Results 111 to 120 of about 9,088 (259)

Dopant Deuteration Enables Long‐lived Room‐temperature Phosphorescence

Aggregate
Organic host–guest systems exhibiting room‐temperature phosphorescence (RTP) hold great promise for sensing, encryption, and bioimaging. However, achieving both long lifetimes and high efficiency remains challenging, as enhanced spin–orbit coupling (SOC)
Zheng Yin, Qi Sun, Zhu Wu, Yincai Xu, Zongliang Xie, Bin Liu   +5 more
doaj   +1 more source

Flexible white thermally activated delayed fluorescence polymer with alkyl spacer and side‐chain encapsulation for efficient solution‐processed white organic light‐emitting diodes

FlexMat, EarlyView.
A “gemstone‐necklace” FASCE strategy synthesizes single‐component white polymers (PTF‐Qx) by alternating rigid TADF units with flexible alkyl chains. The non‐doped rigid device achieves a high EQE of 15.66% with stable white emission (CIE: 0.36, 0.46).
Wenhao Zhang, Hongyu Zhuang, Xinxin Ban, Shilong Feng, Tao Xu, Youqiang Qian, Shun Hu, Aiyun Zhu   +7 more
wiley   +1 more source

Quantum Chemistry for Room Temperature Phosphorescence and TADF

, 2017
This data includes some quantum chemistry calculations, performed with Qchem for the Room Temperature Phosphorescence and TADF ...
TJ Penfold (7835528)
core   +1 more source

Spirobifluorene fusion in multiple resonance frameworks enables efficient pure‐red OLEDs with narrowband emission and suppressed efficiency roll‐off

FlexMat, EarlyView.
An orthogonal spirobifluorene‐fusion strategy is introduced for B/N/O‐alternated MR frameworks, enabling improved kRISC (5.46 × 103 s−1), high ΦPL (97%), and narrow‐band pure‐red emission. Vacuum‐evaporated OLEDs incorporating this emitter achieve an EQEmax >40% (FWHM = 36 nm) and exhibit exceptionally low efficiency roll‐off at high luminance ...
Yan‐Yun Jing, Han Wu, Xiaoling Xu, Sijie Xian, Jingsheng Miao, Xiaojun Yin, Chuluo Yang, Xiaosong Cao   +7 more
wiley   +1 more source

Heteroatom location‐ and orientation mode‐dependent reverse intersystem crossing rate in multiple resonance emitters

FlexMat, EarlyView.
By constructing two pairs of isomers with different heteroatom anchoring positions, the relationship between heteroatom location and orientation mode and reverse intersystem crossing rate constant (kRISC) in multiple resonance (MR) emitters is systematically investigated.
Tingting Huang, Yincai Xu, Yupei Qu, Xinliang Cai, Jinbei Wei, Yue Wang   +5 more
wiley   +1 more source

Recent progress in triplet energy transfer systems toward organic afterglow materials

Communications Chemistry
Organic room-temperature phosphorescence (RTP) has shown potential applications in the fields of biomedical imaging, chemical sensing, anti-counterfeiting, and encryption.
Kaiwen Wu, Dan Liu, Lixun Zhu, Tianhao Wu, Yanning Xu, Chenghan He, Yu Xiong, Zheng Zhao, Ben Zhong Tang   +8 more
doaj   +1 more source

o‐Carborane‐based multi‐resonance thermally activated delayed fluorescence emitter exhibits highly efficient and multifunctional electroluminescence

FlexMat, EarlyView.
By strategically incorporating boron/nitrogen multi‐resonance (B/N‐MR) core into the o‐carborane unit, perfect exciton utilization can be achieved as well as exhibiting stimuli‐responsive properties. The resulting DBN‐oCb‐based organic light‐emitting diode (OLED) demonstrated an impressive external quantum efficiency of 22.3%, the highest reported for ...
Jiasen Zhang, Denghui Liu, Mengke Li, Tong Wang, Yuanyuan Meng, Deli Li, Shi‐Jian Su, Wei Li, Ziyi Ge   +8 more
wiley   +1 more source

Phosphorescent PdII–PdII Emitter‐Based Red OLEDs with an EQEmax of 20.52%

Advanced Science
Three dinuclear Pd(II) complexes (1, 2, and 3) with intense red phosphorescence at room temperature are here synthesized using strong ligand field strength compounds.
Lige Qiao, Xiangjun Kong, Kechun Li, Lequn Yuan, Yunjun Shen, Yuzhen Zhang, Liang Zhou   +6 more
doaj   +1 more source

Mechano-induced persistent room-temperature phosphorescence from purely organic molecules

, 2018
Interesting purely organic persistent room-temperature phosphorescence induced by not only photoirradiation but also mechanical action has been presented.
Liu, Siwei, Zhan Yang, Zhiyong Yang, Mao, Zhu, Shizhao Zheng, Zhao, Juan, Xu, Jiarui, Zhang, Yi, Yang, Zhan, Zheng, Shizhao, Jiarui Xu, Wenlang Li, Juan Zhao, Yingxiao Mu, Chi, Zhenguo, Yi Zhang, Zhu Mao, Chen, Junru, Xianbao Tan, Mu, Yingxiao, Yang, Zhiyong, Matthew. P. Aldred, Li, Wenlang, Tan, Xianbao, Tao Yu, Junru Chen, Siwei Liu, Zhenguo Chi, Aldred, Matthew. P., Yu, Tao   +29 more
core   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

FlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen, Kefan Meng, Yiqi Zhao, Chaoran Zhou, Jiaye Shu, Di Zhang, Chengqian Cao, Wanxin Chen, Yefeng Zhou, Weihua Ning   +9 more
wiley   +1 more source