First Oxadiazole-Functionalized Terbium(III) <i>β</i>-Diketonate for Organic Electroluminescence

Wang, Jiafu; Wang, Ruiyao; Yang, Jun; Zheng, Zhiping; Carducci, Michael D.; Cayou, Troy; Peyghambarian, N.; Jabbour, Ghassan E.

doi:10.1021/ja004113u

Cited by 248 publications

(108 citation statements)

References 10 publications

(8 reference statements)

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“…The coordination polyhedron is best described as square antiprismatic. This compound was used as an emitting material, and a bright and highly efficient green-emitting LED was fabricated [604].…”

Section: Reactions Of Substituentsmentioning

confidence: 99%

Oxadiazoles

Romeo¹,

Chiacchio²

2011

Modern Heterocyclic Chemistry

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Section: Reactions Of Substituentsmentioning

confidence: 99%

Oxadiazoles

Romeo¹,

Chiacchio²

2011

Modern Heterocyclic Chemistry

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“…[18] Compared with phen derivatives, TPPO exhibits good electron-transport ability and strong coordination ability. However, when using TPPO in Eu III complexes, their EL performance, such as brightness and efficiency of the corresponding OLED devices, was very limited.…”

Section: A C H T U N G T R E N N U N G (Tta) 3 ] (1) [Eua C H T U N mentioning

confidence: 99%

Highly Improved Electroluminescence from a Series of Novel Eu^III Complexes with Functional Single‐Coordinate Phosphine Oxide Ligands: Tuning the Intramolecular Energy Transfer, Morphology, and Carrier Injection Ability of the Complexes

Yin

Huang

2007

Chemistry A European J

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The functional single-coordinate phosphine oxide ligands (4-diphenylaminophenyl)diphenylphosphine oxide (TAPO), (4-naphthalen-1-yl-phenylaminophenyl)diphenylphosphine oxide (NaDAPO), and 9-[4-(diphenylphosphinoyl)phenyl]-9H-carbazole (CPPO), as the direct combinations of hole-transporting moieties, and electron-transporting triphenylphosphine oxide (TPPO) were designed and synthesized (amines or carbazole), together with their Eu(III) complexes [Eu(tapo)(2)(tta)(3)] (1), [Eu(nadapo)(2)(tta)(3)] (2), and [Eu(cppo)(2)(tta)(3)] (3; TTA: 2-thenoyltrifluoroacetonate). The investigation indicated that by taking advantage of the modification inertia of the phosphine oxide ligands, the direct introduction of the hole-transport groups as chromophore made TAPO, NaDAPO, and CPPO obtain the most compact structure and mezzo S(1) and T(1) energy levels, which improved the intramolecular energy transfer in their Eu(III) complexes. The amorphous phase of 1-3 proved the weak intermolecular interaction, which resulted in extraordinarily low self-quenching of the complexes. The excellent double-carrier transport ability of the ligands was studied with Gaussian calculations, and the bipolar structure of TAPO and CPPO was proved. The great improvement of the double-carrier transport ability of 1-3 was shown by cyclic voltammetry. Their HOMO and LUMO energy levels of around 5.3 and 3.0 eV, respectively, are the best results for Eu(III) complexes reported so far. A single-layer organic light-emitting diode of 2 had the impressive brightness of 59 cd m(-2) which, to the best of our knowledge, is the highest reported so far. Both of the four-layer devices based on pure 1 and 2 had a maximum brightness of more than 1000 cd m(-2), turn-on voltages lower than 5 V, maximum external quantum yields of more than 3 % and excellent spectral stability.

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“…In many devices the emissive layer consists of a polymer such as poly(N-vinylcarbazole) (PVK) doped with a transition-metal complex, which acts as the charge-recombination and emission center. [5,6] Maximization of the brightness of a device is a key consideration in the production of OLEDs, which is why phosphorescent metal complexes are favored over fluorescent organic materials in many situations. [7] The dopant used also greatly affects the wavelength and broadness of the emission, as well as the efficiency of the device, so that an OLED may be tuned by appropriate selection of the metal center and ligand(s).…”

Section: Dedicated To Professor John J Mcgarveymentioning

confidence: 99%

Synthesis and Characterization of a Multicomponent Rhenium(I) Complex for Application as an OLED Dopant

et al. 2006

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First Oxadiazole-Functionalized Terbium(III) β-Diketonate for Organic Electroluminescence

Cited by 248 publications

References 10 publications

Oxadiazoles

Oxadiazoles

Highly Improved Electroluminescence from a Series of Novel Eu^III Complexes with Functional Single‐Coordinate Phosphine Oxide Ligands: Tuning the Intramolecular Energy Transfer, Morphology, and Carrier Injection Ability of the Complexes

Synthesis and Characterization of a Multicomponent Rhenium(I) Complex for Application as an OLED Dopant

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First Oxadiazole-Functionalized Terbium(III) β-Diketonate for Organic Electroluminescence

Cited by 248 publications

References 10 publications

Oxadiazoles

Oxadiazoles

Highly Improved Electroluminescence from a Series of Novel EuIII Complexes with Functional Single‐Coordinate Phosphine Oxide Ligands: Tuning the Intramolecular Energy Transfer, Morphology, and Carrier Injection Ability of the Complexes

Synthesis and Characterization of a Multicomponent Rhenium(I) Complex for Application as an OLED Dopant

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Highly Improved Electroluminescence from a Series of Novel Eu^III Complexes with Functional Single‐Coordinate Phosphine Oxide Ligands: Tuning the Intramolecular Energy Transfer, Morphology, and Carrier Injection Ability of the Complexes