Metal Coordination-Assisted Near-Infrared Photochromic Behavior: A Large Perturbation on Absorption Wavelength Properties of N,N-Donor Ligands Containing Diarylethene Derivatives by Coordination to the Rhenium(I) Metal Center

摘要

Photochromic diarylethene materials have drawn much attention in recent years since the first report made by Kellogg et al.1a and subsequent extensive studies by Irie and co-workers on the photochromic properties of diarylethene molecules. Their promising fatigue resistance and thermally irreversible properties make them ideal candidates for potential applications in photoswitching molecular devices and optical memory storage. Recently, different attempts have been made to design photochromic compounds that show absorption and reactivity in the near-infrared (NIR) region in order to enhance the semiconductor diode laser susceptibility for applications in optical memory storage.