Mechanisms of Photophysical Processes and Photochemical Reactions in Polymers: Theory and ApplicationsDuring the last two decades, photophysical and photochemical processes have become increasingly important in many branches of polymer chemistry. Tremendous advances have been made in our understanding of the theory of photoreactions and they now have many practical applications in, for example, the synthesis of photoresists for microcircuitry, polymers for xerography, photocuring of paints and resins, photodegradation and photodestabilization of polymers. |
Contents
Electronically excited states | 1 |
Figs 16 1 16 2 16 8 16 | 3 |
Electronic energy transfer processes | 33 |
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Common terms and phrases
absorbed absorption abstraction acceptor acid acrylate addition Allen application aromatic benzoin benzophenone bond carbonyl cationic CH₂ CH3 CH3 Chem chemical chromophore coatings complex compounds concentration containing copolymers decay degradation depends dissociation donor effect efficiency electron emission energy transfer ethers example excimer excimer formation exciplex excited excited singlet excited triplet fluorescence formation formed free radical given groups hydrogen important increases initiator intensity interaction intramolecular involved irradiation ketone lifetime light Macromolecules measurements mechanism methacrylate methyl methacrylate molecular molecule monomer observed occurs oxidation oxygen phosphorescence photochemical photoinitiators photolysis photoreduction photosensitizers polar poly(vinyl polymer polymerization polystyrene presence produced properties quantum yield quenching radiation rate constant reaction reactive References relatively S₁ salts sensitizer solution solvent spectra spectrum Stabil structure styrene surface T₁ Table temperature transition triplet vinyl Wavelength