Anthracene–naphthylacetonitrile fluorescent isomers and Cl/H substituent dependent molecular packing, solid-state fluorescence and mechanofluorochromism

Abstract

The condensation reaction between naphthylacetonitrile isomers and anthracene aldehyde produced unexpected highly twisted AIEgens, (2-(naphthalen-1-yl)-2-(10-oxo-9,10-dihydroanthracen-9-yl)acetonitrile (1) and (Z)-3-(anthracen-9-yl)-2-(naphthalen-2-yl)acrylonitrile (2)) that exhibited strong solid-state fluorescence and mechanical stimuli-induced reversible fluorescence switching....

Halogen atom substitution effect on the carbazole fluorescence properties and supramolecular interactions in the solid-state

“…18–20 The substitutional group intermolecular interactions strongly controlled the anthracene molecule orientation and exhibited tunable fluorescence. 21–24 Thus, the molecular organization of the planar π-conjugated aromatic molecules has been engineered by making use of supramolecular interactions and often resulted in obtaining enhanced/tunable solid-state fluorescence. 25,26…”