Vol. 128, Issue 5, May 2011, pp.115-121

Langmuir-Schäfer Film of Calix[4]pyrrole Exhibiting Sensing Properties with Gas Anesthetic Agent Sevoflurane

Salvatore PETRALIA

Molecular Diagnostics Business Unit, Microfluidicis Division,

ST-Microelectronics Stradale Primosole, 50 - 95121 Catania, Italy

Tel.: +390957404388, fax: +390957403031

E-mail: salvatore.petralia@st.com

Received: 9 March 2011   /Accepted: 20 May 2011   /Published: 28 May 2011

Abstract: The first calix[4]pyrrole Langmuir-Schäfer (LS) film for the detection of fluorinated anesthetic agent sevoflurane, by Surface Plasmon Resonance (SPR) measurement was developed. The SPR signal confirms the formation of Langmuir-Schäfer film on gold substrate. This new sevoflurane gas sensor displays i) reversible sensing properties, reasonably explained by the formation of a structurally ordered LS thin films and by formation of a new hydrogen bond N-H-F, between calix[4]pyrrole and fluorine atom of neutral sevoflurane molecule; ii) fast response time and regeneration time at room temperature.

Keywords: Sevoflurane, Surface plasmon resonance, Langmuir-Schäfer film, Calix[4]pyrrole

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