Results 61 to 70 of about 292,062 (298)

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

Heavy Atom-Free Triplet Photosensitizers: Molecular Structure Design, Photophysical Properties and Application in Photodynamic Therapy

Molecules, 2023
Photodynamic therapy (PDT) is a promising method for the treatment of cancer, because of its advantages including a low toxicity, non-drug-resistant character, and targeting capability.
Xiao Xiao, Xiaoyu Zhao, Xi Chen, Jianzhang Zhao   +3 more
doaj   +1 more source

Photonic mode density effects on single-molecule fluorescence blinking [PDF]

, 2006
We investigated the influence of the photonic mode density (PMD) on the triplet dynamics of individual chromophores on a dielectric interface by comparing their response in the presence and absence of a nearby gold film.
Andrea Pomozzi, Basché T, Chance R R, Drexhage K, Fernando D Stefani, Frank Gaul, Krasimir Vasilev, Lakowicz J R, Maximilian Kreiter, Noelia Bocchio, Wadsworth H M, Widengren J, Zondervan R   +12 more
core   +2 more sources

The Effect of Purcell Cavities on the Lifetime of Thermally Activated Delayed Fluorescent Emitters

Advanced Functional Materials, EarlyView.
A pressing challenge to OLED displays and lighting is to balance high efficiency and long operational lifetime in the deep blue spectrum. The Purcell effect can reduce the triplet density and hence the probability for destructive energy‐driven triplet annihilation events that limit the OLED lifetime. Here we study of the Purcell effect on two different
Sritoma Paul, Haonan Zhao, Collin N. Muniz, Mark E. Thompson, Stephen R. Forrest   +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

Vibrational states of the triplet electronic state of H3+. The role of non-adiabatic coupling and geometrical phase

, 2015
Vibrational energies and wave functions of the triplet state of the H3+ ion have been determined. In the calculations, the ground and first excited triplet electronic states are included as well as the non-Born-Oppenheimer coupling between them.
Alijah, Alexander, Kokoouline, Viatcheslav   +1 more
core   +1 more source

Bio‐Orthogonally Crosslinked Supramolecular Polymer Bottlebrush Hydrogels for Long‐Term 3D Cell Culture

Advanced Functional Materials, EarlyView.
Fibrous benzenetrispeptide (BTP) hydrogels, fabricated via strain‐promoted azide‐alkyne cycloaddition (SPAAC) crosslinking, form robust, bioinert networks. These hydrogels can support 3D cell culture, where cell viability and colony growth depend on the fiber content.
Ceren C. Pihlamagi, David Pretzel, Peer Nölte, Kourosh Rezaei, Ulrich S. Schubert, Johannes C. Brendel   +5 more
wiley   +1 more source

Naphthalimide-phenothiazine dyads: effect of conformational flexibility and matching of the energy of the charge-transfer state and the localized triplet excited state on the thermally activated delayed fluorescence

Beilstein Journal of Organic Chemistry, 2022
In order to investigate the joint influence of the conformation flexibility and the matching of the energies of the charge-transfer (CT) and the localized triplet excited (3LE) states on the thermally activated delayed fluorescence (TADF) in electron ...
Kaiyue Ye, Liyuan Cao, Davita M. E. van Raamsdonk, Zhijia Wang, Jianzhang Zhao, Daniel Escudero, Denis Jacquemin   +6 more
doaj   +1 more source

Triplet absorption in carbon nanotubes: a TD-DFT study

, 2007
We predict properties of triplet excited states in single-walled carbon nanotubes (CNTs) using a time-dependent density-functional theory (TD-DFT). We show that the lowest triplet state energy in CNTs to be about 0.2-0.3 eV lower than the lowest singlet ...
Tretiak, Sergei
core   +1 more source

Vibronic structure of the second triplet state of 1,3,5-hexatriene [PDF]

, 1978
Electron impact spectroscopy is used to study the vibronic structive of the second triplet state of 1,3,5 ...
Frueholz, Robert P., Kuppermann, Aron
core   +1 more source