Inward growth by nucleation: Multiscale self-assembly of ordered membranes
| Autor: | Theyencheri Narayanan, Sylvain Prévost, Albert P. Philipse, Samia Ouhajji, Andrei V. Petukhov, Willem K. Kegel, Jasper Landman, Jan Groenewold |
|---|---|
| Přispěvatelé: | Physical Chemistry, European Synchrotron Radiation Facility (ESRF), Van 't Hoff Laboratory for Physical and Colloid Chemistry, Utrecht University [Utrecht], Institut Laue-Langevin (ILL), ILL, Sub Physical and Colloid Chemistry, Physical and Colloid Chemistry |
| Rok vydání: | 2018 |
| Předmět: |
CYCLODEXTRINS
Materials science [SDV]Life Sciences [q-bio] Nucleation 02 engineering and technology Neutron scattering 010402 general chemistry PEPTIDE NANOTUBES 01 natural sciences CARBON Condensed Matter::Materials Science Amphiphile Life Science AMPHIPHILES Anisotropy Elastic modulus Research Articles Chemical Physics Multidisciplinary Scattering SciAdv r-articles ORGANELLES Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology MICROTUBES 0104 chemical sciences DOUBLE-LAYERS Membrane NEUTRON-SCATTERING Chemical physics GERM-FORMATION X-RAY Astrophysics::Earth and Planetary Astrophysics Self-assembly 0210 nano-technology Research Article |
| Zdroj: | Science Advances, 4(6):eaat1817. American Association for the Advancement of Science (AAAS) Science Advances Science Advances, American Association for the Advancement of Science (AAAS), 2018, 4 (6), pp.1817-1-1817-9. ⟨10.1126/sciadv.aat1817⟩ Science Advances, 4(6) Science advances, 4(6). American Association for the Advancement of Science 'Science Advances ', vol: 4, pages: eaat1817-1-eaat1817-8 (2018) 'Science Advances ', vol: 4, pages: 1817-1-1817-9 (2018) Science Advances 4 (2018) 6 |
| ISSN: | 2375-2548 |
| DOI: | 10.1126/sciadv.aat1817 |
| Popis: | Time-resolved: Self-assembly mechanism and inward growth of multiwalled microtubes. Striking morphological similarities found between superstructures of a wide variety of seemingly unrelated crystalline membrane systems hint at the existence of a common formation mechanism. Resembling systems such as multiwalled carbon nanotubes, bacterial protein shells, or peptide nanotubes, the self-assembly of SDS/β-cyclodextrin complexes leads to monodisperse multilamellar microtubes. We uncover the mechanism of this hierarchical self-assembly process by time-resolved small- and ultrasmall-angle x-ray scattering. In particular, we show that symmetric crystalline bilayers bend into hollow cylinders as a consequence of membrane line tension and an anisotropic elastic modulus. Starting from single-walled microtubes, successive nucleation of new cylinders inside preexisting ones drives an inward growth. As both the driving forces that underlie the self-assembly behavior and the resulting morphologies are common to systems of ordered membranes, we believe that this formation mechanism has a similarly general applicability. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|