Asymmetric anthracene derivatives as multifunctional electronic materials for constructing simplified and efficient non-doped homogeneous deep blue fluorescent OLEDs

Ye, Shaofeng; Wang, Yaxiong; Guo, Runda; Zhang, Qing; Lv, Xialei; Duan, Yalei; Leng, Panpan; Sun, Shuaiqiang; Wang, Lei

doi:10.1016/j.cej.2020.124694

Cited by 39 publications

(7 citation statements)

References 43 publications

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“…To further tune the emission color to the deep-blue region, Wang et al proposed an asymmetric bulky periphery enveloping strategy for constructing two bipolar deep-blue TTA emitters (43 and 44) by introducing a relatively weak electron-donating 1,5-diazacarbazole unit. 95 Both compounds 43 and 44 possessed deep-blue emissions at around 420−440 nm, high PLQYs of 93% and 96%, good thermostabilities, and high carrier mobilities. Nondoped homogeneous OLEDs employing these materials as emitters and electron transporting materials (ETM) exhibited high EL performance with narrow fwhms of 50 and 53 nm, CIE coordinates of (0.151, 0.066) and (0.157, 0.071), and maximum EQEs of 6.40% and 4.86%, respectively.…”

Section: And Oledsmentioning

confidence: 99%

Section: Triplet–triplet Annihilation Materials and Oledsmentioning

confidence: 99%

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Recent Advances in Triplet–Triplet Annihilation-Based Materials and Their Applications in Electroluminescence

Tao

Wong

2023

ACS Materials Lett.

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Efficient and stable blue organic light-emitting devices (OLEDs) represent one of the most important components in future solid-state lighting and full color displays. Although red and green OLEDs have been successfully commercialized, it remains challenging to realize blue OLEDs showing high efficiency and high stability simultaneously, restricting their commercialization. Triplet−triplet annihilation (TTA)-based materials have been emerging as a new category of electroluminescent or host materials with promising potential for highly efficient and stable blue devices due to their appealing photophysical properties (e.g., ability to generate emissive singlet excited states through TTA process, high photoluminescence quantum yield, ease of molecular design, etc.). Recently, research on TTA-based materials toward high-performance blue OLEDs has received an increasing attention. In this review, recent research advances on the molecular design strategies, photophysical properties of TTA-based materials (both blue emitters and host materials), mechanism of TTA-based electroluminescence, as well as their OLED applications are presented comprehensively. Moreover, potential perspectives with future research opportunities in this field are also described. We believe that the emerging TTA-based materials will bring more opportunities for developing a large family of novel photofunctional materials showing appealing and tunable photophysical properties, thus providing new opportunities for high-efficiency and stable blue electroluminescence in the future.

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Section: And Oledsmentioning

confidence: 99%

Section: Triplet–triplet Annihilation Materials and Oledsmentioning

confidence: 99%

Recent Advances in Triplet–Triplet Annihilation-Based Materials and Their Applications in Electroluminescence

Tao

Wong

2023

ACS Materials Lett.

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“…[27][28][29][30][31] However, there are only a few reports on efficient deep-blue non-doped OLEDs showing an EQE of over 5% and a CIEy coordinate under 0.065. [32][33][34][35][36] As is known, fluorescent/phosphorescent hybrid white OLEDs (WOLEDs) combining stable blue fluorophores with efficient green-red/yellow phosphors have become one of the most promising tools, considering their potential for high efficiency and long lifetime without utilizing unstable blue phosphors. [37][38][39] The triplet state (T 1 ) energy of the blue fluorophore has an important effect on the device structure and EL performance of hybrid WOLEDs.…”

Section: Introductionmentioning

confidence: 99%

“…27–31 However, there are only a few reports on efficient deep-blue non-doped OLEDs showing an EQE of over 5% and a CIEy coordinate under 0.065. 32–36…”

Section: Introductionmentioning

confidence: 99%

A linear deep-blue bipolar fluorescent material with the CIEy < 0.065 serving as the emitter and host for high-performance monochromatic and hybrid white OLEDs

Peng

Huo

et al. 2022

J. Mater. Chem. C

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“…They can be divided into two categories: conjugated PDs and nonconjugated PDs. Conventional fluorescent conjugated PDs generally contain classic chromophores or extended π-systems, [1,2] inevitably accompanied by the use of additional organic reagents and inherent high toxicities, [5][6][7] which limit further development and application. Interestingly, some of the abundant, nontoxic compounds without π-conjugated chromophores could also emit bright fluorescence, such as natural chitosan, [8] bovine serum albumin, [9] cellulose, [10] poly(amidoamine) dendrimers, [11] hyperbranched poly(amine ester), [12] and polyacrylonitrile.…”

Section: Introductionmentioning

confidence: 99%

Color‐tunable and bright nonconjugated fluorescent polymer dots and fast photodegradation of dyes under visible light

et al. 2021

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Nonconjugated polymer dots (PDs) without largely conjugated structures entitle their advantages such as environment friendliness, nontoxicity, and intrinsic fluorescence. However, color-tunable PDs remain a challenge. Herein, polyvinyl pyrrolidone (PVP) and ascorbic acid (AA) are used to synthesize nonconjugated PDs, namely, PA PDs with intensive blue emission. The introduction of a third component, m-phenylenediamine (MPD), redshifted the emission to green. The asprepared color-tunable blue to green emissive PDs exhibit excellent properties, whether in solution or in solid state, originated from the mechanism of clusteringtriggered emission (CTE) induced by the overlap of electron-rich atoms, the strong inter/intrachain interaction. The quantum yields of blue and green PDs reached up to 15.07% and 28.22%, respectively. Furthermore, PA PDs were successfully applied to the highly efficient photocatalytic degradation for dyes: methylene blue (MB) and methyl orange (MO) were degraded by 89.9% and 93.8% within 20 min under visible light, respectively.

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Asymmetric anthracene derivatives as multifunctional electronic materials for constructing simplified and efficient non-doped homogeneous deep blue fluorescent OLEDs

Cited by 39 publications

References 43 publications

Recent Advances in Triplet–Triplet Annihilation-Based Materials and Their Applications in Electroluminescence

Recent Advances in Triplet–Triplet Annihilation-Based Materials and Their Applications in Electroluminescence

A linear deep-blue bipolar fluorescent material with the CIEy < 0.065 serving as the emitter and host for high-performance monochromatic and hybrid white OLEDs

Color‐tunable and bright nonconjugated fluorescent polymer dots and fast photodegradation of dyes under visible light

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