Versatile azaryl-ketone-based blue AIEgens for efficient organic light-emitting diodes

Zhou, Lu; Chen, Wen‐Cheng; Tan, Jihua; Ji, Shaomin; Yang, Qingdan; Mu, Yingxiao; Zhang, Hao‐Li; Zhao, Jingwei; Huo, Yanping; Lee, Chun‐Sing

doi:10.1016/j.dyepig.2021.109729

Cited by 16 publications

(11 citation statements)

References 48 publications

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“…Furthermore, the obtained pBZ-DPA was used as the host for the red luminophore bis(2-methyldibenzo[f,h]quinoxaline)(acetylacetonate) iridium(III) (Ir(MDQ) 2 (acac)) due to its wide energy gap. The obtained OLEDs exhibited red fluorescence with external quantum efficiencies of about 20% [31].…”

Section: Electroluminescencementioning

confidence: 99%

“…Zhou et al [31] described a D-A blue phosphor based on phenyl(3-phenylimidazo[1,2-a]pyridin-2-yl)methanone (pBZ), an azarylketone derivative (Fig. 9a).…”

Section: Electroluminescencementioning

confidence: 99%

“…Muthusankar et al [44] presented the results of their research, in which they obtained a glucose biosensor with a 5 s response time, in the concentration range from 1 to 10 µM, Scheme 1 Synthetic route of DPA-PFBP-A and DPA-PFBP-B [37] Fig. 9 a Chemical structure of azaryl ketone (pBZ) [31]. b Chemical structure of (4-(diphenylamino) phenyl) (3-phenylimidazo [1,2-a] pyridin-2-yl) methanone (pBZ-DPA) [31] Fig.…”

Section: Electrofluorochromismmentioning

confidence: 99%

“…9 a Chemical structure of azaryl ketone (pBZ) [31]. b Chemical structure of (4-(diphenylamino) phenyl) (3-phenylimidazo [1,2-a] pyridin-2-yl) methanone (pBZ-DPA) [31] Fig. 10 Chemical structure of EFC polymer [42] with a sensitivity of 0.51 µA/µM.…”

Section: Electrofluorochromismmentioning

confidence: 99%

“…It determines the color that will be emitted and the light flux. In addition, the electrode contains a transparent anode and a metal cathode, a hole injection layer, a hole transport layer, an electron transport layer, and an electron injection layer [31]. The disadvantage of OLEDs is the low external quantum efficiency of 20-25% [32], so reducing the amount of light trapped inside the device is a task for future years of optoelectronics research.…”

Section: Introductionmentioning

confidence: 99%

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Derivatives of diphenylamine and benzothiadiazole in optoelectronic applications: a review

2022

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Light-emitting conjugated organic compounds have found special interest among researchers. Because of their adjustable optoelectronic properties they can be applied in e.g. field-effect transistors, sensors, light-emitting diodes or photovoltaic cells. In order to develop high-performance systems, it is important to understand the relationship between the structure and the photophysical properties of the material used. One of the employed strategies is to decrease the band gap of conjugated compounds, often achieved through a “donor–acceptor” approach. One of the popular groups applied as an electron-accepting unit are benzothiadiazoles, while diphenylamine exhibits good electron-donating ability. The functional groups can affect the energy levels of materials, influencing the color of the light emitted. This work presents a review of research focused on the structure-properties relationship of diphenylamine and benzothiadiazole derivatives with optoelectronic applications.

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Section: Electroluminescencementioning

confidence: 99%

“…Zhou et al [31] described a D-A blue phosphor based on phenyl(3-phenylimidazo[1,2-a]pyridin-2-yl)methanone (pBZ), an azarylketone derivative (Fig. 9a).…”

Section: Electroluminescencementioning

confidence: 99%

Section: Electrofluorochromismmentioning

confidence: 99%

Section: Electrofluorochromismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Derivatives of diphenylamine and benzothiadiazole in optoelectronic applications: a review

2022

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Electrochemical Decarboxylative Coupling of N‐Substituted Glycines under Air: Access to C3‐Aminomethylated Imidazo[1,2‐a]pyridines

Wang

et al. 2022

Adv Synth Catal

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An electrochemical decarboxylative aminomethylation reaction of imidazo[1,2a]pyridines with various N-substituted glycines in acetonitrile at room temperature has been described. The reaction could be conducted under light-free, catalyst-free, oxidant-free, and air conditions, affording the C3-aminomethylated imidazo[1,2a]pyridines in good to high yields. Remarkably, Naryl, N,N-dialkyl, and N-alkyl-N-aryl glycines are all well-tolerated in this easily handled protocol, which further expands the chemical space of bioactive imidazo[1,2-a]pyridine derivatives.

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Complex‐mediated nucleophilic aromatic substitution with aryl nitriles to realize intramolecular flapping‐restricted D‐A AIEgens for bioimaging

Liu,

Gong

et al. 2024

Smart Molecules

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Donor‐acceptor (D‐A) compounds are particularly important in optoelectronic and biological applications. However, they are normally synthesized in the presence of transition metal catalysts. Herein, we report a metal‐free method by a complex‐mediated nucleophilic aromatic substitution of aryl nitriles with amines. The method can lead to rich D‐A type aggregation‐induced emission luminogens (AIEgens) with tunable properties. They emit from deep‐blue to yellow‐green and possess high photoluminescence quantum yields up to 70.5% in the aggregate state. Interestingly, the suppression of intramolecular flapping is proved to play an indispensable role in the AIE behavior, which is different from the mechanism met in other AIEgens. Moreover, the biocompatible AIEgens possess specific staining of lipid droplets in HeLa cells and the superiority of identifying fatty liver over traditional Oil Red O staining is exhibited.

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Versatile azaryl-ketone-based blue AIEgens for efficient organic light-emitting diodes

Cited by 16 publications

References 48 publications

Derivatives of diphenylamine and benzothiadiazole in optoelectronic applications: a review

Derivatives of diphenylamine and benzothiadiazole in optoelectronic applications: a review

Electrochemical Decarboxylative Coupling of N‐Substituted Glycines under Air: Access to C3‐Aminomethylated Imidazo[1,2‐a]pyridines

Complex‐mediated nucleophilic aromatic substitution with aryl nitriles to realize intramolecular flapping‐restricted D‐A AIEgens for bioimaging

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