ELECTRON-DONOR ACCEPTOR COPOLYACRYLATES WITH HIGH PHOTOSENSITIVITY

A discussion is presented of the reaction between dinitrobenzoyl chloride and the precursor copolymer to obtain EDA copolyacrylates. By preliminary computation using Onsager's 'geminate recombination' model, we found that copolymers have higher primary quantum yield values ( PHI //0) for formation of a bound electron-hole pair but almost the same thermalization radius compared with those of the corresponding doped systems. In the copolymer the donor and acceptor chromophores are aligned in the polymer backbone, thus the chemical nature of the copolymer seems quite favorable for a photophysical process which may take place prior to the formation of the initial electron-hole pair.