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Article

Sensing Behavior of Metal-Free Porphyrin and Zinc Phthalocyanine Thin Film towards Xylene-Styrene and HCl Vapors in Planar Optical Waveguide

by
Nuerguli Kari
1,
Marco Zannotti
2,*,
Rita Giovannetti
2,*,
Patigu Maimaiti
1,
Patima Nizamidin
1,
Shawket Abliz
1 and
Abliz Yimit
1,*
1
Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, China
2
School of Science and Technology, Chemistry Division, University of Camerino, 62032 Camerino, Italy
*
Authors to whom correspondence should be addressed.
Nanomaterials 2021, 11(7), 1634; https://doi.org/10.3390/nano11071634
Submission received: 20 March 2021 / Revised: 4 June 2021 / Accepted: 18 June 2021 / Published: 22 June 2021
(This article belongs to the Special Issue Nanostructured Materials for Gas Sensor Applications)
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Abstract

The sensing behavior of a thin film composed of metal-free 5, 10, 15, 20-tetrakis (p-hydroxy phenyl) porphyrin and zinc phthalocyanine complex towards m-xylene, styrene, and HCl vapors in a homemade planar optical waveguide (POWG), was studied at room temperature. The thin film was deposited on the surface of potassium ion-exchanged glass substrate, using vacuum spin-coating method, and a semiconductor laser light (532 nm) as the guiding light. Opto-chemical changes of the film exposing with hydrochloric gas, m-xylene, and styrene vapor, were analyzed firstly with UV-Vis spectroscopy. The fabricated POWG shows good correlation between gas exposure response and absorbance change within the gas concentration range 10–1500 ppm. The limit of detection calculated from the logarithmic calibration curve was proved to be 11.47, 21.08, and 14.07 ppm, for HCl gas, m-xylene, and styrene vapors, respectively. It is interesting to find that the film can be recovered to the initial state with trimethylamine vapors after m-xylene, styrene exposures as well as HCl exposure. The gas-film interaction mechanism was discussed considering protonation and π-π stacking with planar aromatic analyte molecules.
Keywords: metal-free porphyrin; zinc phthalocyanine; spin-coated thin film; planar optical waveguide sensor; HCl vapor; xylene-styrene vapors metal-free porphyrin; zinc phthalocyanine; spin-coated thin film; planar optical waveguide sensor; HCl vapor; xylene-styrene vapors
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MDPI and ACS Style

Kari, N.; Zannotti, M.; Giovannetti, R.; Maimaiti, P.; Nizamidin, P.; Abliz, S.; Yimit, A. Sensing Behavior of Metal-Free Porphyrin and Zinc Phthalocyanine Thin Film towards Xylene-Styrene and HCl Vapors in Planar Optical Waveguide. Nanomaterials 2021, 11, 1634. https://doi.org/10.3390/nano11071634

AMA Style

Kari N, Zannotti M, Giovannetti R, Maimaiti P, Nizamidin P, Abliz S, Yimit A. Sensing Behavior of Metal-Free Porphyrin and Zinc Phthalocyanine Thin Film towards Xylene-Styrene and HCl Vapors in Planar Optical Waveguide. Nanomaterials. 2021; 11(7):1634. https://doi.org/10.3390/nano11071634

Chicago/Turabian Style

Kari, Nuerguli, Marco Zannotti, Rita Giovannetti, Patigu Maimaiti, Patima Nizamidin, Shawket Abliz, and Abliz Yimit. 2021. "Sensing Behavior of Metal-Free Porphyrin and Zinc Phthalocyanine Thin Film towards Xylene-Styrene and HCl Vapors in Planar Optical Waveguide" Nanomaterials 11, no. 7: 1634. https://doi.org/10.3390/nano11071634

APA Style

Kari, N., Zannotti, M., Giovannetti, R., Maimaiti, P., Nizamidin, P., Abliz, S., & Yimit, A. (2021). Sensing Behavior of Metal-Free Porphyrin and Zinc Phthalocyanine Thin Film towards Xylene-Styrene and HCl Vapors in Planar Optical Waveguide. Nanomaterials, 11(7), 1634. https://doi.org/10.3390/nano11071634

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