The interplay of mechanical grinding and aniline vapor fuming on the fluorescence of the pentiptycene-anthracene-pentiptycene π-conjugated molecules PAP-Cn, where n is 4, 8, 12, or 16 and refers to the number of carbon atom in the terminal alkyl chains, in solid films are reported. The differences and similarities among the four homologs have led to a conclusion of the formation of an emissive triplex state for the ground and fumed films. Thermogravimetric analysis reveals the guest-host molar ratio and the retention ability of the aniline on the various types of films. A stepwise protocol of fuming-grindingannealing is developed for fluorimetric differential sensing of eight substituted aniline vapors with a single probe of PAP-C8. The role of the bulky pentiptycene groups in the observed fluorescence properties is also discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.