An optical oxygen sensor based on the photoluminescent quenching of palladium tetrakis(4-carboxyphenyl)porphyrin (PdTCPP) self-assembled membrane on an alumina plate has been developed. The luminescence intensity of PdTCPP membrane decreased with increase of oxygen concentration, indicating that this membrane is a highly sensitive device for oxygen concentration. The signal changes of this membrane are large enough to allow quantification of oxygen with good sensitivity (I-0/I-100 > 3). The response times of the sensor are 36 s on going from argon to oxygen and 148 s from oxygen to argon. This is a photostable sensing membrane that exhibits minimal decrease (ca 5%) in initial intensity after continuous irradiation for 24 h.
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Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Oil & Gas Field Appl Chem Key Lab Sichuan Prov, Chengdu 610500, Sichuan, Peoples R ChinaSouthwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Liu, Shuai
Hu, Yue
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Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R ChinaSouthwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Hu, Yue
Hu, Cun
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Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R ChinaSouthwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Hu, Cun
Xiong, Yan
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Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Oil & Gas Field Appl Chem Key Lab Sichuan Prov, Chengdu 610500, Sichuan, Peoples R ChinaSouthwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Xiong, Yan
Duan, Ming
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Southwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China
Oil & Gas Field Appl Chem Key Lab Sichuan Prov, Chengdu 610500, Sichuan, Peoples R ChinaSouthwest Petr Univ, Coll Chem & Chem Engn, Chengdu 610500, Sichuan, Peoples R China