Multi-wavelength transparent microfluidic device for UV-visible illumination and X-ray scattering studies of photoactive systems

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Authors: Benedetta Marmiroli, Sumea Klokić, Barbara Sartori, Marie Reißenbüchel, Alessio Turchet, Heinz Amenitsch
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Abstract

isomerization of azobenzene and fluoro-azobenzene. X-ray transparency was verified through small-angle X-ray scattering (SAXS) measurements on hemoglobin and CO-ligated hemoglobin, both of which are sensitive to quaternary structural changes. These results confirm the suitability of the device for resolving protein structures and detecting subtle conformational changes of the type commonly encountered in photo-induced modulation. Initial proof-of-concept measurements demonstrate the feasibility of temperature-jump (T-jump) experiments, and the same architecture is readily extendable to time resolved pump-probe studies, providing a versatile platform for studying structural evolution in liquid samples using synchrotron SAXS.

Fields of Study & Subjects

Hemoglobin structure and function Spectroscopy and Quantum Chemical Studies Innovative Microfluidic and Catalytic Techniques Innovation

Publication details

Journal / source
Lab on a Chip
Volume
26
Issue
9
Pages
2697–2708
Publication date
1 January 2026
Language
EN