scholarly journals EFFECT OF OXYGEN ON THE PHOTOSTATIONARY STATE COMPOSITION IN TRIPLET SENSITIZED CIS–TRANS ISOMERIZATION OF 1-ARYL-3,3-DIMETHYL-1-BUTENES. A CLASSIFICATION OF TRIPLET ENERGY SURFACES OF AROMATIC OLEFINS

1981 ◽  
Vol 10 (10) ◽  
pp. 1377-1380 ◽  
Author(s):  
Tatsuo Arai ◽  
Takashi Karatsu ◽  
Hirochika Sakuragi ◽  
Katsumi Tokumaru
Keyword(s):  
Triplet Energy ◽  
Photostationary State ◽  
Trans Isomerization ◽  
Effect Of Oxygen ◽  
Energy Surfaces ◽  
State Composition

Arene Hapticity in (C6H6)Cr(CO)n(n= 1−5) Complexes:  A DFT Study of Singlet and Triplet Energy Surfaces

2004 ◽  
Vol 23 (10) ◽  
pp. 2315-2325 ◽  
Author(s):  
Revital Cohen ◽  
Eric Weitz ◽  
Jan M. L. Martin ◽  
Mark A. Ratner
Keyword(s):  
Dft Study ◽  
Triplet Energy ◽  
Energy Surfaces

Photochemical cis-trans Isomerization of 2-Substituted 9-(2-Nitroethenyl)anthracenes. X-Ray Structure Analyses of (E)- and (Z)-9-(2-Nitro-2-phenylethenyl)anthracene

1989 ◽  
Vol 42 (4) ◽  
pp. 593 ◽  
Author(s):  
HD Becker ◽  
BW Skelton ◽  
H Sorensen ◽  
AH White
Keyword(s):  
Single Crystal ◽  
Quantum Yields ◽  
X Ray Diffraction ◽  
X Ray ◽  
Photostationary State ◽  
Trans Isomerization ◽  
Photochemical Isomerization

(E)-9-(2-Nitropropeny1)anthracene and (E)-9-(2-nitro-2-phenylethenyl)anthracene have been prepared by piperidine-catalysed condensation of 9-anthraldehyde with nitroethane and nitro(phenyl)methane, respectively. The corresponding (Z)-compounds were obtained by photochemical isomerization, quantum yields of geometrical isomerlzation being measured in cyclohexane, benzene, dichloromethane and ethanol. In virtually all solvents the (Z)-isomers are favoured at the photostationary state. The structures of (E)- and (2)-942- nitro-2-phenylethenyl)anthracene have been established by single-crystal X-ray diffraction studies.

Metal-binding hydrazone photoswitches for visible light reactivity and variable relaxation kinetics

2017 ◽  
Vol 16 (11) ◽  
pp. 1604-1612 ◽  
Author(s):  
Kacey C. Hall ◽  
Andrew T. Franks ◽  
Rory C. McAtee ◽  
Michael S. Wang ◽  
Vivian I. Lu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Visible Light ◽  
Binding Affinity ◽  
Blue Light ◽  
Metal Binding ◽  
Relaxation Kinetics ◽  
Photostationary State ◽  
State Composition

Photoactive aroylhydrazones demonstrate variability in UVA, UVC and blue light photoreactivity, photostationary state composition, photoisomer thermal stability, and relative iron(iii) binding affinity in ways that may inform metal-gated photoswitching applications.

Triplet energy surfaces of one-way isomerizing olefins as studied by singlet oxygen luminescence technique

1988 ◽  
Vol 149 (2) ◽  
pp. 161-166 ◽  
Author(s):  
Tatsuo Arai ◽  
Takashi Karatsu ◽  
Masahiro Tsuchiya ◽  
Hirochika Sakuragi ◽  
Katsumi Tokumaru
Keyword(s):  
Singlet Oxygen ◽  
Triplet Energy ◽  
Energy Surfaces

Triplett-sensibilisierte Photoreaktionen von Azobenzol in schwefelsaurer Lösung / Triplet-sensitized Photoreaction of Azobenzene in Sulphuric Acid

