PHOTOCHEMICAL PROCESS OF P-PHENYLENEDIACRYLIC ACID MONOESTERS IN THE CRYSTAL AND MONOLAYER MULTILAYER

Photoreaction of a series of p-phenylenediacrylic acid (p-PDA) monoest er was investigated in the organized system such as crystals monolayer and multilayer (LB) films. p-PDA monoesters having a shorter alkyl ch ain than dodecyl residue, are photoreactive crystals. They gave oligom ers on irradiation. p-PDA monoesters with a longer alkyl chain than de cyl residue, could form stable monolayers and photoreactive LB films w ere prepared successfully. Photochemical reaction of LB films proceede d by cyclo-addition of double bonds forming oligomers and polymers. Th e mixed LB film with octadecylamine showed different photoreactivity f rom that of p-PDA monoester LB film.