UV Light Stereoselective Limonene Sensor Using Electrospun PVP Composite Nanofibers
Author(s)
Date Issued
2024
Type
conferenceObject
Volume
97(1)
Journal
Abstract
This study explored the design of an innovative stereoselective S-(-)-limonene sensor according to the molecular imprinting polymer (MIP) strategy using UV light to generate in situ polymer cross-linking. A conductive composite nanofibrous fabric of polyvinylpyrrolidone (PVP), polyacrylic acid (PAA) and carbon nanotubes (MWCNTs) was deposited on purpose in a single step by electrospinning onto interdigital microelectrodes. The nanostructured layer was investigated by microscopy (SEM, TEM, AFM) and infrared transmission measurements (FTIR). The resulting sensing features (carried out in environmental air) seemed to be mainly dependent on the peculiarity of the nanostructure and the phenomena occurring at the interfaces between the cross-linked PVP–PAA/cavity shape and MWCNTs. Furthermore, the specificity of the host–guest interaction was proven by the sensitivity, selectivity and stereoselectivity of the sensor when exposed to similar monoterpenes ((±)-α-pinene and (±)-linalool) and the enantiomer of limonene (R(+)), respectively.
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proceedings-97-00131.pdf
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Format
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Checksum (MD5)
41bccc7406623b3e4b3fb9b066f18804
Project(s)
Bando Regione Lazio “Progetti Gruppi di Ricerca 2020” - GeCoWEB A0375-2020-36670 del 28/10/2020
Conference(s)
XXXV EUROSENSORS Conference