TY - JOUR
T1 - Enhancement of luminescence-based optical fiber oxygen sensors by tuning the distance between fluorophore layers
AU - de Acha, Nerea
AU - Elosúa, César
AU - Matías, Ignacio R.
AU - Arregui, Francisco J.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2017
Y1 - 2017
N2 - In this work, different luminescence-based optical fiber oxygen sensors have been fabricated by means of the Layer-by-Layer nanoassembly technique. The sensing material employed has been a platinum metalloporphyrin, platinum tetrakis pentafluorophenylporphine (Pt-TFFP), which has been entrapped into anionic micelles. Poly(diallyldimethylammonium chloride) (PDDA), polyethyleneimine (PEI) and poly(allylamine hydrochloride) (PAH) have been utilized as cationic polyelectrolytes. With the aim of avoiding self-quenching and optimizing sensors in terms of sensitivity and linearity of the calibration curves, the spacing (thickness) between the fluorophore films has been tuned by introducing poly(acrylic acid) (PAA) between the cationic layers. The morphology of the resultant sensors has been analyzed with an Atomic Force Microscope. It has been found that the number of spacing layers between the luminescent ones is determined by the features of the employed polycation.
AB - In this work, different luminescence-based optical fiber oxygen sensors have been fabricated by means of the Layer-by-Layer nanoassembly technique. The sensing material employed has been a platinum metalloporphyrin, platinum tetrakis pentafluorophenylporphine (Pt-TFFP), which has been entrapped into anionic micelles. Poly(diallyldimethylammonium chloride) (PDDA), polyethyleneimine (PEI) and poly(allylamine hydrochloride) (PAH) have been utilized as cationic polyelectrolytes. With the aim of avoiding self-quenching and optimizing sensors in terms of sensitivity and linearity of the calibration curves, the spacing (thickness) between the fluorophore films has been tuned by introducing poly(acrylic acid) (PAA) between the cationic layers. The morphology of the resultant sensors has been analyzed with an Atomic Force Microscope. It has been found that the number of spacing layers between the luminescent ones is determined by the features of the employed polycation.
KW - Fluorophore distance
KW - Layer-by-Layer nanoassembly
KW - Luminescent sensor
KW - Self-quenching
UR - https://www.scopus.com/pages/publications/85027953682
U2 - 10.1016/j.snb.2016.12.081
DO - 10.1016/j.snb.2016.12.081
M3 - Article
AN - SCOPUS:85027953682
SN - 0925-4005
VL - 248
SP - 836
EP - 847
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
ER -