Phenothiazine-based benzoxazole derivates exhibiting mechanochromic luminescence: the effect of a bromine atom

Abstract

The mechanochromism of two phenothiazine-based benzoxazole derivates (<bold>PVB</bold> and <bold>BPVB</bold>) was compared. The ground film of <bold>PVB</bold> without bromine atoms can self-cure within 15 min at room temperature, while the ground film for <bold>BPVB</bold> showed no changes for at least 2 weeks.