Reflectance anisotropy spectra of porphyrin thin films (30 monolayers) show a permanent change in their line shape when porphyrins are exposed to some specific analytes (e.g., amines). From this experimental evidence, we concluded that a molecular package adjustment occurred in the film upon interaction with the volatile compound, most likely in the outermost layers. This result is of paramount importance for the consequent application of these films in optical gas-sensors. Consequently, this system could be used as a prototype for optical gas-sensing of aggressive analytes or, more ambitiously, to investigate the porphyrinanalyte interaction. © 2009 Society of Photo-Optical Instrumentation Engineers.

Alteration of optical anisotropy by adsorption of volatile molecules on ordered metalloporphyrins layers

BUSSETTI, GIANLORENZO;
2009-01-01

Abstract

Reflectance anisotropy spectra of porphyrin thin films (30 monolayers) show a permanent change in their line shape when porphyrins are exposed to some specific analytes (e.g., amines). From this experimental evidence, we concluded that a molecular package adjustment occurred in the film upon interaction with the volatile compound, most likely in the outermost layers. This result is of paramount importance for the consequent application of these films in optical gas-sensors. Consequently, this system could be used as a prototype for optical gas-sensing of aggressive analytes or, more ambitiously, to investigate the porphyrinanalyte interaction. © 2009 Society of Photo-Optical Instrumentation Engineers.
2009
Molecule-molecule interaction; Optical anisotropy; Organic ordered layer; Porphyrins; Sensor; Volatile organic compound; Electronic, Optical and Magnetic Materials; Condensed Matter Physics
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1000684
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