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Issue 15, 2018
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An efficient and weak efficiency-roll-off near-infrared (NIR) polymer light-emitting diode (PLED) based on a PVK-supported Zn2+–Yb3+-containing metallopolymer

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Abstract

Based on copolymerization of NVK (N-vinylcarbazole) with an efficient Yb3+-centered NIR luminescent complex monomer [Zn(L1)(4-vinyl-Py)Yb(L2)3] (3) (H2L1 = N,N′-bis(salicylidene)cyclohexane-1,2-diamine, 4-vinyl-Py = 4-vinyl-pyridine, and HL2 = (Z)-3-methyl-1-phenyl-4-(2,2,2-trifluoro-1-hydroxyethylidene)-1H-pyrazol-5(4H)-one), the obtained single Zn2+–Yb3+-containing metallopolymer Poly(NVK-co-3) with an additional PVK (poly(N-vinylcarbazole))-to-Yb3+ Föster energy transfer was used as the emitting layer for the realization of NIR PLEDs. Moreover, among the Yb3+-centered NIR PLEDs, the superior performance (irradiances of 80.14–85.63 μW cm−2 and efficiencies of 0.05–0.058%) of the 75 : 1 feeding devices, the advantages of a low turn-on voltage (5–8 V), and the weak efficiency-roll-off relative to that of the small-molecule organo-Yb3+-based NIR OLEDs render the Yb3+-containing metallopolymer a new platform for PLEDs with wavelength above 900 nm.

Graphical abstract: An efficient and weak efficiency-roll-off near-infrared (NIR) polymer light-emitting diode (PLED) based on a PVK-supported Zn2+–Yb3+-containing metallopolymer

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Publication details

The article was received on 25 Nov 2017, accepted on 12 Mar 2018 and first published on 12 Mar 2018


Article type: Paper
DOI: 10.1039/C7TC05400A
Citation: J. Mater. Chem. C, 2018,6, 4114-4121
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    An efficient and weak efficiency-roll-off near-infrared (NIR) polymer light-emitting diode (PLED) based on a PVK-supported Zn2+–Yb3+-containing metallopolymer

    G. Fu, J. Guan, B. Li, L. Liu, Y. He, C. Yu, Z. Zhang and X. Lü, J. Mater. Chem. C, 2018, 6, 4114
    DOI: 10.1039/C7TC05400A

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