On the self-quenching of the first excited singlet states of aromatic molecules in the gas phase

1971 ◽  
pp. 905 ◽  
Author(s):  
David Phillips ◽  
David Gray ◽  
Khalid-Al-Ani
Keyword(s):  
Gas Phase ◽  
The Self ◽  
Excited Singlet ◽  
Aromatic Molecules ◽  
Singlet States ◽  
Excited Singlet States

Structural and dipole (hyper)polarizabilities of the ground and excited singlet states of urea and thiourea: A gas phase CIS(D) theoretical study

2009 ◽  
Vol 9 (4-6) ◽  
pp. 289-300
Author(s):  
Carlos Toro ◽  
Alan Hinchliffe ◽  
Federico Arrieta ◽  
Johan Urdaneta ◽  
Yaneth Bermudez ◽  
...  
Keyword(s):  
Gas Phase ◽  
Theoretical Study ◽  
Excited Singlet ◽  
Singlet States ◽  
Excited Singlet States

Photolysis of SO2 in the Presence of Foreign Gases. VI. Acetylene and Allene

1974 ◽  
Vol 52 (20) ◽  
pp. 3451-3453 ◽  
Author(s):  
Menachem Luria ◽  
Julian Heicklen
Keyword(s):  
Triplet State ◽  
Gas Phase ◽  
Triplet States ◽  
Relative Importance ◽  
Excited Singlet ◽  
Singlet States ◽  
Excited Singlet States ◽  
Allene System

The photolysis of SO2 at 3130 Å and 25 °C in the presence of C2H2 leads to CO, and, in the presence of allene to CO and C2H4 as gas phase products. In the C2H2 system, the CO comes from the two non-emitting triplet states of SO2, 57% from SO2** and 43% from SO2≠. In the allene system, the two excited singlet states of SO2, and possibly the emitting triplet state, also participate. The relative importance of the contributions from each state can be estimated to be >35% from 1SO2, <16% from 3SO2, 8% from SO2*, 12% from SO2**, and 29% from SO2≠.

Quasiparticle Excitations in Polyenes and Polyacetylene

1987 ◽  
Vol 109 ◽  
Author(s):  
Paul Tavan ◽  
Klaus Schulten
Keyword(s):  
Dispersion Relations ◽  
Excited Singlet ◽  
Quasi Particle ◽  
Double Excitation ◽  
Singlet States ◽  
Excited Singlet States ◽  
Electron Excitations ◽  
Quasiparticle Excitations

ABSTRACTWe apply the Pariser-Parr-Pople Hamiltonian to study many-electron excitations in polyenes and polyacetylene. The excited singlet states of polyenes, calculated by a multireference double excitation expansion, are classified as quasi-particle excitations, namely as triplet-triplet magnons and particle-hole excitons. From finite polyene spectra we derive approximate dispersion relations for these quasi-particles in the infinite polyene, i.e. polyacetylene.

Sign in / Sign up

Export Citation Format

Share Document