NDLI: A unique white electroluminescent one-dimensional europium(iii) coordination polymer

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Journal of Materials Chemistry C Vol - 3 Issue - 8

Journal of Materials Chemistry C Vol - 3 Issue - 7

Journal of Materials Chemistry C Vol - 3 Issue - 6

Journal of Materials Chemistry C Vol - 3 Issue - 5

Journal of Materials Chemistry C Vol -2

Journal of Materials Chemistry C Vol -1

A unique white electroluminescent one-dimensional europium(iii) coordination polymer

Content Provider	Royal Society of Chemistry (RSC)
Author	Wei, Ying Wang, Jianzhe Deng, Zhaopeng Huang, Wei Xu, Hui Xie, Guohua Xue, Qin
Copyright Year	2015
Abstract	Optoelectronic lanthanide coordination polymer is a formidable challenge, because of its labile structure during device fabrication and incident emission quenching. In this work, an efficient electroluminescent (EL) one-dimensional Eu3+ coordination polymer, named Eu-FDPO, is first achieved with structural feature of bidentate phosphine oxide ligand FDPO bridged Eu(DBM)3 complex units (DBM is dibenzoylmethane). X-ray diffraction analysis verified preserved one-dimensional-chain structure of spin-coated Eu-FDPO film on the basis of stable and flexible coordination between FDPO and Eu3+ ion, making its device fabrication feasible. Wolf-III type configuration endows Eu-FDPO with unique and preeminent physical properties, especially high photoluminescent quantum yield over 80% in film, suitable frontier molecular orbital energy levels for effective charge injection and peculiar intra-chain carrier transportation with high electron mobility close to 10−6 cm2 V−1 s−1, indicating the predominance of Wolf-III type lanthanide coordination polymers in optoelectronic applications to their Wolf-I and II type counterparts. It is shown that FDPO is crucial as an intermediate in optoelectronic processes to establish channels for efficient intra-chain energy and charge transfer. Consequently, double-layer spin-coated devices of Eu-FDPO realized the best EL performance among Eu3+ coordination polymers to date, including low driving voltage of 10.2 V at 100 cd m−2 and high luminance and efficiency with maxima of 215 cd m−2 and 0.71 cd A−1, respectively, as well as unique single-polymer white EL emission with favorable color coordinates of (0.38, 0.32).
Starting Page	1893
Ending Page	1903
Page Count	11
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	3
Issue Number	9
Journal	Journal of Materials Chemistry C
DOI	10.1039/c4tc02604g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	DBM FDPO Lanthanide Coordination polymer Electroluminescence Denticity Phosphine oxide Ligand Dibenzoylmethane X-ray crystallography Ion Photoluminescence Quantum Molecular orbital Electron mobility Optoelectronics
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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