TY - JOUR
T1 - Comparative study of polymeric matrices embedding oxygen-sensitive fluorophores by means of Layer-by-Layer nanosassembly
AU - de Acha, Nerea
AU - Elosúa, César
AU - Martínez, Deborah
AU - Hernáez, Miguel
AU - Matías, Ignacio R.
AU - Arregui, Francisco J.
PY - 2017/2
Y1 - 2017/2
N2 - 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.
AB - 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.
KW - Layer-by-Layer nanoassembly
KW - Luminescence oxygen sensor
KW - Nano morphology
KW - Optical fiber
KW - Polycations
UR - http://www.scopus.com/inward/record.url?scp=84983483180&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2016.08.077
DO - 10.1016/j.snb.2016.08.077
M3 - Article
AN - SCOPUS:84983483180
SN - 0925-4005
VL - 239
SP - 1124
EP - 1133
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
ER -