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Figure 5
Spectroscopic measurements using the flow cell. (a) Absorbance spectra recorded from samples of purified ba3-type CcO from T. thermophilus in solution. Red: CcO is purged of oxygen and reduced. Black: CcO in the oxidized state. (b) Absorbance spectra recorded from a slurry of CcO microcrystals held in a flow cell. Red: CcO is purged of oxygen and reduced. Black: CcO in the oxidized state. (c) Modified catcher, used to hold aligned optical fibres incoming from either side of the X-ray transparent capillary. This either allows absorption spectra to be recorded from samples as they pass by or allows light to be transported to the sample to activate photo-sensitive samples (inset). (d) Device for measuring absorption spectra from samples suspended in a glass syringe prior to injection using the flow cell. This is achieved using aligned optical fibres incoming from either side of the transparent syringe.

Journal logoJOURNAL OF
APPLIED
CRYSTALLOGRAPHY
ISSN: 1600-5767
Volume 56| Part 2| April 2023| Pages 449-460
https://doi.org/10.1107/S1600576723001036
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