Modulation of the Photochromic Property in an Organoboron-Based Diarylethene by a Fluoride Ion

Organoboron-based diarylethene was successfully synthesized and exhibited photochromic property. Furthermore, its photochromic property
can be modulated by a fluoride ion. The absorption maximum of the photostationary state shifted from 655 to 490 nm upon addition of a
fluoride ion. The modulation mechanism is attributed to the special Lewis acid−base interaction between a trivalent boron atom and a fluoride
ion.