Abstract
Coumarins comprise a very large class of phenolic compounds and are well known for their optical properties. Co-polymers of 4,8-dimethylcoumarins with poly(ethylene glycol) (PEG) and polydimethylsiloxane (PDMS) have been synthesized using Candida antarctica lipase as a catalyst under solventless condition. These co-polymers can be coated as thin films without significant aggregation of the chromophores. The low Tg of PEG and PDMS may facilitate porous structure in solid thin films which allows quencher molecules to easily diffuse in and out of these films. Fluorescence quenching of these co-polymers containing 4,8-dimethylcoumarin and their response to electron-deficient aromatic compounds, 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT), have been investigated in both solution and thin film. The response of these polymeric sensors is promising and can easily detect DNT and TNT at few parts per billion levels.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 105-110 |
| Number of pages | 6 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 147 |
| Issue number | 1 |
| DOIs | |
| State | Published - May 18 2010 |
| Externally published | Yes |
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Keywords
- 4,8-Dimethylcoumarin
- Explosive
- Fluorescence
- Vapor sensing
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry
Cite this
Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins : A fluorescence quenching study by nitro aromatics. / Kumar, Abhishek; Pandey, Mukesh; Anandakathir, Robinson; Mosurkal, Ravi; Parmar, Virinder S.; Watterson, Arthur C.; Kumar, Jayant.
In: Sensors and Actuators, B: Chemical, Vol. 147, No. 1, 18.05.2010, p. 105-110.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins
T2 - A fluorescence quenching study by nitro aromatics
AU - Kumar, Abhishek
AU - Pandey, Mukesh
AU - Anandakathir, Robinson
AU - Mosurkal, Ravi
AU - Parmar, Virinder S.
AU - Watterson, Arthur C.
AU - Kumar, Jayant
PY - 2010/5/18
Y1 - 2010/5/18
N2 - Coumarins comprise a very large class of phenolic compounds and are well known for their optical properties. Co-polymers of 4,8-dimethylcoumarins with poly(ethylene glycol) (PEG) and polydimethylsiloxane (PDMS) have been synthesized using Candida antarctica lipase as a catalyst under solventless condition. These co-polymers can be coated as thin films without significant aggregation of the chromophores. The low Tg of PEG and PDMS may facilitate porous structure in solid thin films which allows quencher molecules to easily diffuse in and out of these films. Fluorescence quenching of these co-polymers containing 4,8-dimethylcoumarin and their response to electron-deficient aromatic compounds, 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT), have been investigated in both solution and thin film. The response of these polymeric sensors is promising and can easily detect DNT and TNT at few parts per billion levels.
AB - Coumarins comprise a very large class of phenolic compounds and are well known for their optical properties. Co-polymers of 4,8-dimethylcoumarins with poly(ethylene glycol) (PEG) and polydimethylsiloxane (PDMS) have been synthesized using Candida antarctica lipase as a catalyst under solventless condition. These co-polymers can be coated as thin films without significant aggregation of the chromophores. The low Tg of PEG and PDMS may facilitate porous structure in solid thin films which allows quencher molecules to easily diffuse in and out of these films. Fluorescence quenching of these co-polymers containing 4,8-dimethylcoumarin and their response to electron-deficient aromatic compounds, 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT), have been investigated in both solution and thin film. The response of these polymeric sensors is promising and can easily detect DNT and TNT at few parts per billion levels.
KW - 4,8-Dimethylcoumarin
KW - Explosive
KW - Fluorescence
KW - Vapor sensing
UR - http://www.scopus.com/inward/record.url?scp=77953139794&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77953139794&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2010.02.004
DO - 10.1016/j.snb.2010.02.004
M3 - Article
AN - SCOPUS:77953139794
VL - 147
SP - 105
EP - 110
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
IS - 1
ER -