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Effect of film thickness, blending and undercoating on optical detection of nitroaromatics using fluorescent polymer films
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Zhaohui Wang, Zhi Yuan Ma, Jianjun Bock, Wojtek J. Ma, Dongge |
| Copyright Year | 2010 |
| Abstract | In this work, using a fluorescent poly(phenylene ethynylene) containing the rigid pentiptycene and large cholesteryl ester pendent groups, the fluorescence quenching properties of the polymer thin films in response to vapor of 2,4-dinitrotulene (DNT) have been investigated by varying the film thickness, applying an undercoating and blending with another polar polymer. A significant change in fluorescence intensity (51% in 60 s) in response to DNT vapor exposure at ambient temperature was achieved when the polymer film coated on glass plate was about 2 nm in thickness. In comparison with the film of polymer alone, the film undercoated with (3-aminopropyl)triethoxysilane and the film of polymer blend containing a non-fluorescent polymer showed additional 18.5% (in 20-s exposure) and 18.7% (in 5-min exposure) decrease in fluorescence intensity, respectively. The use of polymer or polymer blend coated on optic-fiber tip for detection of DNT vapor has also been demonstrated. |
| Starting Page | 842 |
| Ending Page | 847 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/j.polymer.2010.01.003 |
| Volume Number | 51 |
| Alternate Webpage(s) | http://w3.uqo.ca/photonique/papers/Effect%20of%20film%20thickness,%20blending%20and%20undercoating%20on%20optical%20detection.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
