Emission based oxygen sensing approach with tris(2,2′-bipyridyl)ruthenium(II)chloride in green chemistry reagents: room temperature ionic liquids
Original Paper First Online: 11 February 2008 Received: 11 July 2007 Accepted: 18 December 2007 Abstract.
Room temperature ionic liquids doped with tris(2,2′-bipyridyl)ruthenium(II)chloride together with chemically and biochemically inert perfluoro chemicals (PFCs) have been used for the first time for optical O
2 sensing purposes.
The response to oxygen of the Ru complex in 1-methyl-3-butylimidazolium tetrafluoroborate (RTIL-I) and 1-methyl-3-butylimidazolium bromide (RTIL-II) has been evaluated in terms of sensitivity, stability, regeneration ability and response time. The response times were 2 and 5 s, respectively, and the signal changes were reversible. Better oxygen solubility, enhanced molar absorption coefficients and photostabilies were found for the RTILs. The stability the Ru complex in RTILs was tested over 12 months and it is when stored in the ambient air of the laboratory.
Keywords: Room temperature ionic liquid; ionic liquid; optical oxygen sensing; fluorescence; Ru(bpy) 3 complex
Correspondence: Kadriye Ertekin, Fen-Edebiyat Fakultesi, Dokuz Eylul Universitesi, Kimya Bolumu, 35160 Buca, Izmir, Turkey
References Wolfbeis, O S 1991Fiber optic chemical sensors and biosensors CRC Press Boca Raton 29 Google Scholar Sharma, A, Wolfbeis, O S 1988 Fiber optic oxygen sensor based on fluorescence quenching and energy transfer Appl Spect 42 1009 CrossRef Google Scholar Lee, E D, Werner, T C, Seitz, R 1987 Luminescence ratio indicators for oxygen Anal Chem 59 279 CrossRef Google Scholar Ishiji, T, Kaneko, M 1995 Photoluminescence of pyrenebutyric acid incorporated into silicone film as a technique in luminescent oxygen sensing Analyst 120 1633 CrossRef Google Scholar McDonagh, C, Bowe, P, Mongey, K, MacCraith, B D 2002 Characterisation of porosity and sensor response times of sol-gel-derived thin films for oxygen sensor applications J Non-Cryst Solids 306 138 CrossRef Google Scholar Bukowski, R M, Davenport, M D, Titus, A H, Bright, F V 2006 O 2-Responsive chemical sensors based on hybrid xerogels that contain fluorinated precursors Appl Spectrosc 60 951 CrossRef Google Scholar Hartmann, P, Leiner, M J P, Lippitsch, M E 1995 Luminescence quenching behavior of an oxygen sensor based on a Ru(II) complex dissolved in polystyrene Anal Chem 67 88 CrossRef Google Scholar Sasso, M G, Quina, F H, Bechera, E J H 1986 Ruthenium(II) tris(bipridyl) ion as a luminescent probe for oxygen uptake Anal Biochem 156 239 CrossRef Google Scholar Singer, E, Duveneck, G L, Ehrat, M, Widmer, M 1994 Fiber optic sensor for oxygen determination in liquids Sensor Actuator 41 542 CrossRef Google Scholar Carraway, E R, Demas, J N, DeGraff, B A, Bacon, J R 1991 Luminescence quenching mechanism for microheterogeneous systems Anal Chem 63 332 CrossRef Google Scholar Xu, W Y, Kneas, K A, Demas, J N, DeGraff, B A 1996 Oxygen sensors based on luminescence quenching of metal complexes: osmium complexes suitable for laser diode excitation Anal Chem 68 2605 CrossRef Google Scholar Borisov, S M, Klimant, I 2007 Ultrabright oxygen optodes based on cyclometalated iridium(III) coumarin complexes Anal Chem 79 501 CrossRef Google Scholar Papkovsky, D B, Ponomarev, G V, Trettnak, W, O’Leary, P 1995 Phosphorescent complexes of porphyrin ketones: optical properties and application to oxygen sensing Anal Chem 67 4112 CrossRef Google Scholar Mills, A, Lepre, A 1997 Controlling the response characteristics of luminescent porphyrin plastic film sensors for oxygen Anal Chem 69 4653 CrossRef Google Scholar Malins, C, Fanni, S, Glever, H G, Vos, J G, MacCraith, B D 1999 The preparation of a sol-gel glass oxygen sensor incorporating a covalently bound fluorescent dye Anal Commun 36 3 CrossRef Google Scholar Amao, Y, Miyashita, T, Okura, I 2000 Optical oxygen sensing based on the luminescence change of metalloporphyrins immobilized in styrene-pentafluoro styrene copolymer film Analyst 125 871 CrossRef