Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia
Halogenated metal phthalocyanines are promising materials for the manufacture of active layers of chemiresistive sensors for the detection of various gases. Despite the high interest in such sensors, there are few systematic studies of the position of halogen substituents in phthalocyanine macroring...
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MDPI AG
2023-09-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/9/1773 |
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| author | Darya Klyamer Alexandr Sukhikh Dmitry Bonegardt Pavel Krasnov Pavel Popovetskiy Tamara Basova |
| author_facet | Darya Klyamer Alexandr Sukhikh Dmitry Bonegardt Pavel Krasnov Pavel Popovetskiy Tamara Basova |
| author_sort | Darya Klyamer |
| collection | DOAJ |
| description | Halogenated metal phthalocyanines are promising materials for the manufacture of active layers of chemiresistive sensors for the detection of various gases. Despite the high interest in such sensors, there are few systematic studies of the position of halogen substituents in phthalocyanine macroring on the chemiresistive response of their films to gases. In this work, we prepared and studied films of novel tetrachlorosubstituted vanadyl phthalocyanine derivatives with Cl substituents in the peripheral (VOPcCl<sub>4</sub>-p) and nonperipheral (VOPcCl<sub>4</sub>-np) positions of the phthalocyanine ring as active layers of chemiresistive sensors to reveal the effect of the position of substituents on their structure and sensor response to low concentrations of NH<sub>3</sub>. It was shown that the films of VOPcCl<sub>4</sub>-p exhibited a noticeably higher sensor response to NH<sub>3</sub> than the VOPcCl<sub>4</sub>-np ones. The limit of detection of NH<sub>3</sub> was 0.7 ppm. The sensing layers demonstrated a reversible sensor response at room temperature with fairly low response/recovery times. It was also demonstrated that NH<sub>3</sub> can be detected in the presence of various interfering gases (CO<sub>2</sub> and H<sub>2</sub>) and some volatile organic vapors, as well as in a mixture of gases with a composition close to exhaled air. |
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| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T22:27:10Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-8d0dcb7ac6194474bd48258732ff1a6a2023-11-19T12:00:25ZengMDPI AGMicromachines2072-666X2023-09-01149177310.3390/mi14091773Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of AmmoniaDarya Klyamer0Alexandr Sukhikh1Dmitry Bonegardt2Pavel Krasnov3Pavel Popovetskiy4Tamara Basova5Nikolaev Institute of Inorganic Chemistry SB RAS, 3 Lavrentiev Pr., 630090 Novosibirsk, RussiaNikolaev Institute of Inorganic Chemistry SB RAS, 3 Lavrentiev Pr., 630090 Novosibirsk, RussiaNikolaev Institute of Inorganic Chemistry SB RAS, 3 Lavrentiev Pr., 630090 Novosibirsk, RussiaInternational Research Center of Spectroscopy and Quantum Chemistry, Siberian Federal University, 26 Kirensky St., 660074 Krasnoyarsk, RussiaNikolaev Institute of Inorganic Chemistry SB RAS, 3 Lavrentiev Pr., 630090 Novosibirsk, RussiaNikolaev Institute of Inorganic Chemistry SB RAS, 3 Lavrentiev Pr., 630090 Novosibirsk, RussiaHalogenated metal phthalocyanines are promising materials for the manufacture of active layers of chemiresistive sensors for the detection of various gases. Despite the high interest in such sensors, there are few systematic studies of the position of halogen substituents in phthalocyanine macroring on the chemiresistive response of their films to gases. In this work, we prepared and studied films of novel tetrachlorosubstituted vanadyl phthalocyanine derivatives with Cl substituents in the peripheral (VOPcCl<sub>4</sub>-p) and nonperipheral (VOPcCl<sub>4</sub>-np) positions of the phthalocyanine ring as active layers of chemiresistive sensors to reveal the effect of the position of substituents on their structure and sensor response to low concentrations of NH<sub>3</sub>. It was shown that the films of VOPcCl<sub>4</sub>-p exhibited a noticeably higher sensor response to NH<sub>3</sub> than the VOPcCl<sub>4</sub>-np ones. The limit of detection of NH<sub>3</sub> was 0.7 ppm. The sensing layers demonstrated a reversible sensor response at room temperature with fairly low response/recovery times. It was also demonstrated that NH<sub>3</sub> can be detected in the presence of various interfering gases (CO<sub>2</sub> and H<sub>2</sub>) and some volatile organic vapors, as well as in a mixture of gases with a composition close to exhaled air.https://www.mdpi.com/2072-666X/14/9/1773vanadyl phthalocyanineschemiresistive sensorsgas sensorsammonia |
| spellingShingle | Darya Klyamer Alexandr Sukhikh Dmitry Bonegardt Pavel Krasnov Pavel Popovetskiy Tamara Basova Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia Micromachines vanadyl phthalocyanines chemiresistive sensors gas sensors ammonia |
| title | Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia |
| title_full | Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia |
| title_fullStr | Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia |
| title_full_unstemmed | Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia |
| title_short | Thin Films of Chlorinated Vanadyl Phthalocyanines as Active Layers of Chemiresistive Sensors for the Detection of Ammonia |
| title_sort | thin films of chlorinated vanadyl phthalocyanines as active layers of chemiresistive sensors for the detection of ammonia |
| topic | vanadyl phthalocyanines chemiresistive sensors gas sensors ammonia |
| url | https://www.mdpi.com/2072-666X/14/9/1773 |
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