Highly Fluorescent Pyrene-Functional Polystyrene Copolymer Nanofibers for Enhanced Sensing Performance of TNT

ACS Applied Materials & Interfaces
Anitha SenthamizhanTamer Uyar

Abstract

A pyrene-functional polystyrene copolymer was prepared via 1,3-dipolar cycloaddition reaction (Sharpless-type click recation) between azide-functional styrene copolymer and 1-ethynylpyrene. Subsequently, nanofibers of pyrene-functional polystyrene copolymer were obtained by using electrospinning technique. The nanofibers thus obtained, found to preserve their parent fluorescence nature, confirmed the avoidance of aggregation during fiber formation. The trace detection of trinitrotoluene (TNT) in water with a detection limit of 5 nM was demonstrated, which is much lower than the maximum allowable limit set by the U.S. Environmental Protection Agency. Interestingly, the sensing performance was found to be selective toward TNT in water, even in the presence of higher concentrations of toxic metal pollutants such as Cd(2+), Co(2+), Cu(2+), and Hg(2+). The enhanced sensing performance was found to be due to the enlarged contact area and intrinsic nanoporous fiber morphology. Effortlessly, the visual colorimetric sensing performance can be seen by naked eye with a color change in a response time of few seconds. Furthermore, vapor-phase detection of TNT was studied, and the results are discussed herein. In terms of practical applicati...Continue Reading

References

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Citations

Nov 18, 2015·Analytical and Bioanalytical Chemistry·Anitha SenthamizhanTamer Uyar
Apr 7, 2016·ACS Applied Materials & Interfaces·Swapnil L Sonawane, Syamakumari Asha
Nov 3, 2016·Macromolecular Rapid Communications·Qiaosheng LiShouke Yan
Feb 16, 2018·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·N Kaerkitcha, T Sagawa
Apr 30, 2019·Methods and Applications in Fluorescence·Myrto AntoniadouTheodora Krasia-Christoforou
May 16, 2019·Scientific Reports·Vishal KumarSoumitra Satapathi
May 2, 2020·Analytical and Bioanalytical Chemistry·S Madanan AnjuSony George
Sep 18, 2020·Chemical Communications : Chem Comm·Arijit JanaThalappil Pradeep
Mar 31, 2021·Journal of Fluorescence·N S VijilaSony George
Sep 10, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Sanjay PatelJean Duhamel
Dec 9, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Jaydev ThakardaPrasenjit Maity

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