Details

Autor(en) / Beteiligte

• Gulino, Antonino
• Giuffrida, Salvatore
• Mineo, Placido
• Purrazzo, Michele
• Scamporrino, Emilio
• Ventimiglia, Giorgio
• van der Boom, Milko E
• Fragalà, Ignazio

Titel

Photoluminescence of a Covalent Assembled Porphyrin-Based Monolayer:  Optical Behavior in the Presence of O2

Ist Teil von

• The journal of physical chemistry. B, 2006-08, Vol.110 (33), p.16781-16786

Ort / Verlag

United States: American Chemical Society

Erscheinungsjahr

2006

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The optical O2 recognition capability of a covalently assembled monolayer (CAM) of 5,10,15-tri-{p-dodecanoxyphenyl}-20-(p-hydroxyphenyl) porphyrin on silica-based substrates was studied at room temperature by both UV−vis and photoluminescence (PL) measurements. The optical properties of this robust monolayer setup appear to be highly sensitive to the O2 concentration in N2. Both UV−vis and PL measurements were used to study the porphyrin−oxygen interactions. The monolayer-based sensor exhibits a short response time and can be restored within seconds. The oxygen-induced luminescence quenching of the monolayer involves both ground and excited states. The proposed mechanism responsible for the luminescence quenching involves different kinds of interactions between the monolayer and O2.