Meso-Disubstituted Anthracenes with Fluorine-Containing Groups: Synthesis, Light-Emitting Characteristics, and Photostability

Synthesis, photophysical properties, and photostability of 9,10-disubstituted anthracenes with fluorine-containing groups (FCG) are described. The values of Φ_f and λ_em greatly go up by the meso-substitution with FCG, and a nice corelationship between Φ_f and A_π (magnitude of π conjugation length in the excited single state) is observed. The C₆F₅ group at the meso positions exhibits an excellent ability in the photostability as well as in the emission efficiency.