Chemosensing of 1,4-dinitrobenzene using bisfluorene dendrimer distributed feedback lasers

Richardson, S., Barcena, H. S., Turnbull, G. A., Burn, P. L. and Samuel, I. D. W. (2009) Chemosensing of 1,4-dinitrobenzene using bisfluorene dendrimer distributed feedback lasers. Applied Physics Letters, 95 6: 063305-1-063305-3. doi:10.1063/1.3189286

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Author Richardson, S.
Barcena, H. S.
Turnbull, G. A.
Burn, P. L.
Samuel, I. D. W.
Title Chemosensing of 1,4-dinitrobenzene using bisfluorene dendrimer distributed feedback lasers
Journal name Applied Physics Letters   Check publisher's open access policy
ISSN 0003-6951
Publication date 2009-08
Sub-type Article (original research)
DOI 10.1063/1.3189286
Open Access Status File (Publisher version)
Volume 95
Issue 6
Start page 063305-1
End page 063305-3
Total pages 3
Editor Nghi Q. Lam
Place of publication College Park, MD, United States
Publisher American Institute of Physics
Collection year 2010
Language eng
Subject C1
970102 Expanding Knowledge in the Physical Sciences
970103 Expanding Knowledge in the Chemical Sciences
030107 Sensor Technology (Chemical aspects)
030303 Optical Properties of Materials
030505 Physical Organic Chemistry
020504 Photonics, Optoelectronics and Optical Communications
020499 Condensed Matter Physics not elsewhere classified
091208 Organic Semiconductors
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 2,2′-bis[9,9-di-n-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.
Keyword Chemical sensors
Organic semiconductors
Distributed feedback lasers
Laser beam applications
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

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Created: Thu, 03 Sep 2009, 07:43:08 EST by Mr Andrew Martlew on behalf of School of Chemistry & Molecular Biosciences