Effects of metal salts on structural, electrical and gas-sensing properties of crown-ether-substituted phthalocyanines and related compounds

  • John D. Wright*
  • , Philippe Roisin
  • , G. Patricia Rigby
  • , Edurne Erkizia
  • , Roeland J.M. Nolte
  • , Stephen C. Thorpe
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The effects of nitrogen dioxide on the semiconductivity of crown-ether-substituted phthalocyanines and related aza-crown phthalocyanines in both dry and humid conditions are reported, for films deposited from chloroform solution and doped with different metal salts. Humidity changes the response to NO2 from a p-type conductivity increase to an n-type decrease. Replacing one oxygen atom in each crown ring by N-acetyl blocks the crown cavity and minimises effects of water and added salts. Replacing more oxygens with N-tosyl groups leads to strong steric effects and very poor conductivity in all environments. The effects of doping with other metal salts are also discussed.

Original languageEnglish
Pages (from-to)301-305
Number of pages5
JournalSensors and Actuators B: Chemical
Volume16
Issue number1-3
DOIs
Publication statusPublished - Oct 1993
Externally publishedYes

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