TY - JOUR
T1 - Oxygen-sensitive reverse-phase optode membrane using silica gel-adsorbed ruthenium(II) complex embedded in gelatin film
AU - Choi, Martin M.F.
AU - Xiao, Dan
N1 - Funding Information:
The research described in this paper was made possible in part by the 1998 Research Fund from the Royal Society of Chemistry, UK.
PY - 1999/4/22
Y1 - 1999/4/22
N2 - An oxygen-sensitive reverse-phase optode membrane consisting of tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ditetrakis(4-chlorophenyl)borate adsorbed on silica gel and embedded in a gelatin film has been successfully fabricated and used to continuously monitor dissolved oxygen in organic solvents. The optode membrane shows a very strong and stable pink emission when excited by blue light and it is efficiently quenched by molecular oxygen. The response of the sensor displays typical nonlinear Stern-Volmer behaviour when the dissolved oxygen concentration in organic solvents is at high levels. But the sensor is most sensitive at lower oxygen levels and is linear in the range 0-1.14, 0-2.10 and 0-0.53mM for dissolved oxygen in acetone, dimethyl formamide and toluene, respectively. The t95 response times of the sensor are 10s on going from nitrogen-saturated toluene to air-saturated toluene and 22s on going from air-saturated toluene to nitrogen-saturated toluene. The sensor has good reproducibility, high photostability, no hysteresis, good precision and long lifetime. Copyright (C) 1999 Elsevier Science B.V.
AB - An oxygen-sensitive reverse-phase optode membrane consisting of tris(4,7-diphenyl-1,10-phenanthroline)ruthenium(II) ditetrakis(4-chlorophenyl)borate adsorbed on silica gel and embedded in a gelatin film has been successfully fabricated and used to continuously monitor dissolved oxygen in organic solvents. The optode membrane shows a very strong and stable pink emission when excited by blue light and it is efficiently quenched by molecular oxygen. The response of the sensor displays typical nonlinear Stern-Volmer behaviour when the dissolved oxygen concentration in organic solvents is at high levels. But the sensor is most sensitive at lower oxygen levels and is linear in the range 0-1.14, 0-2.10 and 0-0.53mM for dissolved oxygen in acetone, dimethyl formamide and toluene, respectively. The t95 response times of the sensor are 10s on going from nitrogen-saturated toluene to air-saturated toluene and 22s on going from air-saturated toluene to nitrogen-saturated toluene. The sensor has good reproducibility, high photostability, no hysteresis, good precision and long lifetime. Copyright (C) 1999 Elsevier Science B.V.
KW - Dissolved oxygen
KW - Organic solvents
KW - Reverse-phase optode membrane
KW - Ruthenium(II) complex
UR - http://www.scopus.com/inward/record.url?scp=0032954989&partnerID=8YFLogxK
U2 - 10.1016/S0003-2670(99)00040-9
DO - 10.1016/S0003-2670(99)00040-9
M3 - Journal article
AN - SCOPUS:0032954989
SN - 0003-2670
VL - 387
SP - 197
EP - 205
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 2
ER -