Results 201 to 210 of about 3,749 (233)
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Acta Crystallographica Section C Structural Chemistry, 2019
4,4′-{9,9′-Spirobi[10H-acridine]-10,10′-diyl}dibenzoic acid (L, C29H26N2O4) was designed and synthesized as a new donor–acceptor motif molecule. Due to the large dihedral angle between the planes of the carboxyphenyl group and the spiroacridine moiety, L possess thermally activated delayed fluorescence (TADF).
Xiu-Hui Ren +5 more
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4,4′-{9,9′-Spirobi[10H-acridine]-10,10′-diyl}dibenzoic acid (L, C29H26N2O4) was designed and synthesized as a new donor–acceptor motif molecule. Due to the large dihedral angle between the planes of the carboxyphenyl group and the spiroacridine moiety, L possess thermally activated delayed fluorescence (TADF).
Xiu-Hui Ren +5 more
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Advanced Optical Materials, 2021
AbstractIn most instances, thermally activated delayed fluorescence (TADF) emitters are incorporated into a suitable host matrix at low doping concentration in order to reduce emission quenching and to improve organic light‐emitting diode (OLED) efficiency. Here, a combination of molecular dynamics simulations and density functional theory calculations
Eunkyung Cho +3 more
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AbstractIn most instances, thermally activated delayed fluorescence (TADF) emitters are incorporated into a suitable host matrix at low doping concentration in order to reduce emission quenching and to improve organic light‐emitting diode (OLED) efficiency. Here, a combination of molecular dynamics simulations and density functional theory calculations
Eunkyung Cho +3 more
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The Journal of Physical Chemistry Letters, 2022
Organic light-emitting diodes (OLEDs) still face a significant challenge in finding blue thermally activated delayed fluorescence (TADF) emitters that can achieve narrowband emission and high efficiency. In this work, we successfully design and synthesize a novel kind of TADF emitters based on rigid sulfur/oxygen-bridged triarylboron acceptor for ...
Honglei Gao +9 more
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Organic light-emitting diodes (OLEDs) still face a significant challenge in finding blue thermally activated delayed fluorescence (TADF) emitters that can achieve narrowband emission and high efficiency. In this work, we successfully design and synthesize a novel kind of TADF emitters based on rigid sulfur/oxygen-bridged triarylboron acceptor for ...
Honglei Gao +9 more
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Macromolecular Chemistry and Physics, 2022
AbstractThermally activated delayed fuorescent (TADF) polymers are very suitable for fabricating highly efficient solution‐processed organic light emitting diodes (OLEDs). TADF homopolymers with simple structures are much preferred for preparation, but due to the triplet–triplet annnihilation, most TADF homopolymeric OLED exhibits lower external ...
Jiasen Zhang +7 more
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AbstractThermally activated delayed fuorescent (TADF) polymers are very suitable for fabricating highly efficient solution‐processed organic light emitting diodes (OLEDs). TADF homopolymers with simple structures are much preferred for preparation, but due to the triplet–triplet annnihilation, most TADF homopolymeric OLED exhibits lower external ...
Jiasen Zhang +7 more
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Donor-spiro-acceptor architecture for green thermally activated delayed fluorescence (TADF) emitter
Organic Electronics, 2020Abstract The rational molecular modification is an attractive area of interest to design new materials having promising results in organic light emitting diodes (OLEDs). Herein, a new green thermally activated delayed fluorescence (TADF) emitter, 2,7-bis(dimesitylboranyl)-9′,9′-dimethyl-9′H-spiro[fluorene-9,5′-quinolino[3,2,1-de]acridine] (ACS-BM ...
Aziz Khan +6 more
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The Journal of Physical Chemistry C, 2016
The increasing demand for high-performance organic light-emitting devices (OLEDs) based on thermally-activated delayed fluorescence (TADF) principle urgently requires to establish an efficient preparation strategy of high-performance TADF materials. Although considerable progress has been made in molecular design approaches for TADF materials, it still
Yuewei Zhang +8 more
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The increasing demand for high-performance organic light-emitting devices (OLEDs) based on thermally-activated delayed fluorescence (TADF) principle urgently requires to establish an efficient preparation strategy of high-performance TADF materials. Although considerable progress has been made in molecular design approaches for TADF materials, it still
Yuewei Zhang +8 more
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Chemical Communications, 2012
Efficient thermally activated delayed fluorescence (TADF) was developed in a material based on a phenoxazine (PXZ) electron donor unit and a 2,4,6-triphenyl-1,3,5-triazine (TRZ) electron acceptor unit. An organic light-emitting diode containing this novel TADF emitter layer was fabricated and exhibited a maximum external quantum efficiency of 12.5 ...
Hiroyuki, Tanaka +3 more
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Efficient thermally activated delayed fluorescence (TADF) was developed in a material based on a phenoxazine (PXZ) electron donor unit and a 2,4,6-triphenyl-1,3,5-triazine (TRZ) electron acceptor unit. An organic light-emitting diode containing this novel TADF emitter layer was fabricated and exhibited a maximum external quantum efficiency of 12.5 ...
Hiroyuki, Tanaka +3 more
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Thermally Activated Delayed Fluorescence (TADF) in Transition Metal Complexes
Thermally activated delayed fluorescence (TADF) is a temperature-dependent luminescence mechanism that allows the harvesting of both singlet and triplet excitons for fluorescence emission. Consequently, TADF-active compounds exhibit excellent photophysical properties, such as high luminescence efficiencies and long excited-state lifetimes.Mareen Stahlberger +2 more
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Angewandte Chemie International Edition, 2019
AbstractCurrent research on thermally activated fluorescence (TADF) emitters is mainly based on the molecular levels, while the aggregation states of TADF emitters are to be explored deeply. Now two multifunctional emitters are reported with simultaneous TADF, aggregation induced emission (AIE), and multicolor mechanochromic luminescence (MCL) features.
Kailu Zheng +4 more
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AbstractCurrent research on thermally activated fluorescence (TADF) emitters is mainly based on the molecular levels, while the aggregation states of TADF emitters are to be explored deeply. Now two multifunctional emitters are reported with simultaneous TADF, aggregation induced emission (AIE), and multicolor mechanochromic luminescence (MCL) features.
Kailu Zheng +4 more
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The Journal of Physical Chemistry A, 2018
The excited state properties of a series of binuclear NHetPHOS-Cu(I) complexes (NHetPHOS) have been investigated by means of density functional theory (DFT) and time-dependent DFT (TD-DFT). It is shown that experimental trends observed in powder, generally explored via S1 and T1 excited state energetics and S1 ⇔ T1 intersystem crossing (ISC) efficiency,
Ange Stoïanov +3 more
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The excited state properties of a series of binuclear NHetPHOS-Cu(I) complexes (NHetPHOS) have been investigated by means of density functional theory (DFT) and time-dependent DFT (TD-DFT). It is shown that experimental trends observed in powder, generally explored via S1 and T1 excited state energetics and S1 ⇔ T1 intersystem crossing (ISC) efficiency,
Ange Stoïanov +3 more
openaire +2 more sources