Synergistic effects of hydrogen bonds and the hybridized excited state observed for high-efficiency, deep-blue fluorescent emitters with narrow emission in OLED applications

2019 ◽  
Vol 7 (18) ◽  
pp. 5461-5467 ◽  
Author(s):  
Xu Qiu ◽  
Yuwei Xu ◽  
Cong Wang ◽  
Muddasir Hanif ◽  
Jiadong Zhou ◽  
...  
Keyword(s):  
Excited State ◽  
Hydrogen Bonds ◽  
High Efficiency ◽  
Synergistic Effects ◽  
Highly Efficient ◽  
Deep Blue ◽  
Narrow Emission

A highly efficient deep-blue OLED with narrow emission induced by the synergistic effects of H-bonds and the HLCT excited-state of TPA-PPI-OH was achieved.

Novel Carbazole-based Multifunctional Materials with Hybridized Local and Charge-Transfer Excited State Acting as Deep Blue Emitters and Phosphorescent Hosts for Highly Efficient Organic Light-Emitting Diodes

2021 ◽  
Author(s):  
Haitao Zhou ◽  
Mengna Yin ◽  
Zhenhong Zhao ◽  
Yanqin Miao ◽  
Xin Jin ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Multifunctional Materials ◽  
Light Emitting ◽  
Highly Efficient ◽  
Deep Blue ◽  
Organic Light ◽  
Blue Emitters

In this work, two carbazole- and benzo[d]oxazole-based novel multifunctional materials with hybridized local and charge-transfer (HLCT) characteristic, namely OCI and OCT, which could act as deep-blue fluorophors and phosphorescent hosts,...

Efficient deep-blue non-doped organic light-emitting diode with improved roll-off of efficiency based on hybrid local and charge-transfer excited state

RSC Advances ◽  
2016 ◽  
Vol 6 (74) ◽  
pp. 70085-70090 ◽  
Author(s):  
Haichao Liu ◽  
Qing Bai ◽  
Weijun Li ◽  
Yachen Guo ◽  
Liang Yao ◽  
...  
Keyword(s):  
Excited State ◽  
High Efficiency ◽  
Light Emitting Diode ◽  
Blue Emission ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Deep Blue ◽  
Organic Light ◽  
Slow Roll ◽  
Donor Acceptor

Acceptor–donor–acceptor triphenylamine–phenanthroimidazole derivate (TPA–2PPI) servers as an emitter, whose device exhibits deep-blue emission, high efficiency and slow roll-off of efficiency.

scholarly journals A highly efficient solution and solid state ESIPT fluorophore and its OLEDs application

2021 ◽  
Author(s):  
Pei Yu ◽  
Virgile Trannoy ◽  
Anne Léaustic ◽  
Sophie Gadan ◽  
Régis Guillot ◽  
...  
Keyword(s):  
Excited State ◽  
Solid State ◽  
Hydrogen Bonds ◽  
Dicarboxylic Acid ◽  
Ethyl Ester ◽  
Efficient Solution ◽  
Acid Ethyl Ester ◽  
Intramolecular Hydrogen Bonds ◽  
Highly Efficient ◽  
Intramolecular Hydrogen

We present herein the synthesis and the photophysics of 2,2’-bipyridine-3,3’-diol-5,5’-dicarboxylic acid ethyl ester (BP(OH)2DCEt2), an excited state intramolecular proton tranfer (ESIPT)-based fluorophore featuring two identical intramolecular hydrogen bonds. BP(OH)2DCEt2 emits...

A Twisting Donor-Acceptor Molecule with an Intercrossed Excited State for Highly Efficient, Deep-Blue Electroluminescence

2012 ◽  
Vol 22 (13) ◽  
pp. 2797-2803 ◽  
Author(s):  
Weijun Li ◽  
Dandan Liu ◽  
Fangzhong Shen ◽  
Dongge Ma ◽  
Zhiming Wang ◽  
...  
Keyword(s):  
Excited State ◽  
Acceptor Molecule ◽  
Highly Efficient ◽  
Deep Blue ◽  
Donor Acceptor

Tuning the Excited State of Tetradentate Pd(II) Complexes for Highly Efficient Deep-Blue Phosphorescent Materials

2020 ◽  
Vol 59 (18) ◽  
pp. 13502-13516
Author(s):  
Guijie Li ◽  
Jianbing Zheng ◽  
Xiangdong Zhao ◽  
Tyler Fleetham ◽  
Yun-Fang Yang ◽  
...  
Keyword(s):  
Excited State ◽  
Highly Efficient ◽  
Deep Blue ◽  
Blue Phosphorescent

Cyanophenyl spiro[acridine-9,9′-fluorene]s as simple structured hybridized local and charge-transfer-based ultra-deep blue emitters for highly efficient non-doped electroluminescent devices (CIEy 〈 0.05)

2021 ◽  
Author(s):  
Taweesak Sudyoadsuk ◽  
Sujinda Petdee ◽  
Chokchai Kaiyasuan ◽  
Chaiyon Chaiwai ◽  
Praweena Wongkaew ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Quantum Efficiency ◽  
Internal Quantum Efficiency ◽  
Electroluminescent Devices ◽  
Highly Efficient ◽  
Deep Blue ◽  
Successful Approach ◽  
Blue Emitters

The hybridized local and charge-transfer (HLCT) excited state is a successful approach to accomplish both high external and internal quantum efficiency. To attain deep blue emissive HLCT emitters, two cyanophenyl...

Solvent modulated excited state processes of push–pull molecule with hybridized local excitation and intramolecular charge transfer character

2019 ◽  
Vol 21 (7) ◽  
pp. 3894-3902 ◽  
Author(s):  
Hongwei Song ◽  
Kang Wang ◽  
Zhuoran Kuang ◽  
Yong Sheng Zhao ◽  
Qianjin Guo ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
High Efficiency ◽  
Intramolecular Charge Transfer ◽  
Local Excitation ◽  
Highly Efficient

Recently, a type of synthetic highly efficient OLED molecule based on a hybridized local excitation and charge transfer (HLCT) character has received much attention as a potential high-efficiency fluorescent OLED material.

scholarly journals Pyrimidine-based twisted donor–acceptor delayed fluorescence molecules: a new universal platform for highly efficient blue electroluminescence

2017 ◽  
Vol 8 (2) ◽  
pp. 953-960 ◽  
Author(s):  
In Seob Park ◽  
Hideaki Komiyama ◽  
Takuma Yasuda
Keyword(s):  
High Efficiency ◽  
Delayed Fluorescence ◽  
Thermally Activated Delayed Fluorescence ◽  
Thermally Activated ◽  
Highly Efficient ◽  
Deep Blue ◽  
Donor Acceptor

High-efficiency deep blue thermally activated delayed fluorescence (TADF) emitters consisting of acridan–pyrimidine donor–acceptor motifs are developed.

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