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Luminescence Lifetime Imaging of Chemical Sensors - A Comparison between Time-Domain and Frequency-Domain Based Camera Systems

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

  • Klaus Koren
  • Maria Moßhammer, Københavns Universitet
  • ,
  • Vincent V. Scholz
  • Sergey M. Borisov, Graz University of Technology
  • ,
  • Gerhard Holst, PCO AG
  • ,
  • Michael Kühl, Københavns Universitet, Climate Change Cluster, University of Technology Sydney

Luminescence lifetime based imaging is still the most reliable method for generating chemical images using chemical sensor technology. However, only few commercial systems are available that enable imaging lifetimes within the relevant nanosecond to microsecond range. In this technical note we compare the performance of an older time-domain (TD) based camera system with a frequency-domain (FD) based camera system regarding their measuring characteristics and applicability for O 2 and pH imaging in environmental samples and with different indicator dye systems emitting in the visible and near-infrared part of the spectrum. We conclude that the newly introduced FD imaging system delivers comparable if not better results than its predecessor, now enabling robust and simple chemical imaging based on FD luminescence lifetime measurements.

TidsskriftAnalytical Chemistry
Sider (fra-til)3233-3238
Antal sider6
StatusUdgivet - 2019

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