Scavenging of galvinoxyl spin 1/2 radicals in the processing of organic spintronics

Cho, Jung Min; Song, Chang Eun; Moon, Sang‐Jin; Shin, Won Suk; Hong, Seunghun; Kim, Sun Hee; Cho, Sang‐Hee; Lee, Jung-Keun

doi:10.1016/j.orgel.2018.01.002

Cited by 3 publications

(1 citation statement)

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“…Due to their unique unpaired electron structure [ 16 ], stable organic radicals possess fascinating optical, electronic, and magnetic properties. Additionally, as a result, they have been widely used in the fields of polarization optics [ 17 , 18 , 19 , 20 ], organic optoelectronics [ 21 , 22 , 23 , 24 ], spintronics [ 25 , 26 , 27 , 28 ], and molecular magnetism [ 29 , 30 , 31 , 32 ]. However, in most cases, organic radicals have difficulty remaining stable under ambient conditions.…”

Section: Introductionmentioning

confidence: 99%

Research Progress on Triarylmethyl Radical-Based High-Efficiency OLED

Luo

Rong

et al. 2022

Molecules

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Perchlorotrityl radical (PTM), tris (2,4,6-trichlorophenyl) methyl radical (TTM), (3,5-dichloro-4-pyridyl) bis (2,4,6 trichlorophenyl) methyl radical (PyBTM), (N-carbazolyl) bis (2,4,6-trichlorophenyl) methyl radical (CzBTM), and their derivatives are stable organic radicals that exhibit light emissions at room temperature. Since these triarylmethyl radicals have an unpaired electron, their electron spins at the lowest excited state and ground state are both doublets, and the transition from the lowest excited state to the ground state does not pose the problem of a spin-forbidden reaction. When used as OLED layers, these triarylmethyl radicals exhibit unique light-emitting properties, which can increase the theoretical upper limit of the OLED’s internal quantum efficiency (IQE) to 100%. In recent years, research on the luminescent properties of triarylmethyl radicals has attracted increasing attention. In this review, recent developments in these triarylmethyl radicals and their derivatives in OLED devices are introduced.

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