Cross-reactive, self-encoded polymer film arrays for sensor applications. Issue 86 (31st August 2016)

• Record Type: Journal Article
• Authors: Fitzgerald, Jessica E.; Zhu, Jintao; Bravo-Vasquez, Juan Pablo; Fenniri, Hicham
• Is Part Of: RSC advances. Volume 6:Issue 86(2016)
• Page Start: 82616
• Page End: 82624
• Publication Date: 2016-08-31
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c6ra13874h
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : Simple and versatile spectroscopically-encoded styrene-based polymers are the basis for advanced e-Nose sensor array technology. Abstract : The development of chemical sensors continues to be an active area of research, especially for the development of a practical electronic nose. Here, we present a spectroscopic chemical sensor based on an array of 64 self-encoded polymer films deposited on a microfabricated silicon substrate. The polymer arrays were analyzed by FTIR and Raman spectroscopy before and after exposure to a series of organic volatiles to monitor changes in their vibrational fingerprints. We show here that the spectroscopic changes of self-encoded polymer films can be used to distinguish between volatile organic analytes. Changes induced in the sensor arrays by the analyte vapor were denoted by a spectroscopic response of the self-encoded polymer sensors and transformed into a response pattern by multivariate data analysis using partial least squares regression. The results indicated that the polymer sensors provide a unique and reproducible pattern for each analyte vapor and have the potential to be used in the fabrication of a novel electronic nose device.