Results 101 to 110 of about 32,802 (321)

Tellurophene‐Induced Triplet–Singlet Spin‐Flip Acceleration: An Advanced Design for Narrowband Organoboron Emitters with Fast Reverse Intersystem Crossing

Angewandte Chemie, EarlyView.
Linking an auxiliary dibenzo[b,d]tellurophene unit markedly accelerates exciton spin conversion in multi‐resonance‐type thermally activated delayed fluorescence emitters. Owing to the heavy‐atom effect of tellurium, the corresponding OLEDs retain remarkably high external electroluminescence quantum efficiencies exceeding 25% even at an exceptionally ...
Peiyuan Yang, Jun Hyeon Lee, Kotone Urano, Takuma Yasuda   +3 more
wiley   +2 more sources

Record‐High Performance Hyperfluorescent OLEDs Achieved via Electronic Structure Control of Chlorine‐Diversified MR‐TADF Emitters

Advanced Science, EarlyView.
A late‐stage diversification strategy for the benchmark MR‐TADF emitter ω‐DABNA enables precise electronic structure control via chlorine‐activated functionalization. The resulting derivatives achieve tunable emission from 523 to 533 nm with record‐high EQE1000 up to 34.0% and excellent color purity (CIEy = 0.70–0.73), establishing a versatile platform
Taehwan Lee, Junki Ochi, Shigetada Uemura, Feiran Liu, Jiping Hao, Yasuhiro Kondo, Masahiro Hayakawa, Takuji Hatakeyama   +7 more
wiley   +1 more source

Crystals as Rockets: Modulation of the Salient Temperature in Cocrystals by Solvent Mixture Composition

Angewandte Chemie, EarlyView.
Compositionally engineered mixed solvated cocrystals enable modulation of thermosalient actuation. Guest ratio controls thermosalient temperature and propulsion intensity, providing a tunable platform for designing crystalline systems that exhibit stimuli‐responsive mechanical motion.
Ernesto A. Hernández‐Morales, Dayra Barreto‐Hernández, Dazaet Galicia‐Badillo, Rubén A. Toscano, M. Elena García‐Aguilera, Braulio Rodríguez‐Molina   +5 more
wiley   +2 more sources

Catalytic condensation for the formation of polycyclic heteroaromatic compounds

Nature Communications, 2018
The development of novel chemical reactions converting biomass-derived alcohols into important classes of compounds is a particularly attractive strategy.
Daniel Forberg, Tobias Schwob, Rhett Kempe   +2 more
doaj   +1 more source

High‐Efficiency TADF Dendritic Emitters Enabled by Synchronously Inhibiting Degenerated Triplet Excited States and Structural Relaxation Toward Solution‐Processed OLEDs with EQE Over 33%

Advanced Science, EarlyView.
Asymmetrical thermally activated delated fluorescence dendritic emitters are delicately constructed through symmetry breaking strategy, and near‐unity photoluminescence efficiency and excellent reverse intersystem crossing process are achieved via breaking the degeneracy of vibrational levels and boosting the spin flip of triplet excitons.
Xiaoxiang Yu, Wei Ping, Chengshuang Song, Jinyang Zhao, Lei Hua, Junjie Wang, Shian Ying, Yuchao Liu, Zhongjie Ren, Shouke Yan   +9 more
wiley   +1 more source

Extended Fused Carbazole‐BODIPY, High Brightness NIR Organic Dyes

Angewandte Chemie, EarlyView.
Highly fused boron‐dipyrromethene (BODIPY) with a strong donor group has been synthesized, and their photophysical behaviors fully characterized. They exhibit outstanding brightness for fluorophores emitting in the NIR region. Water‐soluble nanoparticles filled with one of these dyes demonstrate high efficiency as the NIR II visualization agent ...
Fabien Ceugniet, Valentin Ott, Pascal Retailleau, Yann Bretonniere, Olivier Maury, Manon H. E. Bousquet, Lucie Sancey, Nicolas Leclerc, Denis Jacquemin, Gilles Ulrich   +9 more
wiley   +2 more sources

Transition-Metal-Catalyzed Alkylations of Amines with Alkyl Halides: Photoinduced, Copper-Catalyzed Couplings of Carbazoles [PDF]

, 2013
N-alkylations of carbazoles with a variety of secondary and hindered primary alkyl iodides can be achieved by using a simple precatalyst (CuI) under mild conditions (0 °C) in the presence of a Brønsted base; at higher temperature (30 °C), secondary alkyl
Bissember, Alex C., Creutz, Sidney E., Fu, Gregory C., Lundgren, Rylan J., Peters, Jonas C.   +4 more
core   +1 more source

Modified carbazoles destabilize microtubules and kill glioblastoma multiform cells.

European journal of medicinal chemistry, 2018
Small molecules that target microtubules (MTs) represent promising therapeutics to treat certain types of cancer, including glioblastoma multiform (GBM).
P. Diaz, Eric A. Horne, Cong Xu, E. Hamel, Michael Wagenbach, Ravil Petrov, B. Uhlenbruck, Brian R. Haas, P. Hothi, L. Wordeman, R. Gussio, N. Stella   +11 more
semanticscholar   +1 more source

Enhanced Energy Transfer from a Metal–Organic Framework to a Highly Confined Organic Phosphorescent Dye

Advanced Science, EarlyView.
A phosphorescent dye was designed to fit in a hand‐to‐glove fashion into the 1D‐pore channels of MIL‐68(In). We synthesized MIL‐68(In) as powder and thin films, loaded the dye into the pores with controlled packing, and found that the phosphorescence and quantum yield are enhanced.
Bahram Hosseini Monjezi, Thomas Kasper, Gloria Hong, Changfeng Si, Robert Oestreich, Oliver Weingart, Peter G. Weidler, Christof Wöll, Eli Zysman‐Colman, Christoph Janiak, Stefan Bräse, Klaus Müller‐Buschbaum, Alexander Knebel   +12 more
wiley   +1 more source

Bridged Pyrroloindole‐CAYC‐Gold Complexes: Harnessing Weak Secondary Intramolecular Au···H−C(sp3) Interactions in Gold(I) Catalysis

Angewandte Chemie, EarlyView.
We present a new class of electronically and sterically hindered N‐heterocyclic carbenes, referred to as bridged cyclic (amino)ylide carbene (bCAYC), where 9H‐pyrrolo[1,2‐a]indole acted as carbene core and diaryl sulfonium as ylide partner. Corresponding bCAYC‐Au(I) exhibits a weak secondary intramolecular Au···H−C(sp3) interaction as a secondary ...
Sourav Sekhar Bera, Anurag Kumar, Pengcheng Gao, Sanghamitra Das, Roger Lalancette, Roman Szostak, Michal Szostak   +6 more
wiley   +2 more sources