TY - JOUR
T1 - Radical-Based Coordination Polymers as a Platform for Magnetoluminescence
AU - Kimura, Shun
AU - Matsuoka, Ryota
AU - Kimura, Shojiro
AU - Nishihara, Hiroshi
AU - Kusamoto, Tetsuro
N1 - Funding Information:
The present study was supported by JST CREST Grant Number JPMJCR15F2, JST PRESTO Grant Number JPMJPR20L4, and JSPS KAKENHI Grant Numbers JP20H02759, JP19K22197, JP19H05460, JP18J21163. S.K. acknowledges MERIT (Material Education program for the future leaders in Research, Industry, and Technology) in the MEXT Leading Graduate School Doctoral Program. Luminescence measurements under magnetic fields were performed at the High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University (Project Nos. 20H0029 and 19H0052).
Publisher Copyright:
© 2021 American Chemical Society. All rights reserved.
PY - 2021/4/21
Y1 - 2021/4/21
N2 - Spin-correlated electronic and magnetic properties of organic radicals have been developed, but luminescence properties, based on interplay with spins, have rarely been reported. The effect of magnetic fields on luminescence (i.e., magnetoluminescence) is a rare example of such properties, observed to date only in radicals dispersed in host matrices. We now report a novel method for achieving radical magnetoluminescence involving radical-based coordination polymers (CPs). The luminescence properties of the bis(3,5-dichloro-4-pyridyl)(2,4,6-trichlorophenyl)methyl (bisPyTM) and tris(3,5-dichloro-4-pyridyl)methyl (trisPyM) radicals and their 1D and 2D ZnII CPs were investigated. Although solid-state emissions of bisPyTM and trisPyM were not affected significantly by external magnetic fields at 4.2 K, those of CPs were greatly modulated. Studies of the crystal structures, magnetic properties, and the temperature-dependence and time-resolved properties of the magnetoluminescence indicate that the reduction of radical-radical interactions in CPs would be a key method for achieving magnetoluminescence.
AB - Spin-correlated electronic and magnetic properties of organic radicals have been developed, but luminescence properties, based on interplay with spins, have rarely been reported. The effect of magnetic fields on luminescence (i.e., magnetoluminescence) is a rare example of such properties, observed to date only in radicals dispersed in host matrices. We now report a novel method for achieving radical magnetoluminescence involving radical-based coordination polymers (CPs). The luminescence properties of the bis(3,5-dichloro-4-pyridyl)(2,4,6-trichlorophenyl)methyl (bisPyTM) and tris(3,5-dichloro-4-pyridyl)methyl (trisPyM) radicals and their 1D and 2D ZnII CPs were investigated. Although solid-state emissions of bisPyTM and trisPyM were not affected significantly by external magnetic fields at 4.2 K, those of CPs were greatly modulated. Studies of the crystal structures, magnetic properties, and the temperature-dependence and time-resolved properties of the magnetoluminescence indicate that the reduction of radical-radical interactions in CPs would be a key method for achieving magnetoluminescence.
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U2 - 10.1021/jacs.1c00661
DO - 10.1021/jacs.1c00661
M3 - Article
C2 - 33826332
AN - SCOPUS:85105028759
VL - 143
SP - 5610
EP - 5615
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 15
ER -