ABSTRACT The dependence of the luminescence quantum yield of linear polymer molecules that contai... more ABSTRACT The dependence of the luminescence quantum yield of linear polymer molecules that contain chromophores at the ends on the number of units of polymer chain is studied. Numerical calculations for the dipole-dipole energy transfer between chromophores show that an increase in the chain length by a factor of 2 leads to a several-fold increase in the luminescence quantum yield depending on the ratio of the Förster radius to the radius of polymer coil. An approximate formula is derived for the adequate analysis of the dependence at the Förster radius that is significantly less than the radius of polymer coil. The dependence of the luminescence quantum yield of linear polymer molecules on the length of the statistical segment (unit) at a constant total length of the chain is also studied.
We studied the effect of the size of a polymer molecule, of the type of its motion in solution, a... more We studied the effect of the size of a polymer molecule, of the type of its motion in solution, and of the homogeneous and inhomogeneous broadening of its spectra on the luminescence kinetics of chromophores attached to the ends of a polymer chain.
Solutions of the Lifshits-Slezov equations for the size distribution function of grains of a new ... more Solutions of the Lifshits-Slezov equations for the size distribution function of grains of a new phase (quantum dots) are obtained for the case of initially monodisperse distribution. Based on these solutions, a conclusion is made regarding the dependence of the distribution functions on the initial conditions, and its qualitative asymptotics is found for a few particular cases of initial conditions.
Monte Carlo simulations of chain conformations and the diffusion equation were used to analyze th... more Monte Carlo simulations of chain conformations and the diffusion equation were used to analyze the fluorescence kinetics of short polymer chains labeled with a probe and a quencher at opposite ends. In simulations, three chain models were considered: an ideal chain (without volume interactions); a self-avoiding chain taking into account the exclusive volume effect; and a self-avoiding chain with limited
ABSTRACT The dependence of the luminescence quantum yield of linear polymer molecules that contai... more ABSTRACT The dependence of the luminescence quantum yield of linear polymer molecules that contain chromophores at the ends on the number of units of polymer chain is studied. Numerical calculations for the dipole-dipole energy transfer between chromophores show that an increase in the chain length by a factor of 2 leads to a several-fold increase in the luminescence quantum yield depending on the ratio of the Förster radius to the radius of polymer coil. An approximate formula is derived for the adequate analysis of the dependence at the Förster radius that is significantly less than the radius of polymer coil. The dependence of the luminescence quantum yield of linear polymer molecules on the length of the statistical segment (unit) at a constant total length of the chain is also studied.
We studied the effect of the size of a polymer molecule, of the type of its motion in solution, a... more We studied the effect of the size of a polymer molecule, of the type of its motion in solution, and of the homogeneous and inhomogeneous broadening of its spectra on the luminescence kinetics of chromophores attached to the ends of a polymer chain.
Solutions of the Lifshits-Slezov equations for the size distribution function of grains of a new ... more Solutions of the Lifshits-Slezov equations for the size distribution function of grains of a new phase (quantum dots) are obtained for the case of initially monodisperse distribution. Based on these solutions, a conclusion is made regarding the dependence of the distribution functions on the initial conditions, and its qualitative asymptotics is found for a few particular cases of initial conditions.
Monte Carlo simulations of chain conformations and the diffusion equation were used to analyze th... more Monte Carlo simulations of chain conformations and the diffusion equation were used to analyze the fluorescence kinetics of short polymer chains labeled with a probe and a quencher at opposite ends. In simulations, three chain models were considered: an ideal chain (without volume interactions); a self-avoiding chain taking into account the exclusive volume effect; and a self-avoiding chain with limited
Uploads
Papers by Evgeny Bodunov