Semiconductor Physics, Quantum Electronics & Optoelectronics, 23 (4), P. 431-436 (2020).

Localized surface plasmon resonance nanochips with molecularly imprinted polymer coating for explosives sensing
V.I. Chegel1,2, A.M. Lopatynskyi1,2, V.K. Lytvyn1, P.V. Demydov1, J.P. Martínez-Pastor3, R. Abargues3, E.A. Gadea3, S.A. Piletsky4

1V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine
41, prospect Nauky, 03680 Kyiv, Ukraine
2Institute of High Technologies, Taras Shevchenko National University of Kyiv,
64/13, Volodymyrska str., Kyiv 01601, Ukraine
3University of Valencia, 46980, Paterna, Spain
4University of Leicester, LE1 7RH, UK

Abstract. Sensor elements based on localized surface plasmon resonance phenomenon in arrays of Au nanostructures on glass substrates (nanochips) with molecularly imprinted acrylamide copolymer coating have been proposed for explosives analogues sensing in liquid and vapor phase. Nanochips exhibited detection limits of 1 pM in aqueous solution and 0.1 ppm in gaseous state against 4-nitrophenol. Vapor phase sensing of 4-nitrotoluene, 1-nitronaphthalene and 5-nitroisoquinoline using the developed 4-nitrophenol-imprinted plasmonic nanochips demonstrated partially selective response with time to signal saturation starting from 2 minutes.

Keywords: localized surface plasmon resonance, gold nanostructures, nanochip, molecularly imprinted polymer, sensor, explosives.

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