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Sensors 2009, 9(7), 5277-5297; doi:10.3390/s90705277

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

1,* , 1
1 CNR Istituto di Struttura della Materia, Sede di Montelibretti, P.B. 10, 00016 Monterotondo Stazione, Italy 2 CNR Istituto di Struttura della Materia, Sede di TorVergata, Via del Fosso del Cavaliere, 100 - 00133 Rome, Italy
* Author to whom correspondence should be addressed.
Received: 20 May 2009 / Revised: 26 June 2009 / Accepted: 2 July 2009 / Published: 6 July 2009
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Italy)
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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: phthalocyanine; X-ray reflectivity; NO2; sensors phthalocyanine; X-ray reflectivity; NO2; sensors
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Paoletti, A.M.; Pennesi, G.; Rossi, G.; Generosi, A.; Paci, B.; Albertini, V.R. Titanium and Ruthenium Phthalocyanines for NO2 Sensors: A Mini-Review. Sensors 2009, 9, 5277-5297.

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