Abstract: | Visible and IR absorption spectra are studied for copper phthalocyanin (CuPc)-polyyimide composites. The composite films are
obtained by vacuum codeposition of CuPc, pyromellitedianhydride, and diaminodiphenyloxide followed by temperature-induced
imidization. On the basis of IR spectra it is shown that in the prepared composites imidization occurs over the whole CuPc
concentration range (10–90%). From the visible spectra it is found that CuPc is deposited mainly in the form of a-microcrystals,
which are destroyed during imidization to produce noncrystalline molecular aggregates. Subsequent heat treatment (320–350°C)
gives rise to CuPc β-microscrystals.
A. N. Sevchenko Research Institute of Applied Physical Problems, 7, Kurchatov St., 220064, Minsk, Belarus. Translated from
Zhurnal Prikladnoi Spektroskopii, Vol. 64, No. 4, pp. 502–506, July–August, 1997. |