Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins: A fluorescence quenching study by nitro aromatics

Abhishek Kumar; Mukesh K. Pandey; Robinson Anandakathir; Ravi Mosurkal; Virinder S. Parmar; Arthur C. Watterson; Jayant Kumar

doi:10.1016/j.snb.2010.02.004

Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins: A fluorescence quenching study by nitro aromatics

Abhishek Kumar, Mukesh K. Pandey, Robinson Anandakathir, Ravi Mosurkal, Virinder S. Parmar, Arthur C. Watterson, Jayant Kumar

Radiology

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

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 T_g 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	https://doi.org/10.1016/j.snb.2010.02.004
State	Published - May 18 2010

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

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Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins : A fluorescence quenching study by nitro aromatics. / Kumar, Abhishek; Pandey, Mukesh K.; 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 › peer-review

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