Ionic liquid-based compound droplet microfluidics for 'on-drop' separations and sensing.
We present a new and general scheme for analytical applications of droplet-based microfluidics in which flowing droplets function not only as isolated reaction flasks, but are also capable of on-drop separation and sensing. To demonstrate this, we choose ionic liquids as designer fluids whose chemical and physical properties can be tailored in task-specific fashion. We create aqueous-ionic liquid compound droplets with tunable structures using an imidazolium-based ionic liquid, and present two analytical applications-separation of a binary aqueous mixture of organic dyes and dynamic pH sensing-to highlight the salient features of this scheme. By combining designer fluids with designer microfluidic emulsions, our work opens up a rich space of exploration for analytical microfluidics.
Barikbin
Zahra
Z
Singapore-MIT Alliance, Singapore.
Rahman
Md Taifur
MT
Parthiban
Pravien
P
Rane
Anandkumar S
AS
Jain
Vaibhav
V
Duraiswamy
Suhanya
S
Lee
S H Sophia
SH
Khan
Saif A
SA
D002623:Chemistry Techniques, Analytical / Q000295:instrumentation*; D004396:Coloring Agents / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D006863:Hydrogen-Ion Concentration; D052578:Ionic Liquids / Q000737:chemistry*; D046210:Microfluidic Analytical Techniques; D009930:Organic Chemicals / Q000032:analysis / Q000737:chemistry / Q000302:isolation & purification; D014867:Water / Q000737:chemistry
D004396:Coloring Agents; D052578:Ionic Liquids; D009930:Organic Chemicals; D014867:Water