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

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

Research output: Contribution to journalArticle

20 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)105-110
Number of pages6
JournalSensors and Actuators, B: Chemical
Volume147
Issue number1
DOIs
StatePublished - May 18 2010
Externally publishedYes

Fingerprint

Trinitrotoluene
Polyethylene glycols
Quenching
Polymers
trinitrotoluene
2,4-dinitrotoluene
Fluorescence
quenching
Polydimethylsiloxane
Thin films
fluorescence
polymers
thin films
Coumarins
aromatic compounds
Aromatic compounds
Candida
Lipases
Antarctic regions
Chromophores

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 journalArticle

Kumar, Abhishek ; Pandey, Mukesh ; Anandakathir, Robinson ; Mosurkal, Ravi ; Parmar, Virinder S. ; Watterson, Arthur C. ; Kumar, Jayant. / Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins : A fluorescence quenching study by nitro aromatics. In: Sensors and Actuators, B: Chemical. 2010 ; Vol. 147, No. 1. pp. 105-110.
@article{ab8fefa0a44b45b9908d18e192786e52,
title = "Sensory response of pegylated and siloxanated 4,8-dimethylcoumarins: A fluorescence quenching study by nitro aromatics",
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.",
keywords = "4,8-Dimethylcoumarin, Explosive, Fluorescence, Vapor sensing",
author = "Abhishek Kumar and Mukesh Pandey and Robinson Anandakathir and Ravi Mosurkal and Parmar, {Virinder S.} and Watterson, {Arthur C.} and Jayant Kumar",
year = "2010",
month = "5",
day = "18",
doi = "10.1016/j.snb.2010.02.004",
language = "English (US)",
volume = "147",
pages = "105--110",
journal = "Sensors and Actuators, B: Chemical",
issn = "0925-4005",
publisher = "Elsevier",
number = "1",

}

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 -