pH value dependence of the photothermal and optical absorption spectra for polyaniline films

Photothermal (photocalorimetric and photoacoustic) spectroscopies are applied to study the heat generation by nonradiative processes in electrodeposited polyaniline together with the optical absorption. Photothermal spectra show that the changes of signal intensity are different from that of optical absorption suggesting the character of lattice relaxation of low dimensional system.