Title :
Fluorene-thiophene-based thin-film fluorescent chemosensor for methamphetamine vapor
Author :
Fu, Y.Y. ; Shi, L.Q. ; Zhu, D.F. ; He, C. ; Wen, D. ; Deng, C.M. ; He, Q.G. ; Cao, H.M. ; Cheng, J.G.
Author_Institution :
State Key Lab. of Transducer Technol., Chinese Acad. of Sci., Shanghai, China
Abstract :
We here report a new “turn-on” sensory mechanism for vapor sensing in solid-state based on binding-induced weakening of internal heavy-atom effect. Spin-coating films of 9, 9-diocylfluorene-2, 7-bisthiphene 1 and poly [(9, 9-diocylfuorenyl-2, 7-diyl)-alt (3-hexylthiophene-2, 5-diyl)] 2 were obtained and characterized by absorption and fluorescence spectra. The vapor sensing behaviors of the films were investigated with respect to the amines such as n-propylamine, aniline, benzylamine, p-toluidine, diisopropylanmine and methylamphetamine at room temperature. The result indicated that the films exhibited rapid and selective “turn-on” fluorescent response to methylamphetamine vapor.
Keywords :
absorption; chemical sensors; fluorescence; organic compounds; thin film sensors; ultraviolet spectra; visible spectra; Spin-coating films; absorption spectra; aniline; benzylamine; diisopropylanmine; fluorene-thiophene-based thin-film fluorescent chemosensor; methamphetamine vapor; n-propylamine; p-toluidine; temperature 293 K to 298 K; vapor sensing behaviors; Absorption; Compounds; Electrodes; Films; Fluorescence; Polymers; Sensors; Fluorene-thiophene; Methylamphetamine; Turn-on; sensor;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems Conference (TRANSDUCERS), 2011 16th International
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-0157-3
DOI :
10.1109/TRANSDUCERS.2011.5969267
