Results 81 to 90 of about 5,488 (219)

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

Gas–Solid Interface‐Assisted Growth of Organic Semiconductor Single Crystals: Dimensions, Structures, Mechanisms, and Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Gas–solid interface‐assisted growth strategies have unlocked precise control over crystal structure, morphology, dimension, and molecular packing. The obtained organic semiconductor single crystals represent the ideal candidates for high‐performance organic optoelectronic devices.
Tingyi Yan, Qing Tian, Jinwen Wang, Ke Jiang, Yage Han, Yuanzhuang Ren, Lingyun Li, Xiujuan Zhang, Jiansheng Jie   +8 more
wiley   +1 more source

Thermally activated delayed fluorescence exciplex sensitizers with fast reverse intersystem crossing for improving efficiency stability of organic light‐emitting diodes based on multi‐resonance emitters

FlexMat, EarlyView.
Two exciplex emitters are constructed based on a host‐guest doping strategy, and their exciton dynamics processes are investigated in depth. High‐performance OLEDs are fabricated by employing these exciplexes as emitters or sensitizers, providing excellent electroluminescence efficiencies and low efficiency roll‐offs.
Jingwen Xu, Min Wang, Jinshi Li, Ben Zhong Tang, Zujin Zhao   +4 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

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

Nonaromatic polymer-deep eutectic solvent complexes with ultralong room-temperature and high-temperature phosphorescence

Nature Communications
Ultralong organic phosphorescence (UOP) and especially high-temperature phosphorescence (HTP) are difficult to be achieved in pure organic nontraditional luminogens (NTLs).
Xuanshu Zhong, Yunhao Bai, Guo Qiao, Yunqi Shi, Wendi Xie, Jinsheng Xiao, Junwen Deng, Hanfeng Duan, Yunqing Zhang, Huiliang Wang   +9 more
doaj   +1 more source

Room-Temperature Phosphorescence of Quinine Sulfate in PVA Films: The Effect of Humidity

Optics
We report the first observation of room-temperature phosphorescence (RTP) of quinine sulfate (QS) in poly (vinyl alcohol) (PVA) films. Steady-state and time-gated measurements were performed to characterize the phosphorescence spectra, anisotropies, and ...
Agnieszka Jablonska, Bong Lee, R. Max Petty, Danh Pham, Rajveer Sagoo, Trang Thien Pham, Zygmunt Gryczynski, Ignacy Gryczynski   +7 more
doaj   +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

Enabling Aqueous Phase Long‐lived Deep‐blue Phosphorescence With Layered Double Hydroxide

Advanced Science
Aqueous‐phase phosphors are of utmost importance for a myriad of applications. However, the emission wavelengths of the current aqueous organic room‐temperature phosphorescent (RTP) materials are limited to green and red bands, while the blue part is ...
Qian Chen, Peisheng Cao, Peng Wu
doaj   +1 more source