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

SENSORS AND ACTUATORS B-CHEMICAL

卷:239

Article

de Acha, Nerea¹  Elosua, Cesar^1,3  Martinez, Deborah²  Hernaez, Miguel¹  Matias, Ignacio R.^1,3  Arregui, Francisco J.^1,3 

[1] Univ Publ Navarra, Dept Elect & Elect Engn, Arrosadia Campus S-N, E-31006 Pamplona, Spain

[2] Autonomous Univ Tamaulipas, Fiber & Integrated Opt Lab, Reynosa, Tamaulipas, Mexico

[3] Univ Publ Navarra, Inst Smart Cities, E-13006 Pamplona, Spain

关键词: Luminescence oxygen sensor;    Layer-by-Layer nanoassembly;    Optical fiber;    Nano morphology;    Polycations;   

DOI  :  10.1016/j.snb.2016.08.077

来源: Elsevier

【 摘 要 】

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. (C) 2016 Published by Elsevier B.V.

【 授权许可】

Free