Triphenylamine or carbazole-based benzothiadiazole luminophors with remarkable solvatochromism and different mechanofluorochromic behaviors

摘要

Two triphenylamine or carbazole-based benzothiadiazole luminophors have been successfully synthesized and characterized. Interestingly, both the donor-acceptor-donor (D-A-D) type compounds 1 and 2 exhibited remarkable solvatochromism behavior. In addition, luminogen 1 showed reversible mechanochromism phenomenon involving red-shifted fluorescent color transformation from yellow to red. However, luminogen 2 showed switchable mechanochromism behavior involving blue-shifted fluorescent color change from yellow to yellow-green. (C) 2019 Published by Elsevier Ltd.