Results 111 to 120 of about 1,915,191 (239)

Synthesis of α‐C‐Glycoside Conjugates Promoted by 4CzIPN‐Based Porous Organic Polymers Through Giese‐Like Reaction of Glycosyl Bromides in Batch and Continuous Flow

European Journal of Organic Chemistry, EarlyView.
Visible light and a 4CzIPN‐based porous organic polymer (4CzIPN‐POP) enable Giese‐like coupling of glycosyl bromides with electron‐poor alkenes to access α‐C‐glycoside conjugates. The study shows how heterogeneous thermally activated delayed fluorescence photocatalysis can be combined with continuous flow to overcome light penetration limits and ...
Francesco Riina, Laura Manfrin, Lorenzo Poletti, Daniele Ragno, Carmela De Risi, Alessandro Massi, Graziano Di Carmine   +6 more
wiley   +1 more source

A state-switchable TADF macrocycle for multi-analyte sensing and hydrogen gas-driven emission enhancement

Communications Chemistry
Photochemical sensing demands systems that adjust their optical properties without altering chromophore structure. Here, we report CPCQ, a thermally activated delayed fluorescence (TADF)-active macrocycle, as a responsive platform for optical sensing ...
Raktim Deka, Dinesh Singh, Manjeet Singh, Kshatresh Dutta Dubey, Debdas Ray   +4 more
doaj   +1 more source

Evaluation of multi-resonant thermally activated delayed fluorescence emitters as photocatalysts

This thesis explores different classes of multi-resonant thermally activated delayed fluorescence (MR-TADF) compounds as photocatalysts (PCs) in photoinduced electron (PET) and photoinduced energy transfer (PEnT) reactions.
Haemmerling, Lea
core   +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

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

Thermally Activated Delayed Fluorescence in Organic Semiconductors and Its Application in Light-Emitting Diodes

East European Journal of Physics
The presence of the effect of thermally activated delayed fluorescence (TADF) in organic light-emitting materials (emitters), manifested in the "collecting" of triplet excitons in organic semiconductor complexes that do not contain noble metals, creates ...
Serhii Melnykov, Igor Helzhynskyy, Tetiana Bulavinets, Pavlo Stakhira   +3 more
doaj   +1 more source

Fluorene‐based blue emitters: On the path to electrically pumped organic lasers

FlexMat, EarlyView.
Electrically pumped efficient operation remains unrealized, a major challenge in optoelectronics. Fluorene‐based blue‐emitting semiconductors are promising gain media, thanks to their structural tunability and favorable emission properties. This review summarizes recent advances, highlights their reliability and versatility in lasing, and outlines key ...
Yong Yan, Hao Li, Mengna Yu, Huiyin Wang, Jiangqiang He, Menghan Wu, Quanyou Feng, Linghai Xie   +7 more
wiley   +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

Achieving high efficiency and stability in blue OLEDs: Role of wide-gap hosts and emitter interactions

Nonlinear Engineering
The influence of host materials on the electroluminescent (EL) properties of blue thermally activated delayed fluorescence (TADF) emitters were lacking. In this investigation, we systematically studied the effect by doping blue emitter into various host ...
Zhu Qi, Zhang Mingjian
doaj   +1 more source

Synthesis and characterization of machine learning designed TADF molecules

Heliyon
In this study, we present a novel approach to the development of thermally activated delayed fluorescence (TADF) molecules with potentials for organic light-emitting diode (OLED) applications, leveraging machine learning (ML) algorithms to guide the ...
Weimei Shi, Yan Li, Ziying Zhang, Zheng Tan, Shiqing Yang   +4 more
doaj   +1 more source