Results 71 to 80 of about 6,698 (296)

Extracting Design Principles for Efficient Thermally Activated Delayed Fluorescence (TADF) from a Simple Four-State Model

open access: yes, 2019
We introduce a simple quantum-mechanical model for thermally activated delayed fluorescence (TADF). The Hamiltonian is represented in the basis of four spin-mixed diabatic states representing pure charge transfer (CT) and local excitations (LE).
Troy, Van Voorhis   +3 more
core   +1 more source

Fluorene-fused Dimeric Carbonyl/amine Multiresonant Thermally Activated Delayed Fluorescence Emitter for Efficient Green OLEDs

open access: yes, 2023
Multiresonant thermally activated delayed fluorescence (MR-TADF) materials possessing narrow emission spectra have attracted significant attention as emitters for use in high color purity organic light-emitting diodes (OLEDs).
Yan-Nan, Hu   +5 more
core   +1 more source

Mechanoluminescent HOF Nanotransducers Enabled Sono‐Optogenetics in Parkinsonian Rats

open access: yesAdvanced Functional Materials, EarlyView.
We present a mechanoluminescent system utilizing porous hydrogen‐bonded organic frameworks (HOFs) as a toolkit for focused ultrasound‐triggered, non‐invasive light delivery to the deep brain in rats. This approach enables the specific activation of PV‐GPe neurons in dopamine‐depleted Parkinson's disease rat models, resulting in a comparable alleviation
Wenliang Wang   +18 more
wiley   +1 more source

Electron spin resonance resolves intermediate triplet states in delayed fluorescence

open access: yesNature Communications, 2021
Despite advances in the design of thermally activated delayed fluorescence (TADF) emitters for devices, the effect of spin interactions is not well understood.
Bluebell H. Drummond   +13 more
doaj   +1 more source

Exciton–Exciton Annihilation in Thermally Activated Delayed Fluorescence Emitter

open access: yesAdvanced Functional Materials, 2020
AbstractRecent studies have demonstrated that in thermally activated delayed fluorescence (TADF) materials, efficient reverse intersystem crossing occurs from nonradiative triplet exited states to radiative singlet excited states due to a small singlet–triplet energy gap.
Monirul Hasan   +9 more
openaire   +5 more sources

Blood Biomarkers and Surface‐Enhanced Raman Spectroscopy for Gout: A Comprehensive Review

open access: yesAdvanced Functional Materials, EarlyView.
Schematic illustrating gout disease progression from asymptomatic hyperuricemia to chronic tophaceous disease, highlighting the limitations of conventional imaging and biochemical diagnostics and the potential of engineered SERS platforms for ultrasensitive blood‐based detection of urate‐related biomarkers across disease stages, with the color gradient
Isuri Perera   +6 more
wiley   +1 more source

A new approach exploiting thermally activated delayed fluorescence molecules to optimize solar thermal energy storage

open access: yesNature Communications, 2022
Direct conversion of solar energy to stored chemical energy can be achieved through photoisomerization. Here, authors exploit thermally activated delayed fluorescence materials as a photosensitizer and signal transducer to harness solar energy, to ...
Fan-Yi Meng   +8 more
doaj   +1 more source

Unified Analytical Framework for Understanding the Operational Stability of Blue Phosphorescent OLEDs: Quantitative Insights Into Exciton Recycling and Bimolecular Interactions

open access: yesAdvanced Functional Materials, EarlyView.
Blue phosphorescent OLEDs remain limited by poor operational stability. Here, a unified analytical framework integrating transient photoluminescence and magneto‐electroluminescence is developed to correlate intrinsic material photophysics with electrically driven degradation.
Hakjun Lee, Bum June Park, Taekyung Kim
wiley   +1 more source

Long-lived efficient delayed fluorescence organic light-emitting diodes using n-type hosts

open access: yesNature Communications, 2017
OLEDs based on thermally activated delayed fluorescence have shown high fluorescence efficiency but poor lifetime. Herein, Cui et al. demonstrate that the use of n-type host molecules can increase the device lifetime by 30 times and 1000 times for green ...
Lin-Song Cui   +8 more
doaj   +1 more source

Excited state modulation in Donor-Substituted Multi-resonant Thermally Activated Delayed Fluorescence Emitters

open access: yes, 2022
Examples of multi-resonant thermally activated delayed fluorescence (MR-TADF) emitters that emit at longer wavelengths remain rare. To reach that goal, we decorate different numbers and types of electron-donors about a central MR-TADF core, DiKTa ...
Yoann, Olivier   +10 more
core   +1 more source

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