Fabrication and performance evaluation of highly sensitive hybrid sol–gel-derived oxygen sensor films based on a fluorinated precursor

Tuning oxygen sensitivity of ruthenium complex exploiting silver nanoparticles

“…The calibration plots were nonlinear within the measured oxygen concentrations [15]. Not only the ruthenium based dyes but also other transition metal complexes and porphyrin derivatives developed to date exhibit nonlinear calibration data or Stern-Volmer plots especially for the large working ranges [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][20][21][22][23][24][25]. This is due to the uncontrollable high sensitivity of the exploited dyes towards oxygen.…”

“…The ruthenium complexes were intensively used in silicone [3], sol-gel [26][27][28][29][30], ORMOSILs (organically modified silicates) or in modified ORMOSILs [12,31,32]. A detailed comparison of the performances of such optical oxygen sensors in terms of matrix materials, sensitivity, working range and detection limit has been reported earlier [25].…”

“…Most of the optical oxygen sensors work on the principle of luminescence quenching of different types of organic dyes in oxygen permeable solid matrices. These organic dyes are pyrene and its derivatives [2], pyrenebutyricacid, quinoline and phenanthrene [3], transition metal complexes of osmium [4], rhenium [5,6], platinum [7,8], palladium and iridium [9,10], ruthenium [11][12][13][14][15][16][17], polypyridine complexes and metalloporphyrins [18]. Covalently assembled monolayer of 61-(p-hydroxyphenylmethano) fullerene molecules has also been used for oxygen sensing [19].…”

Ratiometric Dissolved Oxygen Sensors Based on Ruthenium Complex Doped with Silver Nanoparticles

“…The oxygen-sensing dye is excited and then emits light of which the intensity, decay time, or wavelength is dependent on the oxygen concentration. Several dyes have been used for luminescence-based oxygen sensors, such as polycyclic aromatic hydrocarbons [2], quinoline, pyrenebutyricacid [3], transition metal–ligand complexes of palladium and iridium [4,5], osmium [6], rhenium [7,8], ruthenium [9,10,11,12,13,14,15], platinum [16,17], metalloporphyrins, and polypyridine complexes [18]. The luminescence 61-(p-hydroxyphenyl methano) fullerene has also been reported for oxygen sensing by covalently immobilization [19].…”

Micro- and nanostructured sol-gel-based materials for optical chemical sensing (2005–2015)

“…All these O 2 sensors exhibited very good filmto-film reproducibility, linear calibration plots, enhanced O 2 sensitivity, humidity-insensitivity and good longterm stability. In addition, it was shown that O 2 sensor films based on these fluorinated matrices exhibit a smaller error in O 2 reading due to photobleaching than sensor films based on non-fluorinated sol-gel precursors [75]. Fluorinated sol-gel-based materials have been also combined with longer lifetime platinum tetrakis pentrafluoropheny porphine (PtTFPP), platinum octaethylporphine (PtOEP), [meso-tetrakis(pentafluorophenyl) porphyinato] platinum(II) (PtF20TPP), Pt(II) meso-tetra(N-methyl-4-pyridyl)porphyrin tetrachloride phosphorescent complexes resulting in even more sensitive O 2 sensors [76][77][78].…”