A Novel Photoresponsive π-Conjugated Polymer Based on Diarylethene and its Photoswitching Effect in Electrical Conductivity


  • This work was supported by the Grant-in-Aid for Fundamental Scientific Research (#14350455 and #1510455) and for the 21st Century COE Program, “Functional Innovation of Molecular Informatics” from the Ministry of Education, Culture, Sports, Science, and Technology, Japan. Supporting Information is available online from Wiley InterScience or from the author.


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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.