TY  - JOUR
A1  - John, Daniela
A1  - Zimmermann, Marc
A1  - Böker, Alexander
T1  - Generation of 3-dimensional multi-patches on silica particles via printing with wrinkled stamps
JF  - Soft matter
N2  - A simple route towards patchy particles with anisotropic patches with respect to a different functionality and directionality is presented. This method is based on microcontact printing of positively charged polyethylenimine (PEI) on silica particles using wrinkled stamps. Due to the wrinkled surface, the number of patches on the particles as well as the distance between two patches can be controlled.
Y1  - 2018
U6  - https://doi.org/10.1039/c8sm00224j
SN  - 1744-683X
SN  - 1744-6848
VL  - 14
IS  - 16
SP  - 3057
EP  - 3062
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Zimmermann, Marc
A1  - John, Daniela
A1  - Grigoriev, Dmitry
A1  - Puretskiy, Nikolay
A1  - Böker, Alexander
T1  - From 2D to 3D patches on multifunctional particles
BT  - how microcontact printing creates a new dimension of functionality
JF  - Soft matter
N2  - A straightforward approach for the precise multifunctional surface modification of particles with three-dimensional patches using microcontact printing is presented. By comparison to previous works it was possible to not only control the diameter, but also to finely tune the thickness of the deposited layer, opening up the way for three-dimensional structures and orthogonal multifunctionality. The use of PEI as polymeric ink, PDMS stamps for microcontact printing on silica particles and the influence of different solvents during particle release on the creation of functional particles with three-dimensional patches are described. Finally, by introducing fluorescent properties by incorporation of quantum dots into patches and by particle self-assembly via avidin-biotin coupling, the versatility of this novel modification method is demonstrated.
Y1  - 2018
U6  - https://doi.org/10.1039/c8sm00163d
SN  - 1744-683X
SN  - 1744-6848
VL  - 14
IS  - 12
SP  - 2301
EP  - 2309
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -