A Dual Luminescent Sensor Material for Simultaneous Imaging of Pressure and Temperature on Surfaces

A novel kind of composite material for simultaneous luminescent determination of air pressure and temperature is presented. The dual sensor consists of a fluorinated platinum porphyrin complex (PtTFPP) as an oxygen-sensitive probe, and of the highly temperature-sensitive europium complex Eu(tta)3(dpbt) as temperature probe. Both are incorporated into different polymer microparticles to control response characteristics and to avoid interferences. Encapsulation of PtTFPP in poly(styrene-co-acrylonitrile) (PSAN) results in a broad dynamic range from 0.05 to 2.00 bar for pressure measurements. The europium complex was incorporated into poly(vinyl chloride) to reduce the cross sensitivity towards oxygen. This system represents a new class of luminescent sensor system, where the signals are separated via the different luminescence lifetimes of the indicators. It is possible to monitor the emission of the temperature-sensitive probe by means of time-resolved fluorescence imaging without interferences, because the luminescence lifetime of the temperature indicator is tenfold longer than that of the oxygen indicator. The temperature image can then be used to compensate cross sensitivity of the pressure indicator towards temperature. In combination with an appropriate time-resolved measurement technique, this material enables simultaneous imaging of pressure (or oxygen partial pressure) and temperature distributions on surfaces. It is distinguished from other approaches of dual pressure and temperature sensitive paints because it avoids the need of signal separation by application of different cameras or by use of different optical filters or light sources.

[1]  Yang Sun,et al.  Efficient two-photon-sensitized luminescence of a europium(III) complex. , 2005, Angewandte Chemie.

[2]  R. Kopelman,et al.  Development of a submicrometer optical fiber oxygen sensor. , 1995, Analytical chemistry.

[3]  Martin Gouterman,et al.  Correcting lifetime measurements for temperature , 1999 .

[4]  Larry R. Dalton,et al.  Dual luminophor pressure sensitive paint. II. Lifetime based measurement of pressure and temperature , 2003 .

[5]  P. Seybold,et al.  Surface-sensitized luminescence , 1983 .

[6]  O. Wolfbeis,et al.  Luminescence Lifetime Imaging of Oxygen, pH, and Carbon Dioxide Distribution Using Optical Sensors , 2000 .

[7]  O. Wolfbeis,et al.  Fiber optical fluorosensor for determination of halothane and or oxygen , 1985 .

[8]  Colette McDonagh,et al.  Temperature-corrected pressure-sensitive paint measurements using a single camera and a dual-lifetime approach , 2002 .

[9]  G. Crosby.  Luminescent Organic Complexes of the Rare Earths , 1966 .

[10]  Ingo Klimant,et al.  Optical measurement of oxygen and temperature in microscale: strategies and biological applications , 1997 .

[11]  Christian Krause,et al.  Composite Material for Simultaneous and Contactless Luminescent Sensing and Imaging of Oxygen and Carbon Dioxide , 2006 .

[12]  Jennifer W. Parker,et al.  Fiber-optic sensors for pH and carbon dioxide using a self-referencing dye , 1993 .

[13]  Ingo Klimant,et al.  Determination of oxygen gradients in engineered tissue using a fluorescent sensor. , 2002, Biotechnology and bioengineering.

[14]  Ichiro Okura,et al.  Oxygen sensing based on lifetime of photoexcited triplet state of platinum porphyrin-polystyrene film using time-resolved spectroscopy , 2000 .

[15]  K. Asai,et al.  Advanced lifetime PSP imaging system for pressure and temperature field measurement , 2006 .

[16]  Gregory D. Phelan,et al.  Europium beta-diketonate temperature sensors: Effects of ligands, matrix, and concentration , 2004 .

[17]  Christian Krause,et al.  Composite Luminescent Material for Dual Sensing of Oxygen and Temperature , 2006 .

[18]  I Klimant,et al.  Inert phosphorescent nanospheres as markers for optical assays. , 2001, Bioconjugate chemistry.

[19]  R. Ballew,et al.  An error analysis of the rapid lifetime determination method for the evaluation of single exponential decays , 1989 .

[20]  J. Callis,et al.  Submillisecond response times of oxygen‐quenched luminescent coatings , 1993 .

[21]  David R. Walt,et al.  Bead-based Fiber-Optic Arrays , 2000, Science.

[22]  J. Callis,et al.  Dual-luminophor pressure-sensitive paint: I. Ratio of reference to sensor giving a small temperature dependency , 2003 .

[23]  J. Callis,et al.  Surface pressure field mapping using luminescent coatings , 1993 .

[24]  Willem Verboom,et al.  UvA-DARE (Digital Academic Repository) New sensitizer-modified calix[4]arenes enabling near-UV excitation of complexed luminescent lanthanide ions , 2001 .

[25]  Max E. Lippitsch,et al.  Fibre-optic oxygen sensor with the fluorescence decay time as the information carrier , 1988 .

[26]  Chi K. Chang,et al.  Electronic spectroscopy, photophysical properties, and emission quenching studies of an oxidatively robust perfluorinated platinum porphyrin. , 2004, Inorganic chemistry.

[27]  M. L. Bhaumik.  Quenching and Temperature Dependence of Fluorescence in Rare‐Earth Chelates , 1964 .

[28]  M. Landthaler,et al.  Effects of light fractionation and different fluence rates on photodynamic therapy with 5-aminolaevulinic acid in vivo , 2003, British Journal of Cancer.

[29]  Ingo Klimant,et al.  Luminescence Lifetime Temperature Sensing Based on Sol-Gels and Poly(acrylonitrile)s Dyed with Ruthenium Metal–Ligand Complexes , 1999 .

[30]  C. Klein,et al.  Application of pressure-sensitive paint for determination of the pressure field and calculation of the forces and moments of models in a wind tunnel , 2005 .

[31]  Jörg Enderlein,et al.  Time-Resolved Luminescence Imaging of Hydrogen Peroxide Using Sensor Membranes in a Microwell Format , 2003, Applied spectroscopy.

[32]  Sonja Draxler,et al.  Lifetime-based sensing:  influence of the microenvironment. , 1996, Analytical chemistry.

[33]  J. Callis,et al.  Luminescent thermometry for aerodynamic measurements , 1994 .

[34]  Benjamin A. DeGraff,et al.  Design and Applications of Highly Luminescent Transition Metal Complexes , 1991 .

[35]  Kazunori Mitsuo,et al.  Practical pressure-sensitive paint measurement system for industrial wind tunnels at JAXA , 2006 .

[36]  Benjamin A. DeGraff,et al.  Photophysics and photochemistry of oxygen sensors based on luminescent transition-metal complexes , 1991 .

[37]  J. W. Hofstraat,et al.  Bathochromicity of Michler’s ketone upon coordination with lanthanide(III) β-diketonates enables efficient sensitisation of Eu3+ for luminescence under visible light excitation† , 1999 .

[38]  Christian Klein,et al.  Pressure sensitive paint systems for pressure distribution measurements in wind tunnels and turbomachines , 2000 .

[39]  Ingo Klimant,et al.  Optical Fiber Sensor for Biological Oxygen Demand , 1994 .

[40]  K. Asai,et al.  Adsorptive pressure-sensitive coatings on porous anodized aluminium , 2004 .

[41]  O. Wolfbeis,et al.  Fluorescence quenching method for determination of two or three components in solution , 1983 .

[42]  Ichiro Okura,et al.  Photostable Optical Oxygen Sensing Material: Platinum Tetrakis(pentafluorophenyl)porphyrin Immobilized in Polystyrene , 1997 .