The　palladium-catalyzed　oxidative　homocoupling　reactions　of　aryl　boronic　acids　using　a　solvent-free　and　ligand-free　ball-milling　method　have　been　reported.　These　reactions　allow　simple,　fast,　and　efficient　synthesis　of　a　series　of　biphenyl-derived　organic　fluorescent　materials　in　modest　and　good　yields　without　the　use　of　ligands　in　air.　The　new　organic　fluorescent　material　N-[4-(4-{phenyl[4-(triphenylvinyl)phenyl]amino}phenyl)-phenyl]-N-[4-(triphenylvinyl)phenyl]aniline　(B6)　shows　typical　aggregation-induced　emission　features　and　reversible　mechanical　force　responsive　fluorescent　properties.　©　2024　The　Royal　Society　of　Chemistry.