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A highly luminescent tetranuclear copper(I) compound, ]Cu 4(C≡CPh) 4L 2] (Cu 4) ]L = 1,8-his(diphenylphosphino)3,6-dioxaoctane], was used as an emitting material for fabrication of light-emitting diode (LED) devices. The Cu 4 doped poly(vinyl carbazole) device displays electroluminescence (λ(max) = 520 nm) that is similar in energy to the photoluminescence recorded in dichloromethane. The device characteristics and mechanism of electroluminescence have been studied.
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Ma et al. (1999) studied this question.
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