Referenced Dual Pressure- and Temperature-Sensitive Paint for Digital Color Camera Read Out

Authors

  • Dr. Lorenz H. Fischer,

    1. Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstraße 93051 Regensburg (Germany), Fax: (+49) 941-943-4064
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  • Cüneyt Karakus,

    1. Functional Polymers Group and Institute of Polymer Technology, University of Wuppertal, Gaußstraße 20, 42097 Wuppertal (Germany), Fax: (+49) 202-439-3880
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  • Dr. Robert J. Meier,

    1. Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstraße 93051 Regensburg (Germany), Fax: (+49) 941-943-4064
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  • Prof. Dr. Nikolaus Risch,

    1. Organic Chemistry, University of Paderborn, Warburger Straße 100, 33098 Paderborn (Germany)
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  • Prof. Dr. Otto S. Wolfbeis,

    1. Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstraße 93051 Regensburg (Germany), Fax: (+49) 941-943-4064
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  • Prof. Dr. Elisabeth Holder,

    Corresponding author
    1. Functional Polymers Group and Institute of Polymer Technology, University of Wuppertal, Gaußstraße 20, 42097 Wuppertal (Germany), Fax: (+49) 202-439-3880
    • Functional Polymers Group and Institute of Polymer Technology, University of Wuppertal, Gaußstraße 20, 42097 Wuppertal (Germany), Fax: (+49) 202-439-3880
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  • Priv.-Doz. Dr. Michael Schäferling

    Corresponding author
    1. Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstraße 93051 Regensburg (Germany), Fax: (+49) 941-943-4064
    • Institute of Analytical Chemistry, Chemo- and Biosensors, University of Regensburg, Universitätsstraße 93051 Regensburg (Germany), Fax: (+49) 941-943-4064
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Abstract

The first fluorescent material for the referenced simultaneous RGB (red green blue) imaging of barometric pressure (oxygen partial pressure) and temperature is presented. This sensitive coating consists of two platinum(II) complexes as indicators and a reference dye, each of which is incorporated in appropriate polymer nanoparticles. These particles are dispersed in a polyurethane hydrogel and spread onto a solid support. The emission of the (oxygen) pressure indicator, PtTFPP, matches the red channel of a RGB color camera, whilst the emission of the temperature indicator [PtII(Br-thq)(acac)] matches the green channel. The reference dye, 9,10-diphenylanthracene, emits in the blue channel. In contrast to other dual-sensitive materials, this new coating allows for the simultaneous imaging of both indicator signals, as well as the reference signal, in one RGB color picture without having to separate the signals with additional optical filters. All of these dyes are excitable with a 405 nm light-emitting diode (LED). With this new composite material, barometric pressure can be determined with a resolution of 22 mbar; the temperature can be determined with a resolution of 4.3 °C.

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