Google Scholar Amao, Y 2003 Probes and polymers for optical sensing of oxygen Microchim Acta 143 1 CrossRef Google Scholar Amao, Y, Okura, I 2003 Optical oxygen sensing materials: chemisorption film of ruthenium(II) polypyridyl complexes attached to anionic polymer Sensor Actuat B 88 162 CrossRef Google Scholar Anthony, J L, Maginn, E J, Brennecke, J F 2002 Solubilities and thermodynamic properties of gases in the ionic liquid 1- n-butyl-3-methylimidazolium hexafluorophosphate J Phys Chem B 106 7315 CrossRef Google Scholar Camper, D, Scovazzo, P, Koval, C, Noble, R 2004 Gas solubilities in room temperature ionic liquids Ind Eng Chem Res 43 3049 CrossRef Google Scholar Fuller, J, Carlin, R T, Delong, H C, Haworth, D 1994 Structure of 1-ethyl-3-methylimidazolium hexafluorophosphate – model for room-temperature molten-salts J Chem Soc Chem Commun 3 299 CrossRef Google Scholar Bonhote, P, Dias, A P, Armand, M, Papageorgiou, N, Gratzel, M 1996 Hydrophobic, highly conductive ambient-temperature molten salts Inorg Chem 35 1168 CrossRef Google Scholar Welton, T 1998 Room temperature ionic liquids, solvents for synthesis and catalysis Chem Rev 99 2071 CrossRef Google Scholar Del Sesto, R E, Corley, C, Robertson, A, Wilkes, J S 1994 Tetraalkylphosphonium-based ionic liquids J Organomet Chem 690 2536 CrossRef Google Scholar Jacquemin, J, Gomes, M F C, Husson, P 2006 Solubility of carbon dioxide, ethane, methane, oxygen, nitrogen, hydrogen, argon, and carbon monoxide in 1-butyl-3-methylimidazolium tetrafluoroborate between temperatures 283 K and 343 K and at pressures close to atmospheric J Chem Thermodyn 38 490 CrossRef Google Scholar Kumelan, J, Kamps, A P S, Urukova, I, Tuma, D, Maurer, G 2005 Solubility of oxygen in the ionic liquid [bmim][PF6]: experimental and molecular simulation results J Chem Thermodyn 37 595 CrossRef Google Scholar Bonhote, P, Dias, A P, Armand, M, Papageorgiou, N, Gratzel, M 1996 Hydrophobic, highly conductive ambient-temperature molten salts Inorg Chem 35 1168 CrossRef Google Scholar Welton, T 1999 Room-temperature ionic liquids: solvents for synthesis and catalysis Chem Rev 99 2071 CrossRef Google Scholar Holbrey, J D, Seddon, K R 1999 Ionic liquids Review Clean Products Processes 1 223 Google Scholar Lau, R M, Rantwijk, F V, Seddon, K R, Sheldon, R A 2000 Lipase-catalyzed reactions in ionic liquids Org Lett 2 4189 CrossRef Google Scholar Sweeny, B K, Peters, D G 2001 Cyclic voltammetric study of the catalytic behavior of nickel(I) salen electrogenerated at a glassy carbon electrode in an ionic liquid (1-butyl-3-methylimidazolium tetrafluoroborate, BMIM+BF4-) Electrochem Commun 3 712 CrossRef Google Scholar Oter, O, Ertekin, K, Topkaya, D, Alp, S 2006 Emission-based optical carbon dioxide sensing with HPTS in green chemistry reagents: room-temperature ionic liquids Analyt Bioanal Chem 386 1225 CrossRef Google Scholar Oter, O, Ertekin, K, Topkaya, D, Alp, S 2006 Room temperature ionic liquids as optical sensor matrix materials for gaseous and dissolved CO 2 Sensor Actuat B-Chem 117 295 CrossRef Google Scholar Riess, J G 1994 Highly fluorinated systems for oxygen transport, diagnosis and drug delivery Colloid Surface A 84 33 CrossRef Google Scholar Wesseler, E P, Iltis, R, Clark, L C 1977 The solubility of oxygen in highly fluorinated liquids J Fluorine Chem 9 137 CrossRef Google Scholar Mattiasson, B, Adlercreutz, P 1987 Perfluorochemicals in biotechnology Tibtech 5 250 Google Scholar King, A T, Mulligan, B J, Lowe, K C 1989 Perfluorochemicals and cell culture Biotechnology 7 1037 Google Scholar Lowe, K C 2002 Perfluorochemical respiratory gas carriers: benefits to cell culture systems J Fluorine Chem 118 19 CrossRef Google Scholar Williams, A T R, Winfield, A, Miller, J N 1983 Relative fluorescence quantum yields using a computer-controlled luminescence spectrometer Analyst 108 1067 CrossRef Google Scholar Castellano, F N, Heimer, T A, Tandhasetti, M T, Meyer, G J 1994 Photophysical properties of ruthenium polypyridyl photonic SiO 2 gels Chem Mater 6 1041 CrossRef Google Scholar