To prepare the novel photosensitive PPCs we used the photoconductive naphthalimide- The copolymer Co-Naph-NMA was synthesized by free-radical copolymerization according to (Scheme 2). Monomers Naph and n-nonyl methacrylate (NMA) were combined in a molar ratio of 1:1. The process was carried out in their 10 wt.% N,Ndimethylformamide (DMF) solutions in the presence of 1 wt.% azobisisobutyronitrile (AIBN) as a free radical initiator in a sealed ampoule at 80℃ for 24 hours. The polymers were precipitated in ethanol and resedimentated from DMF to ethanol. After drying under vacuum for 24 h, brown powdery material was obtained. Technique of measurement of the surface electric potential by dynamic probe (modified Kelvin method) was employed for determination of the photovoltaic characteristics in the samples with free surface of PPCs films (under illumination of the transparent ITO-electrode side); this makes it possible to estimate the efficiency of the photogenerated charge carriers formation and the sign of the photovoltaic response in relation to the structure of the dye molecules without an effect from the electric contacts of the photoelectric converters. Our choice of this procedure for the investigations was based on the fact that in this case the contact potential difference that arises in sandwich samples with electrodes of various materials does not have an effect on the photo processes in the PPC films. An Ag plate with a diameter of 4 mm was used as probe. The vibration frequency of the probe was 4 kHz. Semiconductor lightemitting diodes (LEDs) with maxima of emission at wavelengths 540 nm (green), 650 nm (red), and 780 nm (IR) close to the wavelength of the absorption maximum of the dyes, as well as the white LED with a wide irradiation spectral range were used to irradiate the samples. The intensity of the light from the LEDs was 40-60 W/m 2 , and the distance between the LED and the glass surface of the samples was 3,5 mm. The irradiation was performed at the side of the transparent conducting ITO sublayer. The additional photovoltaic measurements for the investigated PPCs were carried out in the symmetrical type sandwich structure samples (glass -ITO -PPC film -ITO -glass) by used high resistance voltmeter based on CA3130 voltage follower scheme . The kinetics of photovoltaic response (VPH = ΔVsurf photo = Vsurf photo -Vsurf dark) in the samples with a free surface of the PPCs films were measured using a storage USBoscilloscope BM 8020. The kinetics of photovoltaic response in the samples of sandwich structure were registered electrometrically by storage oscilloscope Tektronix TDS1001B .