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Chemosensing of 1,4-dinitrobenzene using bisfluorene dendrimer distributed feedback lasers
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/content/aip/journal/apl/95/6/10.1063/1.3189286
2009-08-14
2014-09-30

Abstract

We report the trace vapor detection of the molecule 1,4-dinitrobenzene, a model analyte for the explosive substance 2,4,6-trinitrotoluene, via fluoresence quenching of a first generation conjugated dendrimer containing a -bis[9,9-di--hexylfluorene] core. We show that much greater sensitivity can be obtained by using the material as a surface emitting distributed feedback laser. We find that the slope efficiency of the laser is a convenient and sensitive indicator of the presence of the analyte. The slope efficiency decreases by a factor 50 in the presence of 1,4-dinitrobenzene.

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Scitation: Chemosensing of 1,4-dinitrobenzene using bisfluorene dendrimer distributed feedback lasers
http://aip.metastore.ingenta.com/content/aip/journal/apl/95/6/10.1063/1.3189286
10.1063/1.3189286
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