Investigation of free base, Mg, Sn, and Zn substituted porphyrin LB films as gas sensors for organic analytes.
The visible absorption spectra of various substituted porphyrin compounds both in chloroform solution and as Langmuir-Blodgett (LB) solid-state films have been investigated. The porphyrin compounds examined were the Zn, Sn, Mg, and free base derivatives of 5,10,15,20-tetrakis[3,4-bis(2-ethylhexyloxy)phenyl]-21H,23H-porphine (EHO). Changes in the absorption spectra of these materials induced by their exposure to various organic compounds are reported with a view toward determining whether this is a useful approach toward an optical gas sensor.
Dunbar
Alan D F
AD
Department of Physics and Astronomy, University of Sheffield, Hicks Building, Hounsfield Road, Sheffield S3 7RH, UK. a.dunbar@shef.ac.uk
Richardson
Tim H
TH
McNaughton
Alex J
AJ
Hutchinson
Jordan
J
Hunter
Chris A
CA