摘要：

A platinum electrode immersed in a chromatophore suspension brought about, upon illumination, a cathodic photocurrent under potentiostatic conditions. The photocurrent action spectrum coincided fairly well with the absorption one of a chromatophore suspension, showing maxima at 600, 800, and 875 nm. The photocurrent increased with an increasing cathodic shift of the applied potential up to about -500 mV; two successive waves were observed on the photocurrent. The mechanism for the generation of the photocurrent is discussed.

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