Novel cyclometalated platinum (II) complex containing carrier-transporting groups: Synthesis, luminescence and application in single dopant white PLEDs

Liang, Aihui; Li, Yanhu; Zhu, Weiguo; Wang, Yafei; Huang, Fei; Wu, Hongbin; Cao, Yong

doi:10.1016/j.dyepig.2012.11.006

Cited by 19 publications

(6 citation statements)

References 54 publications

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“…The key approach to realize high efficiency WOLEDs is to utilize both singlet and triplet excitons for light emission, which can allow for a conversion of up to 100% of injected charges into emitted photons and lead to a theoretical internal quantum efficiency of unity . To address this point, much effort has been focused on physically blending phosphorescent dopants with fluorescent host materials to attain hybrid WPLEDs by utilizing both high‐energy singlet excitons and low‐energy triplet excitons, or blending phosphorescent dyes into non‐fluorescent host materials to achieve white emission based on all‐phosphorescent emitters . The former case is desirable for obtaining efficient WPLEDs with high color quality and long‐term stability, while the latter one is beneficial for achieving high efficiency.…”

Section: Device Engineering For Wpledsmentioning

confidence: 99%

White Polymer Light‐Emitting Devices for Solid‐State Lighting: Materials, Devices, and Recent Progress

et al. 2014

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White polymer light-emitting devices (WPLEDs) have become a field of immense interest in both scientific and industrial communities. They have unique advantages such as low cost, light weight, ease of device fabrication, and large area manufacturing. Applications of WPLEDs for solid-state lighting are of special interest because about 20% of the generated electricity on the earth is consumed by lighting. To date, incandescent light bulbs (with a typical power efficiency of 12-17 lm W(-1) ) and fluorescent lamps (about 40-70 lm W(-1) ) are the most widely used lighting sources. However, incandescent light bulbs convert 90% of their consumed power into heat while fluorescent lamps contain a small but significant amount of toxic mercury in the tube, which complicates an environmentally friendly disposal. Remarkably, the device performances of WPLEDs have recently been demonstrated to be as efficient as those of fluorescent lamps. Here, we summarize the recent advances in WPLEDs with special attention paid to the design of novel luminescent dopants and device structures. Such advancements minimize the gap (for both efficiency and stability) from other lighting sources such as fluorescent lamps, light-emitting diodes based on inorganic semiconductors, and vacuum-deposited small-molecular devices, thus rendering WPLEDs equally competitive as these counterparts currently in use for illumination purposes.

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Section: Device Engineering For Wpledsmentioning

confidence: 99%

White Polymer Light‐Emitting Devices for Solid‐State Lighting: Materials, Devices, and Recent Progress

et al. 2014

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“…Synthesis of the platinum(II) μ‐dichloro‐bridged dimers have been derived following a modified method of Lewis . To a solution of 5,7‐diphenylpyrazolo[1,5‐a]pyrimidine derivatives ligand (L 1 ‐L 5 ) (58.6 mg, 0.4 mmol) and K 2 PtCl 4 (83 mg, 0.2 mmol) in ethoxyethanol, stirred vigorously under nitrogen (N 2 ) atm.…”

Section: Methodsmentioning

confidence: 99%

Synthesis, characterization and biological application of cyclometalated heteroleptic platinum(II) complexes

Lunagariya

Thakor

Patel

et al. 2017

Applied Organom Chemis

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A series of square planar cyclometalated heteroleptic platinum(II) complexes of the type [(C^N)Pt(O^O)] [where, O^O is a β‐diketonato ligand of acetylacetone (acac), C^N = cyclometalating 7‐(4‐fluorophenyl)‐5‐phenylpyrazolo[1,5‐a]pyrimidine (L1), 7‐(4‐chlorophenyl)‐5‐phenylpyrazolo[1,5‐a]pyrimidine (L2), 7‐(4‐bromophenyl)‐5‐phenylpyrazolo[1,5‐a]pyrimidine (L3), 7‐(4‐methoxyphenyl)‐5‐phenylpyrazolo[1,5‐a]pyrimidine (L4), 5‐phenyl‐7‐(p‐tolyl)pyrazolo[1,5‐a]pyrimidine (L5)] have been design, synthesized and characterized. All compounds have been screened for biological studies like in vitro antibacterial, in vitro cytotoxicity, cellular level cytotoxicity, absorption titration, viscosity measurements, fluorescence quenching analysis, molecular docking and DNA nuclease. The intrinsic binding constants (Kb) of compounds with HS‐DNA has been obtained in range of 2.892–0.242 × 105 M−1. All the compounds bound with HS DNA by partial intercalative mode of binding. MIC study has been carried out against Gram(+ve) and Gram(−ve) bacterial species. In vitro cytotoxicity against brine shrimp lethality bioassay has been also carried out. The LC50 values of the ligands and complexes have been found in range of 56.49–120.22 μg/mL and 6.71–11.96 μg/mL, respectively.

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“…To overcome the above defects, WOLEDs with single emissive layer (SEL) and single emissive dopant have attracted much attention recently due to their simple process technique and pure white emission. Therefore, great efforts have been focused on the excimer-based white emission from dopants, especially platinum complexes, and their SEL WOLEDs [20][21][22][23][24][25]. For instance, Jabbour et al demonstrated a simple platinum (II)[2-(4 0 ,6 0 -difluorophenyl)pyridinato-N,C 2 0 ]](2,4-pentane-dionato) in the excimer-based white OLEDs with a commission internationale de l'éclairage (CIE) chromaticity coordinate of (0.46, 0.47) [26].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and optoelectronic properties of novel fluorene-bridged dinuclear cyclometalated iridium (III) complex with A–D–A framework in the single-emissive-layer WOLEDs

Novel cyclometalated platinum (II) complex containing carrier-transporting groups: Synthesis, luminescence and application in single dopant white PLEDs

Cited by 19 publications

References 54 publications

White Polymer Light‐Emitting Devices for Solid‐State Lighting: Materials, Devices, and Recent Progress

White Polymer Light‐Emitting Devices for Solid‐State Lighting: Materials, Devices, and Recent Progress

Synthesis, characterization and biological application of cyclometalated heteroleptic platinum(II) complexes

Synthesis and optoelectronic properties of novel fluorene-bridged dinuclear cyclometalated iridium (III) complex with A–D–A framework in the single-emissive-layer WOLEDs

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