Results 121 to 130 of about 28,603 (262)

Organophosphide: Eine neue Klasse der Luminophorliganden für Kupfer(I)‐Carben‐basierte TADF‐Emitter und Photokatalysatoren

open access: yesAngewandte Chemie, EarlyView.
Der Einsatz von Dimesitylphosphid als höheres Homolog der etablierten Amidoliganden für Charge‐Transfer‐Kupfer(I)‐Komplexe führt zu einer Rotverschiebung der Emission um 3645 cm–1 in den rot‐orangen Spektralbereich im Festkörper sowie in den NIR‐Bereich in Lösung. Die thermisch‐aktivierte verzögerte Fluoreszenz weist hohe Dissymmetriefaktoren von glum =
Paul C. Ruer   +2 more
wiley   +1 more source

Triple Matrix Confinement‐Induced Ultrabright Afterglow From Carbon Dots With Multivariate Responsive Afterglow Colors for Advanced Dynamic Information Encryption

open access: yesAngewandte Chemie, EarlyView.
A novel carbon dots material (BUL‐CDs) with an initial afterglow brightness (406 cd m−2) far exceeding that of other afterglow luminescent materials was developed. Furthermore, the BUL‐CDs exhibited time‐dependent afterglow colors, excitation‐dependent afterglow colors, and thermochromic afterglow in response to triplet variables.
Yupeng Liu   +13 more
wiley   +2 more sources

Amplified Sensitivity of Nitrogen-Vacancy Spins in Nanodiamonds using All-Optical Charge Readout

open access: yes, 2017
Nanodiamonds containing nitrogen-vacancy (NV) centers offer a versatile platform for sensing applications spanning from nanomagnetism to in-vivo monitoring of cellular processes.
Bassett, Lee C.   +3 more
core   +2 more sources

Dissipation and dynamics in ultrafast intersystem crossings

open access: yesThe Journal of Chemical Physics, 2020
The effects of dynamics and dissipation on ultrafast intersystem crossings are studied for a dissipative two-level system coupled to a local vibronic mode. A method of amplitude damping of the wave packet is presented that accounts better for the position of the wave packet and avoids spurious transitions between potential wells.
openaire   +3 more sources

Facile Synthetic Access Towards Sulfur- and Selenium-Functionalized Boron-Based Multiresonance TADF Emitters

open access: yesMolecules
Thermally activated delayed fluorescence (TADF) materials with high photoluminescence quantum yields and a fast reverse intersystem crossing (RISC) are of the highest interest for organic light-emitting diodes (OLEDs). In the past decade, triaryl boranes
Zeynep Güven   +3 more
doaj   +1 more source

Reverse intersystem crossing mechanisms in doped triangulenes

open access: yesPhysical Chemistry Chemical Physics
Electronic structure calculations suggest that reverse intersystem crossing in B and N-doped triangulenes can occur via both direct (spin–orbit coupling) and mediated (spin–vibronic coupling) mechanisms.
Asier E. Izu   +2 more
openaire   +3 more sources

Dibenzazepine Bridged Network Polymeric Phthalocyanines as Degradable Heterogeneous Photocatalysts

open access: yesAngewandte Chemie International Edition, EarlyView.
Dibenzazepine photodynamic bridge has been introduced to zinc and cobalt networks phthalocyanines (NP‐Pcs) to obtain degradable heterogeneous photocatalysts. For the first time, light irradiation plays a key role in “design, use and degradation” of NP‐Pcs.
Erem Ahmetali   +4 more
wiley   +1 more source

Anti-solvatochromic fluorescence enhancement via the suppression of S1-T2 intersystem crossing by polarity

open access: yesNext Materials
Attenuated fluorescence of organic fluorescent probes is typically observed in hydrophilic environments due to solvatochromic fluorescence quenching, where the brightness decreases along with increasing solvent polarity.
Hao Li   +6 more
doaj   +1 more source

Photochemical afterglow of single organic molecules with wide‐range tunable lifetime

open access: yesPhotoMat, EarlyView., 2023
“All‐in‐one” strategy was used to achieve photochemical afterglow in single organic molecule, with second‐to‐hour range tunable lifetime by tailoring the electron‐withdrawing ability of substituents. Abstract Background Photochemical afterglow that relies on slow release of photons from the chemical energy stored by light pre‐irradiation has emerged as
Yuetian Pei   +6 more
wiley   +1 more source

Photoluminescence Turn‐On Method to Determine the Kinetics of Thermally Activated Delayed Fluorescence Materials

open access: yesAdvanced Physics Research, EarlyView.
Thermally Activated Delayed Fluorescence (TADF) is widely exploited to achieve high‐efficiency OLEDs. TADF Emitters are normally investigated with transient photoluminescence (PL), which requires the PL to be detected over multiple orders of magnitude in time and intensity.
Stefan Diesing   +3 more
wiley   +1 more source

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