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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/13624
Title: Design of a novel FRET based fluorescent chemosensor and their application for highly sensitive detection of nitroaromatics
Authors: Taya P.
Maiti B.
Kumar V.
De P.
Satapathi, Soumitra
Published in: Sensors and Actuators, B: Chemical
Abstract: We report the development of a Fluorescence Resonance Energy Transfer (FRET) based sensor system for highly sensitive detection of nitro-aromatic compounds. The sensor system is composed of a copolymer (poly(methyl methacrylate (MMA))-co-7-(4-trifluoromethyl)coumarin-N-methacrylamide (TCMA)) (CP)1 bearing coumarin derivative in the side chain as donor and curcumin (dye) as an acceptor. Primarily, the fluorescence of the above mentioned copolymer is quenched by non-radiative energy transfer to curcumin which occurs when the two molecules are within FRET distance scale. The efficiency of this FRET process was calculated. A noticeable decrease in the FRET signal is observed as nitroaromatics viz. 2,4-dinitrotoluene (DNT) and 2,4,6-trinitrotoluene (TNT) is gradually introduced into the sensor system. Fluorescence lifetime is measured to validate the efficacy of the energy transfer process in CP-curcumin sensor system. The mechanistic details of molecular interactions between CP and curcumin system are established by infrared spectroscopy and UV–vis absorption spectroscopy. © 2017 Elsevier B.V.
Citation: Sensors and Actuators, B: Chemical (2018), 255(): 2628-2634
URI: https://doi.org/10.1016/j.snb.2017.09.073
http://repository.iitr.ac.in/handle/123456789/13624
Issue Date: 2018
Publisher: Elsevier B.V.
Keywords: Fluorescence quenching
FRET
Sensor
TNT
ISSN: 9254005
Author Scopus IDs: 57195972936
57197982652
57195978673
7101660872
36610769900
Author Affiliations: Taya, P., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Maiti, B., Polymer Research Centre, Department of Chemical Sciences, Indian Institue of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
Kumar, V., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
De, P., Polymer Research Centre, Department of Chemical Sciences, Indian Institue of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
Satapathi, S., Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttrakhand 247667, India
Funding Details: SS acknowledge SERB Young Scientist Award [Grant No: YSS/2015/000061 ]. SS like to thank Dr. M. Joesph from Indira Gandhi Centre for Atomic Research Kalapakkam for kindly providing TNT. We also acknowledge Prof. T. Pradeep from IIT Madras for the help and discussion. Appendix A
Corresponding Author: Satapathi, S.; Department of Physics, Indian Institute of Technology RoorkeeIndia; email: soumitrasatapathi@gmail.com
Appears in Collections:Journal Publications [PH]

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