Comparative study of polymeric matrices embedding oxygen-sensitive fluorophores by means of Layer-by-Layer nanosassembly

de Acha, Nerea, Elosúa, César, Martínez, Deborah, Hernáez, Miguel, Matías, Ignacio R. and Arregui, Francisco J. (2017) Comparative study of polymeric matrices embedding oxygen-sensitive fluorophores by means of Layer-by-Layer nanosassembly. Sensors and Actuators, B: Chemical, 239. pp. 1124-1133. ISSN 0925-4005

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Abstract

In this work, a comparative study of luminescent optical fiber oxygen sensors fabricated by means of Layer-by-Layer nanoassembly technique (LbL) has been carried out. The oxygen-sensitive fluorophore is the same in all the cases, the metalloporphyrin platinum tetrakis pentafluorophenylporphin (Pt-TFPP), which was deposited using LbL method by entrapping it into anionic micelles formed with a surfactant. As cationic counterpart to form the anionic-cationic bilayer, different polyelectrolytes acting as the polymeric matrices embedding the sensing material have been studied: poly(diallyldimethylammonium chloride) (PDDA), polyethyleneimine (PEI) and poly(allylamine hydrochloride) (PAH). Absorbance spectra, contact angle, Atomic Force Microscope and Scanning Electronic Microscope analysis were performed on the sensing films. The kinetics, resolution and sensitivity of the sensors for different number of bilayers were also determined. It has been found a remarkable difference on these characteristics depending on the polymer used.

Item Type: Article
Uncontrolled Keywords: layer-by-layer nanoassembly,luminescence oxygen sensor,nano morphology,optical fiber,polycations
Faculty \ School: Faculty of Science > School of Mathematics
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 20 May 2019 10:30
Last Modified: 27 Oct 2020 00:56
URI: https://ueaeprints.uea.ac.uk/id/eprint/71061
DOI: 10.1016/j.snb.2016.08.077

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