The formation of homogeneous thin films of the tetrakis(4-sulfonatophenyl) porphyrin (TPPS) by irradiation with ultraviolet (UV) light was discussed. It was observed that the deposited samples exhibit extinction and fluorescence emission features which are strongly dependent upon the addition of basic or acidic vapors, being deeply affected by the nature of the counterion. It was found that thin film of TPPS can be obtained by UV-induced photodecomposition of other halogenated solvents. The possibility of tuning the photophysical and optical properties of the sample by deposition from different solvents and its sensing characteristics can be promising for the development of solid-state sensors.
Sensing behavior of tetrakis(4-sulfonatophenyl)porphyrin thin films
DE LUCA, Giovanna;ROMEO, Andrea;MONSU' SCOLARO, Luigi
2006-01-01
Abstract
The formation of homogeneous thin films of the tetrakis(4-sulfonatophenyl) porphyrin (TPPS) by irradiation with ultraviolet (UV) light was discussed. It was observed that the deposited samples exhibit extinction and fluorescence emission features which are strongly dependent upon the addition of basic or acidic vapors, being deeply affected by the nature of the counterion. It was found that thin film of TPPS can be obtained by UV-induced photodecomposition of other halogenated solvents. The possibility of tuning the photophysical and optical properties of the sample by deposition from different solvents and its sensing characteristics can be promising for the development of solid-state sensors.Pubblicazioni consigliate
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