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Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Improving photosensitivity without changing thermal reactivity in photochromic diarylbenzenes based on accurate
Daichi Kitagawa1, Naoko Takahashi2, Tatsumoto Nakahama2
1Department of Applied Chemistry, Graduate School of Engineering, Osaka City University, 3-3-138 Sugimoto, 558-8585, Sumiyoshi-ku, Osaka, Japan. kitagawa@osaka-cu.ac.jp.
Abstract:
1,2-Diarylbenzenes (DABs) have been developed as a new family of fast T-type photochromic switches. However, the molecular design strategy for DABs with desired optical and thermal properties is not established. In this work, we explored the best functional in quantum chemical calculations to predict the properties of DABs. Furthermore, we newly designed and synthesized DABs based on the calculation using the best functional, resulting in the improvement of the photosensitivity in the UV-A region (i.e. a shift of absorption to lower energies and an increase in the absorption coefficient) without changing the thermal back-reaction rate.
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