Results 61 to 70 of about 90,891 (346)

Obtaining triplet-triplet absorption spectra and triplet lifetimes of long-lived molecules with a UV-Visible spectrophotometer

Journal of Photochemistry and Photobiology
A simple method for obtaining triplet-triplet absorption (TTA) spectra and triplet state (T1) lifetimes of long-lived triplets is presented and demonstrated with the polycyclic aromatic hydrocarbon coronene (both normal and perdeuterated forms) in a ...
Tiago Palmeira, David S. Conceição, Diana P. Ferreira, Carla C. Ferreira, Luís F. Vieira Ferreira, Mário N. Berberan-Santos   +5 more
doaj   +1 more source

The inverted singlet–triplet gap: a vanishing myth?

Frontiers in Chemistry, 2023
Molecules with an inverted singlet–triplet gap (STG) between the first excited singlet and triplet states, for example, heptazine, have recently been reported and gained substantial attention since they violate the famous Hund’s rule.
Andreas Dreuw, Marvin Hoffmann
doaj   +1 more source

A Lightweight Procedural Layer for Hybrid Experimental–Computational Workflows in Materials Science

Advanced Engineering Materials, EarlyView.
We unveil a prototype hybrid‐workflow framework that fuses automatedcomputation with hands‐on experiments. Built atop pyiron, a lightweight, parameterized layer translates procedure descriptions into executable manual steps, syncing instrument settings, human interventions, and data capture in real‐time today.
Steffen Brinckmann, Sarath Menon, Raphael Röske, Johannes Steinhülb, Michael Selzer, Jan Janssen, Tilmann Hickel, Ruth Schwaiger, Jörg Neugebauer   +8 more
wiley   +1 more source

Dissociation of singlet excitons dominates photocurrent improvement in high-efficiency non-fullerene organic solar cells

Nano Research Energy
In organic solar cells, the singlet and triplet excitons dissociate into free charge carriers with different mechanisms due to their opposite spin state. Therefore, the ratio of the singlet and triplet excitons directly affects the photocurrent.
Qicong Li, Shizhong Yue, Zhitao Huang, Chao Li, Jiaqian Sun, Keqian Dong, Zhijie Wang, Kong Liu, Shengchun Qu, Yong Lei   +9 more
doaj   +1 more source

Triplet-Pair States in Organic Semiconductors

Annual Review of Physical Chemistry, 2019
Entanglement of states is one of the most surprising and counterintuitive consequences of quantum mechanics, with potent applications in cryptography and computing. In organic semiconductor materials, one particularly significant manifestation is the spin-entangled triplet-pair state, which consists of a pair of localized triplet excitons coupled into
Musser, A.J., Clark, J.
openaire   +3 more sources

Ultrafast processes and excited state dynamics in conjugated polymers [PDF]

, 2008
The photophysics of a number of conjugated polymers used in organic display applications has been studied using ultrafast techniques. An updated method for measuring the intersystem crossing rate was developed.
King, Simon
core  

Nominal appearance of inverted singlet and triplet excited state behaviour induced by the presence of a higher lying triplet excited state

, 2023
In recent years, thermally activated delayed fluorescence (TADF) has attracted intense attention owing to its straightforward application to high-efficiency organic light-emitting diodes.
Keito, Mizukoshi, Masaki, Saigo, Keiko, Kusuhara, Ken, Onda, Youichi, Tsuchiya, Kiyoshi, Miyata, Tomohiro, Ryu, Chihaya, Adachi   +7 more
core   +1 more source

In Situ Micromechanical Study of Bimodal γ′–γ″ Precipitate Assemblies in Ni–Cr–Al–Nb Superalloy

Advanced Engineering Materials, EarlyView.
A Ni–Cr–Al–Nb superalloy with a bimodal γ′–γ″ precipitate distribution is developed. Composite precipitate assemblies form through heterogeneous nucleation, effectively impeding dislocation motion. Micropillar compression reveals high strength at room and elevated temperatures, governed by precipitate shearing, with coupled faulting mechanisms ...
Ujjval Bansal, Tae‐Hyeok Kang, Pyuck‐Pa Choi, Subin Lee, Christoph Kirchlechner   +4 more
wiley   +1 more source

Electron spin polarization in the triplet state of methoxy-substituted phosphorus(V) tetraphenyl porphyrins

Journal of Magnetic Resonance Open
Photoexcited triplet states of porphyrins are of great relevance in various applications due to their high yield, long lifetime, and strong electron spin polarization.
D. Panariti, B.J. Bayard, A. Barbon, Y.E. Kandrashkin, P.K. Poddutoori, A. van der Est, M. Di Valentin   +6 more
doaj   +1 more source

IN4MER Biomaterial Ink: A Phosphorescent Biosensing Biomaterial Ink for Multiple Analytes (Glucose, Lactate, Oxygen) Measurements and Temperature Sensing Applications

Advanced Functional Materials, EarlyView.
Multianalyte, real‐time monitoring of bioprinted scaffolds remains challenging. Phosphorescence‐lifetime–based, optically responsive microparticles are embedded in diverse printable hydrogels (κ‐carrageenan, GelMA, PEGDA) to form biomaterial inks that report oxygen, glucose, lactate, and temperature.
Waqas Saleem, David Chimene, Berkley P. White, Kaivalya A. Deo, Jeremy L. Thomas, Nithin Chidambara, Cole Mandrona, Kirsten Landsgaard, Brian Ko, Roland Kaunas, Akhilesh K. Gaharwar, Michael J. McShane   +11 more
wiley   +1 more source