Results 151 to 160 of about 5,621 (248)
Condensing the Cage: Novel Insights Into the Reaction Pathway of Isowurtzitane Cage Formation
ABSTRACT In this contribution, we propose an alternative reaction pathway for the formation of isowurtzitane cages. These cage products are the basis for the synthesis of CL‐20, a highly prized energetic material and propellant. Isowurtzitane cages are typically formed under acid‐catalysed conditions via the condensation reaction between glyoxal and ...
Campbell S. Wolfe +6 more
wiley +1 more source
This review focuses on inorganic and organic matrices that enable aqueous‐stable room‐temperature phosphorescence (RTP) in carbonized polymer dots (CPDs). It explains the underlying RTP mechanisms, highlights how matrix engineering provides spatial confinement and bonding interactions to stabilize triplet excitons in water, and demonstrates key ...
Yuhan Hou +4 more
wiley +1 more source
[2,2′‐biisoindoline]‐1,1′,3,3′‐tetraone (4A2B) crystal with high n‐electrons undergoes photo‐induced reversible homolysis resulting in two room‐temperature phosphorescence (RTP). One of the 4A2B molecules responds strongly to 250 nm via fast intersystem crossing (ISC) processes among high‐lying excited states.
Junxiang Huang +9 more
wiley +1 more source
An effective hybridized local and charge‐transfer emitter D3CZ4F featuring multiple C–H⋯F locking interactions was developed, achieving an outstanding EQE of 8.97%, a small roll‐off, an emission peak at 388 nm, and color coordinates of (0.165, 0.025), respectively.
Shengnan Wang +8 more
wiley +1 more source
The complete series of all nine variations of complexes (DPP)MX2 (DPP = 2,5‐di(pyridin‐2‐yl)pyrrolide; M = Al, Ga, In; X = Cl, Br, I) reveals that the heavy atom effect of both the metal ion and the halide ligands promote ISC, giving rise to dual fluorescence and phosphorescence emission at 77 K. We report on the synthesis, structural characterization,
Kai Jellinek +2 more
wiley +1 more source
Ultra‐narrow green multi‐resonance thermally activated delayed fluorescence emitters have been developed by linear π‐extension strategy using tetracyclic naphtho[2,3‐b]benzofuran unit. The resulting phosphorescence‐sensitized OLEDs achieve a maximum external quantum efficiency of 37.7% in the bottom‐emitting architecture, while the complementary top ...
Eo Jin Jeon +7 more
wiley +1 more source
Comparison of fluorescent, phosphorescent and TADF luminophores for explosive detection
The detection of nitroaromatic compounds is crucial for protecting people from explosive hazards, as well as for preserving ecosystems from their toxic effects. Photoluminescence-based sensors offer one approach to detect trace levels of explosives.
Duarte Tonet, Michele
core +1 more source
In hyperphosphorescent OLEDs, the carrier‐trapping characteristics of each phosphor and the asymmetric carrier mobility of the host material are suggested to influence the emission zone distribution, which is closely associated with operational lifetime, leading to an up to eightfold improvement in stability with Ir(ppy)3.
Naoki Meguro +8 more
wiley +1 more source
Highly blue emissive ortho‐triarylamine–acceptor (benzonitriles or cyanopyridines) conjugates are rapidly synthesized by bromine–lithium exchange borylation–Suzuki (BLEBS) sequence. Cyclic voltammetry reveals dimerization processes. Photophysical properties display stimuli‐responsive properties revealing them as promising emitters.
Monika Flörke, Thomas J. J. Müller
wiley +1 more source

