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Enhancement of oxygen sensing performance of metalloporphyrin film modified with nano Al₂O₃ powder.

ABSTRACT: In this work, the metalloporphyrin film of PtOEP/Poly (St-co-TFEMA) modified by nano Al₂O₃ powder was prepared, and the enhancement performance of oxygen sensing was studied in detail. It was verified that the modified film extended the residence time of oxygen through the characterization of SEM. The phosphorescence intensity changes with the content of Al₂O₃ and PtOEP were studied. The Stern-Volmer equations before and after modification of Al₂O₃ powder was compared. It was found that the linearity of the calibration curve was still high, but the oxygen sensitivity value of K_SV was significantly improved due to the increase of quenching probability between indicator and oxygen. Finally, the stability test shows that the Al₂O₃@PtOEP/Poly (St-co-TFEMA) oxygen sensing film presents a strong anti-photo-bleaching ability, and the response time is shortened.

SUBMITTER: Zhang H

PROVIDER: S-EPMC10372395 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature

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Enhancement of oxygen sensing performance of metalloporphyrin film modified with nano Al2O3 powder.

Zhang Honglin H Zhang Ke K Zhiguo Zhiguo Z Hao Jian J

Heliyon 20230717 7

In this work, the metalloporphyrin film of PtOEP/Poly (St-co-TFEMA) modified by nano Al2O3 powder was prepared, and the enhancement performance of oxygen sensing was studied in detail. It was verified that the modified film extended the residence time of oxygen through the characterization of SEM. The phosphorescence intensity changes with the content of Al2O3 and PtOEP were studied. The Stern-Volmer equations before and after modification of Al2< ...[more]

PMID: 37519686

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