PHOTOCHEMICAL AMPLIFICATION OF INITIAL PHOTOINDUCED EFFECTS IN POLY(HYDROXYAMINO ESTER)-BASED DONOR-ACCEPTOR LAYERS

The processes of self-sensitization and chemical sensitization of ligh t-sensitive layers composed of a polymeric donor poly(hydroxyamino est er) and an acceptor hexabromodimethyl sulfone were studied. The effect of the addition of dimethylaminobenzaldehyde on the apparent quantum yield of the formation of a polycationic product of a Michler hydrol t ype that is responsible for the absorption in the region lambda(max) = 630 nm and a change in polymer solubility was considered. The exposur e of polymer layers to 436-nm light at a fluence of 180,12, and approx imately 0.2 mJ/cm2 decreases the rate of polymer dissolution in nonpol ar solvents by a factor of 20 for the layers without additives, with t he additive, and under conditions of self-sensitization (optical inten sification of the latent image), respectively.