Total Internal Reflection Transient Absorption Microscopy: An Online Detection Method for Microfluidics.
Brandon A ColonMuhammad Redwan HassanAmirus SaleheenChristopher A BakerTessa R CalhounPublished in: The journal of physical chemistry. A (2020)
Microreactors have garnered widespread attention for their tunability and precise control of synthetic parameters to efficiently produce target species. Despite associated advances, a lack of online detection and optimization methods has stalled the progression of microfluidic reactors. Here we employ and characterize a total internal reflection transient absorption microscopy (TIRTAM) instrument to image excited state dynamics on a continuous flow device. The experiments presented demonstrate the capability to discriminate between different chromophores as well as in differentiating the effects of local chemical environments that a chromophore experiences. This work presents the first such online transient absorption measurements and provides a new direction for the advancement and optimization of chemical reactions in microfluidic devices.
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