High spatiotemporal control of spontaneous reactions using ultrasound-triggered composite droplets.
Achieving high spatial and temporal control over a spontaneous reaction is a particularly challenging task with potential breakthroughs in various fields of research including surface patterning and drug delivery. We report here an exceptionally effective method that allows attaining such control. This method relies on a remotely triggered ultrasound-induced release of a reactant encapsulated in a composite microdroplet of liquid perfluorohexane. More specifically, the demonstration was achieved by locally applying a focused 2.25 MHz transducer onto a microfluidic channel in which were injected composite microdroplets containing a solution of an azidocoumarin and an external flow containing a reactive alkyne.
Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI), - UMR 8231 - ESPCI ParisTech/CNRS/PSL* Research University , 10 rue Vauquelin, 75231 Paris Cedex 05, France.
Marine
M
Bezagu
Claudia
C
Errico
Victor
V
Chaulot-Talmon
Fabrice
F
Monti
Mickael
M
Tanter
Patrick
P
Tabeling
Janine
J
Cossy
Stellios
S
Arseniyadis
Olivier
O
Couture