![]() ![]() ![]() The reaction was observed to occur 1.5 to 7.4 times faster in 9–35 micron droplets compared to the same reaction conducted in a macroscale container. The collision of two droplets produces a pH jump and the reaction kinetics are quantified optically and in situ by measuring the formation of azamonardine. The reaction is initiated by colliding two droplets levitated in a branched quadrupole trap, which allows the reaction to be observed in individual droplets where the size, concentration, and charge are carefully controlled. Dopamine reacts with resorcinol to form a fluorescent product azamonardine and is used as a model system to examine how droplet interfaces accelerate reaction kinetics. In the majority of these studies the exact acceleration mechanism is unknown but the droplet interface is thought to play a significant role. ![]() Recent studies report the dramatic acceleration of chemical reactions in micron-sized compartments. ![]()
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