Reverse optical changing and rewrite recording properties of Langmuir-Blodgett films of phthalocyanine copper

Langmuir-Blodgett (LB) films of tetra-nonyl phthalocyanine copper (TNPcCu) were prepared and annealed at different temperatures. Their optical spectra and optical constants were measured, the structural changes of the films were studied by x-ray diffraction. Optical recording properties were measured at a static optical recording tester.