNQ) monomer in an efficient way. Highly stable free radicals achieved through the self-polymerization of TCNQ, these radicals originate from the 90° rotation of cyclohexadiene rings into phenyl rings and 120° ferromagnetic order around the triazine rings. The presence of unpaired electrons (radicals) in p-TCNQ was established by solid-state electron spin resonance spectroscopy, and the long-range magnetic ordering through the network was characterized by a Quantum Design SQUID-VSM. Designing and manipulating the spins in polymer networks via organic methodologies will provide alternative approaches for versatile future applications of plastic magnets.
Publisher
CELL PRESS
ISSN
2451-9294
Keyword
MOLECULE-BASED MAGNETSPOINT-DEFECTSSEMICONDUCTORGRAPHITEMETALSDRIVENMNFENICO

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