[Photochenical and photoelectronic properties of components of the photosynthetic apparatus. II. Stationary photoconductivity in chlorophyll-acceptor and chlorophyll+protein-acceptor lamellar systems].

It has been shown that the treatment of chlorophyll a amorphous layer surface with the electron acceptor n-chloranyl leads to an increase of photocurrent by 10(1)--10(3) times. The photoinduced polarization in the lamellar system chlorophyll a--n-chloranyll is studied. It has been shown that under the effect of the red light the n-chloranyl layer is negatively charged in relation to the pigment layer. Photoconductivity was discovered in the rigid layers of chlorophyll a+human serum albumin. When a thin film of n-chloranyl is sprayed on the surface of the chlorophyll-protein layer, the photocurrent increases approximately 6--7 times. The experimental results are discussed within the scheme according to which the formation of free radical carriers in chlorophyll layers is carried out by the destruction of excited states, possibly excitons on the electron-acceptor centres of dissociation.