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TADF-Emitting Zn(II)-Benzoporphyrin: an indicator for simultaneous sensing of oxygen and temperature

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avis › Tidsskriftartikel › Forskning › peer review

Dokumenter

DOI

  • Silvia Zieger
  • Andreas Steinegger, Graz University of Technology
    • ,
  • Ingo Klimant, Graz University of Technology
    • ,
  • Sergey M Borisov, Graz University of Technology

A new luminescent indicator is presented that enables simultaneous measurement of oxygen and temperature at a single wavelength. The indicator, a Zn(II)-alkylsulfone substituted meso-tetraphenyltetrabenzoporphyrin, emits prompt and ther-mally activated delayed fluorescence (TADF). TADF is sensitive towards oxygen and temperature and is referenced against prompt fluorescence that is not affected by oxygen. The information on both parameters is accessed from the decay time of TADF and the temperature-dependent ratio of TADF and prompt fluorescence. Sensor foils, made from poly(styrene-co-acrylonitrile) and the indicator dye, enable temperature-compensated trace oxygen sensing (0.002 -6 hPa pO2) at ambient conditions. Compared to the previously reported dual sensors based on two emitters, the new sensor significantly simplifies the experimental setup and eliminates risks of different leaching or photobleaching rates by utilizing only one indicator dye and operating at a single wavelength.

OriginalsprogEngelsk
TidsskriftACS Sensors
Vol/bind5
Nummer4
Sider (fra-til)1020-1027
Antal sider8
ISSN2379-3694
DOI
StatusUdgivet - apr. 2020

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