Photoluminescence of a covalent assembled porphyrin-based monolayer: Optical behavior in the presence of O2

Antonino Gulino; Salvatore Giuffrida; Placido Mineo; Michele Purrazzo; Emilio Scamporrino; Giorgio Ventimiglia; Milko E. Van Der Boom; Ignazio Fragalà

doi:10.1021/jp062967g

Photoluminescence of a covalent assembled porphyrin-based monolayer: Optical behavior in the presence of O₂

Antonino Gulino, Salvatore Giuffrida, Placido Mineo, Michele Purrazzo, Emilio Scamporrino, Giorgio Ventimiglia, Milko E. Van Der Boom, Ignazio Fragalà

Weizmann Institute of Science, Israel

Research output: Contribution to journal › Article › peer-review

91 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	16781-16786
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	110
Issue number	33
DOIs	https://doi.org/10.1021/jp062967g
Publication status	Published - Aug 24 2006

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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Photoluminescence of a covalent assembled porphyrin-based monolayer : Optical behavior in the presence of O₂. / Gulino, Antonino; Giuffrida, Salvatore; Mineo, Placido; Purrazzo, Michele; Scamporrino, Emilio; Ventimiglia, Giorgio; Van Der Boom, Milko E.; Fragalà, Ignazio.

In: Journal of Physical Chemistry B, Vol. 110, No. 33, 24.08.2006, p. 16781-16786.

Research output: Contribution to journal › Article › peer-review

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