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

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 [Pt(II) (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.

Ligand‐Assisted Back Energy Transfer in Luminescent TbIII Complexes for Thermosensing Properties

“…[1] Specifically,l uminescentt hermosensors are expected to be useful for capturings urfacet emperature dynamics of vehicles, aircraft, and chemical reactors. [2,3] The sensing mechanism is based on the temperature-dependent luminescence intensities and lifetimes of organic compounds, [4][5][6] metal complexes, [7][8][9] and nanoparticles. [10][11][12] In particular, luminescent thermosensors that contain lanthanide complexesh ave attracted attention owing to their precise temperature imagingw ith narrow emission bands (full-width at half maximum (FWHM) < 10 nm) and long emission lifetimes (> 1 ms), which are based on the 4f-4f transitions.…”

Ryoji Noyori Prize: M. Shibasaki / New Year Honours: C. V. Robinson and S. E. Gibson / Clara Immerwahr Award: J. K. Edwards / Clemens Winkler Medal: Otto S. Wolfbeis / Board of Trustees, Volkswagen Foundation: T. Carell / AkzoNobel North America Science Award: K. Matyjaszewski

“…Wolfbeis and his research group are interested in topics including (bio)analytical chemistry, chemical (bio)sensors, and fluorescent probes. He has reported in Chemistry—A European Journal on a referenced dual pressure‐ and temperature‐sensitive paint for digital color camera read out,5a and his Communication on fluorescent pH‐sensitive nanoparticles was published in the Jubilee Issue of Angewandte Chemie 5b…”

Luminescence Lifetime Imaging of O₂ with a Frequency-Domain-Based Camera System

“…We would like to emphasize that this method is by no means limited to this application. Oxygen-sensitive optodes or sensor particles 27 in combination with various imaging methods have been used in medical research 32 , in bioprinting 33 , for pressure sensitive paints 34,35 , or to study photosynthetic systems 2,36,37 , just to name a few other fields of application.…”