Synthesis, Optoelectronic Properties of a New Photochromic Diarylethene Bearing Benzothienyl and Malononitrile Group

Abstract:

An unsymmetrical diarylethene derivative bearing both benzothienyl and thienyl moieties, in which a malononitrile group was substituted at the 5-position of the thienyl ring, was synthesized. This compound undergo a reversible electrocyclic rearrangement, generating strongly colored closed-ring isomer upon irradiation with UV-light which show nonfluorescence, while exposure to light in the visible range triggers the cycloreversion to the colorless open-ring form that exhibits strong fluorescence properties. This properties of molecular photochromism were developed that showed both photo switches and fluorescence switches. The erasable and rewritable photo-images on this photochromic diarylethene were successfully demonstrated. This developments are crucial for fundamental research and eventual technical application for high-density optical data storage.

• Periodical: Advanced Materials Research (Volumes 295-297)
• Pages: 208-211
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.295-297.208
• Online since: July 2011
• Authors: Cong Bin Fan, Shou Zhi Pu, Wei Jun Liu, Shi Qiang Cui
• Keywords: Diarylethene, Fluorescence, Optical Storage, Photochromic

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