Sensors (Jul 2009)

Titanium and Ruthenium Phthalocyanines for NO2 Sensors: A Mini-Review

  • Valerio Rossi Albertini,
  • Barbara Paci,
  • Amanda Generosi,
  • Gentilina Rossi,
  • Giovanna Pennesi,
  • Anna Maria Paoletti

DOI
https://doi.org/10.3390/s90705277
Journal volume & issue
Vol. 9, no. 7
pp. 5277 – 5297

Abstract

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This review presents studies devoted to the description and comprehension of phenomena connected with the sensing behaviour towards NO2 of films of two phthalocyanines, titanium bis-phthalocyanine and ruthenium phthalocyanine. Spectroscopic, conductometric, and morphological features recorded during exposure to the gas are explained and the mechanisms of gas-molecule interaction are also elucidated. The review also shows how X-ray reflectivity can be a useful tool for monitoring morphological parameters such as thickness and roughness that are demonstrated to be sensitive variables for monitoring the exposure of thin films of sensor materials to NO2 gas.

Keywords