Journal
CHEMICAL COMMUNICATIONS
Volume 51, Issue 15, Pages 3057-3060Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc10294k
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Funding
- Core Research for Evolutionary Science and Technology (CREST) program of the Japan Science and Technology Agency (JST)
- MEXT, Japan [26107010]
- Grants-in-Aid for Scientific Research [15K17846, 26107010] Funding Source: KAKEN
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We report rational molecular designs for acceleration of the color-fading speed of photochromic 3H-naphthopyrans. By using steric and electrostatic repulsions induced by substituents at the 2- and 10-positions of 3H-naphthopyrans, the color-fading speed accelerates from tens of minutes to microsecond time scales. The long-lived residual color, which is an important problem to be solved for industrial applications, can also be suppressed by these strategies.
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