Chemiluminescent techniques have been employed to investigate electronic energy transfer from ketone donors (acetone, acetophenone) to acceptors (e.g., 9,lO-diphenylanthracene and biphenyl) in films of polystyrene and polymethyl methacrylate at 50 "C. Tetramethyl-l,2-dioxetane and 3,4-diphenyl-3,4-dimethyldioxetane were used to generate excited (singlet and triplet) acetone and (triplet) acetop...

The synergistic influence of microalgae on the two forms organic waste biomasses, namely biomass wastes (BW) and its digested form (DBW), during co-pyrolysis was evaluated based thermal decomposition behaviour, gas yields, extent reaction kinetics. biomasses their blends were co-pyrolysed at three different heating rates (10, 15 20 °C min −1 ) in a thermogravimetric analyzer coupled with mass s...

Chlorosomes comprise thousands of bacteriochlorophylls (BChl c, d, or e) in a closely packed structure surrounded by a lipid-protein envelope and additionally contain considerable amounts of carotenoids, quinones, and BChl a. It has been suggested that carotenoids in chlorosomes provide photoprotection by rapidly quenching triplet excited states of BChl via a triplet-triplet energy transfer mec...

Abstract The triplet 2 3 S state of a 2-electron 2-dimensional quantum dot in magnetic field is studied via complementary perspective Schrodinger–Pauli theory. that the individual electron its equation motion or ‘Quantal Newtonian’ first law. According to law, each experiences an external and internal field, sum which vanishes. binding Lorentz fields. electron-interaction, kinetic, differential...

The sun is the only renewable energy source that can accommodate humanity’s energy needs today and in the foreseeable future. The sunlight reaching the planet’s surface is filtrated through the atmosphere, reducing its UV-light intensity in the 300-400 nm range, which indeed can be harmful to life as we know it in too large doses. However, many useful photoreactions require in practice such hig...

Theoretical investigations are performed on mechanism and kinetics of the reaction of halogen peroxy radical ClOO with NO radical. The electronic structure information for both of the singlet and triplet potential energy surfaces (PESs) is obtained at the MP2/6-311 + G(2df) level of theory, and the single-point energies are refined by the CCSD(T)/6-311 + G(2df) level. The rate constants for var...

Bichromophoric molecules can support two spatially separated excited states simultaneously and thus provide novel pathways for electronic state relaxation. Exciton fission, where absorption of a single photon leads to two triplet states, is a potentially useful example of such a pathway. In this paper, a detailed study of exciton fission in three novel phenylene-linked bis(tetracene) molecules ...

Abstract The triplet 2 3 S state of a 2-electron 2-dimensional quantum dot in magnetic field is studied via complementary perspective Schrodinger–Pauli theory. that the individual electron its equation motion or ‘Quantal Newtonian’ first law. According to law, each experiences an external and internal field, sum which vanishes. binding Lorentz fields. electron-interaction, kinetic, differential...

We study cosmological perturbations in a universe with only one matter component described by triplet of fields. Configuration these fields is the same as for body coordinates solid, and they enter Lagrangian through kinetic term. restrict ourselves to cases constant pressure energy density ratio w. Superhorizon have no modes scalar vector tensor decaying or growing at different rates, w>(19−87...