Results 21 to 30 of about 5,066,237 (304)

Aromaticity and Antiaromaticity in the Excited States of Porphyrin Nanorings [PDF]

, 2019
Aromaticity can be a useful concept for predicting the behavior of excited states. Here we show that π-conjugated porphyrin nanorings exhibit size-dependent excited-state global aromaticity and antiaromaticity, for rings containing up to eight porphyrin ...
Takayuki, Kobatake, Renee, Haver, Laura, Herz, Martin, Peeks, Kirstie, McLoughlin, Harry L., Anderson, Juliane, Gong   +6 more
core   +2 more sources

Electronically Excited States of Free Radicals

Physchem, 2023
Formation of the excited doublet (D) and quartet (Q) states of free radicals under their photoexcitation is discussed. The relative positions of the D and Q states are compared to the positions of the photoexcited states of organic molecules (Jablonsky ...
Igor V. Khudyakov
doaj   +1 more source

A search for excited states of 3He

Nuclear Physics A, 1967
The ^3He+^3He interaction does not excite sharp states of ^3He with a cross section larger than 120 μb · sr^(−1) below 30 MeV excitation.
Slobodrian, R.J., McKee, J.C.S., Clark, D.J., Tivol, W.F., Tombrello, T.A.   +4 more
openaire   +3 more sources

Density-based Reactivity Theory Applied to Excited States [PDF]

, 2023
Excited states are essential to many chemical processes in photosynthesis, solar cells, light-emitting diodes, and so on, yet how to formulate, quantify, and predict physiochemical properties for excited states from the theoretical perspective is far ...
Xiaoyan, An, CHunying, Rong, Meng, Li, Wenbiao, Zhang, Shubin, Liu, Xin, He   +5 more
core   +1 more source

Excited States of Maximal Warm Holes

Universe, 2023
Recently, the Einstein–Maxwell–scalar model with a non-minimal coupling between the scalar and Maxwell fields was explored. As a result, a new class of black hole solutions with scalar hair was discovered.
Yuan Yue, Yong-Qiang Wang
doaj   +1 more source

Solvent-dependent dual emission processes in charge-transfer excited states of phenothiazine-triphenyltriazine conformers [PDF]

, 2022
We have investigated the solvent effects on charge-transfer excited states in a donor-acceptor type luminescent material, phenothiazine-triphenyltriazine (PTZ-TRZ), which has characteristic two conformers: quasi-axial and quasi-equatorial conformers ...
Masaki, Saigo, Kiyoshi , Miyata, Ryu, Tomohiro, Yuushi, Shimoda, Ken, Onda, Youichi, Tsuchiya, Hajime, Nakanotani, Chihaya, Adachi   +7 more
core   +1 more source

Elementary excitation in the Haldane state

Physical Review Letters, 1990
A localized two-spin bound state with the resultant spin S=1 is proposed as an elementary excitation of the Haldane state in Ni(${\mathrm{C}}_{2}$${\mathrm{H}}_{8}$${\mathrm{N}}_{2}$)${\mathrm{NO}}_{2}$(${\mathrm{ClO}}_{4}$) (NENP) and Ni(${\mathrm{C}}_{3}$${\mathrm{H}}_{10}$${\mathrm{N}}_{2}$)${\mathrm{NO}}_{2}$(${\mathrm{ClO}}_{4}$) (NINO). The bound
Kindo, Koichi, Date, Muneyuki
openaire   +2 more sources

Luz: um raro produto de reação

Química Nova, 2011
The production of visible light by chemical reactions constitutes interesting and fascinating phenomena and several reaction mechanisms are discussed to rationalize excited state formation.
Fernando Heering Bartoloni, Luiz Francisco Monteiro Leite Ciscato, Mônica Melchioretto de Medeiros Peixoto, Ana Paula Fileno dos Santos, Cerize da Silva Santos, Sandro de Oliveira, Felipe Alberto Augusto, Ana Paula Eskildsen Pagano, Wilhelm Josef Baader, Erick Leite Bastos   +9 more
doaj   +1 more source

Deriving density-matrix functionals for excited states

SciPost Physics, 2023
We initiate the recently proposed $w$-ensemble one-particle reduced density matrix functional theory ($w$-RDMFT) by deriving the first functional approximations and illustrate how excitation energies can be calculated in practice.
Julia Liebert, Christian Schilling
doaj   +1 more source

Spectroscopy at the two-proton drip line: Excited states in 158W

Physics Letters B, 2017
Excited states have been identified in the heaviest known even-Z N=84 isotone 158W, which lies in a region of one-proton emitters and the two-proton drip line.
D.T. Joss, R.D. Page, A. Herzán, L. Donosa, J. Uusitalo, R.J. Carroll, I.G. Darby, K. Andgren, B. Cederwall, S. Eeckhaudt, T. Grahn, P.T. Greenlees, B. Hadinia, U. Jakobsson, P.M. Jones, R. Julin, S. Juutinen, M. Leino, A.-P. Leppanen, M. Nyman, D. O'Donnell, J. Pakarinen, P. Rahkila, M. Sandzelius, J. Sarén, C. Scholey, D. Seweryniak, J. Simpson, J. Sorri   +28 more
doaj   +1 more source