A Bi-CP-based solid-state thin-film sensor:Preparation and luminescence sensing for bioamine vapors
A 1D coordination polymer(CP),(TBA)[Bi(bp4do)Br4](1),was synthesized by the assembly of 4,4'-bipyridine-N,N'-dioxide(bp4do)and Bi3+(TBA+=tetrabutylammonium).1 exhibits a red luminescence with a quan-tum yield of up to 69％.A solid-state thin-film sensor(1/PVP)with extremely high luminescence stability was pre-pared by combining 1 with polyvinyl pyrrolidone(PVP).1/PVP has a wide-range sensing capability for 11 NH3/amine vapors with rapid response.During the sensing process,its luminescence color changed from red to blue,which was easy for naked-eye observation.The sensing mechanism is NH3/amine-induced collapse of the framework of 1.Furthermore,1/PVP has been successfully applied to monitoring food freshness such as meat/aquatic products.CCDC:2348704.
coordination polymersolid state thin-film sensorluminescencebioaminevapor sensing
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