纳米AlO粉末修饰的金属卟啉薄膜氧传感性能的增强。

Zhang Honglin, Zhang Ke, Zhiguo Zhiguo, Hao Jian

College of General Education, Guangzhou Huali College, Guangzhou, 511325, China.

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China.

Heliyon. 2023 Jul 17;9(7):e18300. doi: 10.1016/j.heliyon.2023.e18300. eCollection 2023 Jul.

In this work, the metalloporphyrin film of PtOEP/Poly (St-co-TFEMA) modified by nano AlO 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 AlO and PtOEP were studied. The Stern-Volmer equations before and after modification of AlO powder was compared. It was found that the linearity of the calibration curve was still high, but the oxygen sensitivity value of was significantly improved due to the increase of quenching probability between indicator and oxygen. Finally, the stability test shows that the AlO@PtOEP/Poly (St-co-TFEMA) oxygen sensing film presents a strong anti-photo-bleaching ability, and the response time is shortened.

在本工作中，制备了由纳米AlO粉末改性的PtOEP/聚（苯乙烯-共-三氟甲基丙烯酸乙酯）金属卟啉薄膜，并详细研究了其氧传感增强性能。通过扫描电子显微镜表征证实改性薄膜延长了氧气的停留时间。研究了磷光强度随AlO和PtOEP含量的变化。比较了AlO粉末改性前后的Stern-Volmer方程。发现校准曲线的线性仍然很高，但由于指示剂与氧气之间猝灭概率的增加，氧灵敏度值显著提高。最后，稳定性测试表明AlO@PtOEP/聚（苯乙烯-共-三氟甲基丙烯酸乙酯）氧传感薄膜具有很强的抗光漂白能力，且响应时间缩短。