@article{MehrGrigorievHeatonetal.2020,
  author    = {Mehr, Fatemeh Naderi and Grigoriev, Dmitry and Heaton, Rebecca and Baptiste, Joshua and Stace, Anthony J. and Puretskiy, Nikolay and Besley, Elena and B{\"o}ker, Alexander},
  title     = {Self-assembly behavior of oppositely charged inverse bipatchy microcolloids},
  series = {Small : nano micro},
  volume    = {16},
  journal   = {Small : nano micro},
  number    = {14},
  publisher = {Wiley-VCH},
  address   = {Weinheim},
  issn      = {1613-6810},
  doi       = {10.1002/smll.202000442},
  pages     = {9},
  year      = {2020},
  abstract  = {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.},
  language  = {en}
}
@article{ZimmermannGrigorievPuretskiyetal.2018,
  author    = {Zimmermann, Marc and Grigoriev, Dmitry and Puretskiy, Nikolay and B{\"o}ker, Alexander},
  title     = {Characteristics of microcontact printing with polyelectrolyte ink for the precise preparation of patches on silica particles},
  series = {RSC Advances},
  volume    = {8},
  journal   = {RSC Advances},
  number    = {69},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {2046-2069},
  doi       = {10.1039/c8ra07955b},
  pages     = {39241 -- 39247},
  year      = {2018},
  abstract  = {This publication demonstrates the abilities of a precise and straightforward microcontact printing approach for the preparation of patchy silica particles. In a broad particle size range, it is possible to finely tune the number and parameters of three-dimensional patches like diameter and thickness using only polyethyleneimine ink, poly(dimethoxysilane) as stamp material and a suitable release solvent.},
  language  = {en}
}
@article{ZimmermannJohnGrigorievetal.2018,
  author    = {Zimmermann, Marc and John, Daniela and Grigoriev, Dmitry and Puretskiy, Nikolay and B{\"o}ker, Alexander},
  title     = {From 2D to 3D patches on multifunctional particles},
  series = {Soft matter},
  volume    = {14},
  journal   = {Soft matter},
  number    = {12},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {1744-683X},
  doi       = {10.1039/c8sm00163d},
  pages     = {2301 -- 2309},
  year      = {2018},
  abstract  = {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.},
  language  = {en}
}
@article{MehrGrigorievPuretskiyetal.2019,
  author    = {Mehr, Fatemeh Naderi and Grigoriev, Dmitry and Puretskiy, Nikolay and B{\"o}ker, Alexander},
  title     = {Mono-patchy zwitterionic microcolloids as building blocks for pH-controlled self-assembly},
  series = {Soft matter},
  volume    = {15},
  journal   = {Soft matter},
  number    = {11},
  publisher = {Royal Society of Chemistry},
  address   = {Cambridge},
  issn      = {1744-683X},
  doi       = {10.1039/c8sm02151a},
  pages     = {2430 -- 2438},
  year      = {2019},
  abstract  = {A directional molecular interaction between microcolloids can be achieved through pre-defined sites on their surface, patches, which might make them follow each other in a controlled way and assemble into target structures of more complexity. In this article, we report the successful generation and characterization of mono-patchy melamine-formaldehyde microparticles with oppositely charged patches made of poly(methyl vinyl ether-alt-maleic acid) or polyethyleneimine via microcontact printing. The study of their self-aggregation behavior in solution shows that by change of pH, particle dimers are formed via attractive electrostatic force between the patchy and non-patchy surface of the particles, which reaches its optimum at a specific pH.},
  language  = {en}
}