© André Gröschel
Xiaolian Qiang
| Angew. Chemie Int. Ed.
© Wiley 2021

Janus nanodiscs with narrow size distribution

Janus nanoparticles have two faces with different physical properties and require special synthesic methods. ABC triblock terpolymers are intrinsically asymmetric and therefore ideally suited to form polymeric Janus nanoparticles. Combining microphase separation with SPG membrane emulsification ultimately yielded Janus nanodiscs with controllable size, as verified with SEM, AFM and TEM image analysis. SPG membranes with different pore sizes of 0.3µm, 0.8µm, and 2.0µm controlled the average disc diameter to around 0.19, 0.41 und 1.13 µm, while fixing the thickness to 55nm-60nm. We are currently studying these nanodiscs for their nanomechanical properties, diffusion behaviour and interfacial properties.

 

Publications

  • Nghiem T-L, Coban D, Tjaberings S, Gröschel AH. . ‘Recent Advances in the Synthesis and Application of Polymer Compartments for Catalysis.’ Polymers 12: 2190. doi: 10.3390/polym12102190.
  • Ghosh S, Glöckler E, Wölper C, Tjaberings A, Gröschel AH, Schulz S. . ‘Active Ga-catalysts for the ring opening homo- and copolymerization of cyclic esters, and copolymerization of epox- ide and anhydrides.’ Dalton Transactions 49: 13475-13486. doi: 10.1039/D0DT02831B.
  • Tjaberings S, Heidelmann M, Tjaberings A, Steinhaus A, Franzka S, Walkenfort B, Gröschel AH. . ‘Terpolymer Multicompartment Nanofibers as Templates for Hybrid Pt Double Helices.’ ACS applied materials & interfaces 12: 39586-39594. doi: 10.1021/acsami.0c10385.
  • Ghosh S, Glöckler E, Wölper C, Tjaberings A, Gröschel AH, Schulz S. . ‘Heteroleptic b-ketoiminate magnesium catalysts for the ROP of Lactide.’ Organometallics 2020. doi: 10.1039/D0DT02831B.
  • Nghiem T-L, Chakroun R, Janoszka N, Chen C, Klein K, Wong CK, Gröschel AH. . pH-Controlled Hierarchical Assembly/Disassembly of Multicompartment Micelles in Water.’ Macromolecular Rapid Communications 41: 202000301. doi: 10.1002/marc.202000301.
  • Wong CK, Heidelmann M, Dulle M, Qiang X, Förster S, Stenzel MH, Gröschel AH. . Vesicular Polymer Hexosomes Exhibit Topological Defects.’ Journal of the American Chemical Society 2020, No. 142: 10989–10995. doi: 10.1021/jacs.0c02009.
  • Qiang X, Franzka S, Dai X, Gröschel AH,. . ‘Multicompartment Microparticles of SBT Triblock Terpolymers through 3D Confinement Assembly.’ Macromolecules 53, No. 53: 4224-4233. doi: 10.1021/acs.macromol.0c00806.
  • Jiang Y, Chakroun R, Gu,P, Gröschel AH, Russell TP. . Soft Polymer Janus Nanoparticles at Liquid/Liquid Interfaces.’ Angewandte Chemie International Edition 59: 12751 –12755. doi: 10.1002/anie.202004162.
  • Gröschel TI, Wong CK, Haataja J., Dias M., Gröschel AH. . ‘Direct Observation of Topological Defects in Striped Block Copolymer Discs and Polymersomes.’ ACS Nano 14: 4829-4838. doi: 10.1021/acsnano.0c00718.
  • Wong C, Qiang X, Müller AHE, Gröschel AH,. . ‘Self-assembly of Block Copolymers into internally ordered Microparticles.’ Progress in Polymer Science 102: 101211. doi: 10.1016/j.progpolymsci.2020.101211.
  • Ghosh S, Wölper C, Tjaberings A, Gröschel AH, Schulz S. . ‘Syntheses, structures and catalytic activity of tetranuclear Mg complexes in the ROP of cyclic esters under industrially relevant conditions.’ Dalton Transactions 49: 375-387. doi: 10.1039/C9DT04359D.

  • Morits M, Verho T, Sorvari J, Liljeström V, Kostiainen MA, Gröschel AH, Ikkala O. . ‘Toughness and Fracture Properties in Nacre-Mimetic Clay/Polymer Nanocomposites.’ Advanced Functional Materials 27, No. 10. doi: 10.1002/adfm.201605378.
  • Morits M, McKee JR, Majoinen J, Malho JM, Houbenov N, Seitsonen J, Laine J, Gröschel AH, Ikkala O. . ‘Polymer Brushes on Cellulose Nanofibers: Modification, SI-ATRP, and Unexpected Degradation Processes.’ ACS Sustainable Chemistry & Engineering 5, No. 9: 7642-7650. doi: 10.1021/acssuschemeng.7b00972.
  • Gröschel AH, Walther A. . ‘Beyond the crew cut: Block copolymer micelles with inverted morphologies.’ Angewandte Chemie International Edition 37: 10992–10994. doi: 10.1002/anie.201703765.

  • Schütz MR, Kalo H, Lunkenbein T, Gröschel AH, Müller AH, Wilkie CA, Breu J. . Shear stiff, surface modified, mica-like nanoplatelets: A novel filler for polymer nanocomposites.’ Journal of Materials Chemistry 21, No. 32: 12110-12116. doi: 10.1039/c1jm11443c.
  • Hirao A, Matsuo Y, Oie T, Goseki R, Ishizone T, Sugiyama K, Gröschel AH, Müller AH. . ‘Facile synthesis of triblock co- and terpolymers of styrene, 2-vinylpyridine, and methyl methacrylate by a new methodology combining living anionic diblock copolymers with a specially designed linking reaction.’ Macromolecules 44, No. 16: 6345-6355. doi: 10.1021/ma201352z.
  • Ruhland TM, Gröschel AH, Walther A, Müller AH. . ‘Janus cylinders at liquid-liquid interfaces.’ Langmuir 27, No. 16: 9807-9814. doi: 10.1021/la201863x.