Glass transition 4 Activation energy 2 Derivatives 2 Diffusion 2 Diffusion in solids 2 Esters 2 Glass 2 Ground state 2 Ground-state molecules 2 Irradiation 2 Isomerization 2 Molecules 2 Organic compounds 2 Photobleaching 2 Photolysis 2 Polarization 2 Polarized fluorescence 2 Poly(ethyl methacrylate) 2 Poly(methyl methacrylate) (PMMA) 2 Polybutylmethacrylate 2 Polymer films 2 Polymers 2 Polymethyl methacrylates 2 Rotational diffusion 2 Rotational diffusion coefficients 2 Rotational dynamics 2 Semiconducting films 2 Thermal back-isomerization 2 Viscosity 2 alcohol 2