1981 ◽  
Vol 36 (11) ◽  
pp. 1180-1186 ◽  
Author(s):  
Hermann Rau ◽  
Alan D. Crosby ◽  
Alan D. Crosby ◽  
Rudolf Frank
Keyword(s):  
Sulphuric Acid ◽  
Electron Acceptor ◽  
Thermally Induced ◽  
Photostationary State ◽  
Trans Isomerization ◽  
Azo Group ◽  
Kinetics Of

The kinetics of the thermally induced cis-trans-isomerization of protonated azobenzene de­pend upon the amount of acid in a mixed H2SO4-H2O-solvent. This is rationalized by the assumption of a doubly protonated azobenzene molecule as an intermediate. Triplet sensitization of protonated azobenzene in 73% sulphuric acid (by weight) leads to cis-trans-isomerization and a photostationary state. This is similar to stilbene. With 1-aminonaphthalene as a sensitizer a photoreduction and cleavage of the azo group is an alternative reaction. It is shown that the cis-azobenzene molecule is the electron acceptor and that the photoreduction can be quenched by the addition of oxygen.

scholarly journals Triplet Energy Transfer and Cis-Trans Isomerization In 3-Phenyl-2-Propenyloxybenzophenone

2019 ◽  
Vol 8 (6) ◽  
pp. 4459-4462
Keyword(s):  
Energy Transfer ◽  
Intramolecular Energy Transfer ◽  
Trans Isomers ◽  
Triplet Energy ◽  
Photochemical Behavior ◽  
Trans Isomerization ◽  
Cis And Trans Isomers ◽  
Cis And Trans ◽  
Triplet Energy Transfer

In this report, photochemical behavior of 2-(3-phenyl-trans-2-propenyloxy)benzophenone and 2-(3-phenyl -cis-2-propenyloxy)benzophenone is discussed. In contrast to allyl and propargyl ethers of 2-hydroxybenzophenone that were photoactive at 330 nm leading to the formation of 2,3-disubstitutedbenzofuranols, 2-(3-phenyl-trans-2-propenyl oxy)benzophenone and 2-(3-phenyl-cis-2-propenyloxy) benzophenone under these conditions led to photoisomerisation and resulted in the formation of a mixture of cis and trans isomers in photostationary equilibrium, due to intramolecular energy transfer

DFT Study of the Spin-Forbidden Reaction of N2O with CO Catalysed by Y+ Ions

2017 ◽  
Vol 42 (1) ◽  
pp. 1-7
Author(s):  
Yongchun Tong ◽  
Qingyun Wang ◽  
Xinjian Xu ◽  
Yongcheng Wang
Keyword(s):  
Potential Energy ◽  
Potential Energy Surfaces ◽  
Basis Sets ◽  
Intrinsic Reaction Coordinate ◽  
Effective Core Potential ◽  
Triplet Energy ◽  
Core Potential ◽  
Metal Atoms ◽  
Cyclic Reaction ◽  
Energy Surfaces

The mechanism of the cyclic reaction N2O(X1Σ+) + CO(1Σ+) → N2(X1Σg+) + CO2(1Σg+) catalysed by Y+ ions has been investigated on both singlet and triplet potential energy surfaces. The reactions were investigated by means of the relativistic effective core potential together with the Stuttgart basis sets on Y and the UB3LYP/6-311G** level of theory on non-metal atoms. The crossings involved between the singlet and triplet energy surfaces have been investigated by means of the intrinsic reaction coordinate approach used by Yoshizawa et al. Furthermore, both steps of the reaction are exothermic and the overall reaction is exothermic by 361.12 kJ mol−1.

Singlet and triplet energy surfaces of NiH2

1983 ◽  
Vol 78 (9) ◽  
pp. 5682-5692 ◽  
Author(s):  
M. R. A. Blomberg ◽  
P. E. M. Siegbahn
Keyword(s):  
Triplet Energy ◽  
Energy Surfaces
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