structure and sensor properties of thin ordered solid films结构和传感器性能的薄下令坚实的电影.pdf

Sensors 2009, 9, 7733-7752; doi:10.3390/ OPEN ACCESS sensors ISSN 1424-8220 /journal/sensors Review Structure and Sensor Properties of Thin Ordered Solid Films Jadwiga Sołoducho *, Joanna Cabaj and Agnieszka Świst Department of Medicinal Chemistry and Microbiology, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland; E-Mails: joanna.cabaj@pwr.wroc.pl (J.C.); agnieszka.swist@pwr.wroc.pl (A.S.) * Author to whom correspondence should be addressed; E-Mail: jadwiga.soloducho@pwr.wroc.pl; Tel.: +48-71-320-2891; Fax: +48-71-320-4315. Received: 28 July 2009; in revised form: 9 September 2009 / Accepted: 9 September 2009 / Published: 28 September 2009 Abstract: Miniaturized gas sensors and biosensors based on nanostructured sensing elements have attracted considerable interest because these nanostructured materials can be used to significantly improve sensor sensitivity and the response time. We report here on a generic, reversible sensing platform based on hybrid nanofilms. Thin ordered Langmuir-Blodgett (LB) films built of fluorene derivatives were used as effective gas sensors for both oxidative and reductive analytes. A novel immobilization method based on thin LB films as a matrix has been developed for construction of sensing protein layers. Biomolecules can often be incorporated into and immobilized on Langmuir-Blodgett films using adsorption methods or by covale