Halogenated platinum porphyrins as sensing materials for luminescence-based oxygen sensors

Weekey Wai San Lee, Kwok Yin Wong, Xiang Ming Li, Yiu Bong Leung, Chi Shing Chan, Kin Shing Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

41 Citations (Scopus)

Abstract

luminescent 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(trifluoromethyl)phenyl)porphyrin, Br8TMP = meso-tetramesityl- β-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.
Original languageEnglish
Pages (from-to)1031-1035
Number of pages5
JournalJournal of Materials Chemistry
Volume3
Issue number10
DOIs
Publication statusPublished - 1 Jan 1993

Keywords

  • Metalloporphyrin
  • Porphyrin
  • Sensor

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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