TY  - JOUR
A1  - Mehr, Fatemeh Naderi
A1  - Grigoriev, Dmitry
A1  - Heaton, Rebecca
A1  - Baptiste, Joshua
A1  - Stace, Anthony J.
A1  - Puretskiy, Nikolay
A1  - Besley, Elena
A1  - Böker, Alexander
T1  - Self-assembly behavior of oppositely charged inverse bipatchy microcolloids
JF  - Small : nano micro
N2  - A directed attractive interaction between predefined "patchy" sites on the surfaces of anisotropic microcolloids can provide them with the ability to self-assemble in a controlled manner to build target structures of increased complexity. An important step toward the controlled formation of a desired superstructure is to identify reversible electrostatic interactions between patches which allow them to align with one another. The formation of bipatchy particles with two oppositely charged patches fabricated using sandwich microcontact printing is reported. These particles spontaneously self-aggregate in solution, where a diversity of short and long chains of bipatchy particles with different shapes, such as branched, bent, and linear, are formed. Calculations show that chain formation is driven by a combination of attractive electrostatic interactions between oppositely charged patches and the charge-induced polarization of interacting particles.
KW  - electrostatic interactions
KW  - patchy particles
KW  - polyelectrolyte inks
KW  - sandwich microcontact printing
KW  - self-assembly
Y1  - 2020
U6  - https://doi.org/10.1002/smll.202000442
SN  - 1613-6810
SN  - 1613-6829
VL  - 16
IS  - 14
PB  - Wiley-VCH
CY  - Weinheim
ER  -