HALOGENATED PLATINUM PORPHYRINS AS SENSING MATERIALS FOR LUMINESCENCE-BASED OXYGEN SENSORS
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Abstractluminescent platinum porphyrins with halogen substituents on the meso-aryl and pyrrole rings Pt(TDCPP), Pt(TFMPP) and Pt(Br8TMP) [TDCPP=meso-tetra(2,6-dichlorophenyl)porphyrin, TFMPP=meso-tetra(3,5-bis(tri-fluoromethyl)phenyl)porphyrin, Br8TMP = meso-tetramesityl-beta-octabromoporphyrin] were immobilized inside silicone rubber films and tested as sensors for optical measurement of oxygen concentrations in the gas phase. The presence of halogenated substituents was found to increase the photostability of the metalloporphyrins. On the other hand, heavy halogen atoms such as bromine cause a decrease in the quantum yield and lifetime. The films have a moderately fast response towards changes in oxygen concentration and are immune to common gaseous interferents such as chlorine, sulfur dioxide and halothane at concentrations well above those normally encountered.
All Author(s) ListLEE WWS, WONG KY, LI XM, LEUNG YB, CHAN CS, CHAN KS
Journal nameJournal of Materials Chemistry
Year1993
Month10
Day1
Volume Number3
Issue Number10
PublisherROYAL SOC CHEMISTRY
Pages1031 - 1035
ISSN0959-9428
eISSN1364-5501
LanguagesEnglish-United Kingdom
KeywordsMETALLOPORPHYRIN; PORPHYRIN; SENSOR
Web of Science Subject CategoriesChemistry; Chemistry, Physical; CHEMISTRY, PHYSICAL; Materials Science; Materials Science, Multidisciplinary; MATERIALS SCIENCE, MULTIDISCIPLINARY

Last updated on 2020-29-05 at 00:58