Photochromic conductivity modulation of conjugated polymers containing a diarylethene unit with high photochromic conversion ratios is described. The electrical conductivity can be switched quasi-reversibly from the bleached low-conductivity state (Figure, left) and the blue high-conductivity state (right) by alternate irradiation with visible and UV light, and may lead to applications in photon-mode molecular memory devices.
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Kawai et al. (2005) studied this question.
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