Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31477
Title: Halogenated platinum porphyrins as sensing materials for luminescence-based oxygen sensors
Authors: Lee, WWS
Wong, KY 
Li, XM
Leung, YB
Chan, CS
Chan, KS
Issue Date: 1993
Source: Journal of materials chemistry, 1993, v. 3, no. 10, p. 1031-1035
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.
Keywords: Metalloporphyrin
Porphyrin
Sensor
Publisher: Royal Society of Chemistry
Journal: Journal of materials chemistry 
ISSN: 0959-9428
EISSN: 1364-5501
DOI: 10.1039/jm9930301031
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