« Previous Abstract"Lizard epidermal gland secretions. II. Chemical characterization of the generation gland secretion of the sungazer, Cordylus giganteus"    Next AbstractFlory-Huggins Photonic Sensors for the Optical Assessment of Molecular Diffusion Coefficients in Polymers »

ACS Appl Mater Interfaces

Title:		Label-Free Vapor Selectivity in Poly(p-Phenylene Oxide) Photonic Crystal Sensors
Author(s):		Lova P; Bastianini C; Giusto P; Patrini M; Rizzo P; Guerra G; Iodice M; Soci C; Comoretto D;
Address:		"Energy Research Institute at NTU (ERI@AN), Interdisciplinary Graduate School, Nanyang Technological University , Singapore 639798. Dipartimento di Chimica e Chimica Industriale, Universita degli Studi di Genova , 16126 Genova, Italy. Dipartimento di Fisica, Universita degli Studi di Pavia , 27100 Pavia, Italy. Dipartimento di Chimica e Biologia, Universita di Salerno , 84084 Salerno, Italy. Istituto per la Microelettronica e Microsistemi, Consiglio Nazionale delle Ricerche , 95121 Napoli, Italy. Centre for Disruptive Photonic Technologies, TPI, SPMS, Nanyang Technological University , Singapore 637371"
Journal Title:		ACS Appl Mater Interfaces
Year:		2016
Volume:		20161111
Issue:		46
Page Number:		31941 - 31950
DOI:		10.1021/acsami.6b10809
ISSN/ISBN:		1944-8252 (Electronic) 1944-8244 (Linking)
Abstract:		"The lack of sensors for low cost, extensive, and continuous detection of vapor pollutants is a serious concern for health and safety in industrialized urban areas. Colorimetric sensors, such as distributed Bragg reflectors made of polymers, could achieve this task thanks to their low cost and easy signal transduction but are typically affected by low vapor permeability and lack of selectivity without chemical labeling. Here we demonstrate all-polymer Bragg multilayers for label-free selective detection of organic volatile compounds. The system exploits the ability of amorphous poly(p-phenylene oxide), PPO, to uptake large amount of guest molecules and to form cocrystalline phases with distinct optical properties. Bragg stacks embedding PPO active layers show selective colorimetric response to vapors of carbon tetrachloride and aromatic homologues, which can be revealed by the naked eye"
Keywords:		colorimetric sensor label-free selectivity photonic crystal sensors poly(p-phenylene oxide) vapor detection;
Notes:		"PubMed-not-MEDLINELova, Paola Bastianini, Chiara Giusto, Paolo Patrini, Maddalena Rizzo, Paola Guerra, Gaetano Iodice, Mario Soci, Cesare Comoretto, Davide eng 2016/11/04 ACS Appl Mater Interfaces. 2016 Nov 23; 8(46):31941-31950. doi: 10.1021/acsami.6b10809. Epub 2016 Nov 11"