Spin-triplet excitons in 1,3-diphenyl-7-(fur-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl
Spin-triplet excitons in 1,3-diphenyl-7-(fur-2-yl)-1,4-dihydro-1,2,4-benzotriazin-4-yl
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DOI:
10.1039/c3cc44899a
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发表时间:
2013-01-01
影响因子:
4.9
通讯作者:
Koutentis, Panayiotis A.
中科院分区:
文献类型:
--
作者:
Constantinides, Christos P.;Carter, Emma;Koutentis, Panayiotis A.
7-(Fur-2-yl) benzotriazinyl 1 is the first example of a hydrazyl radical dimer with a thermally accessible triplet state. The triplet exciton (vertical bar D vertical bar = 0.018 cm(-1), vertical bar E vertical bar = 0.001 cm(-1)) was observed by solid-state VT-EPR spectroscopy between 5 and 140 K. VT crystallography, DFT calculations and magnetic susceptibility studies reveal a strong temperature dependence of the intra-dimer exchange interaction with J/k similar to -254 + 0.0007T(2).