Morphological evolution of complex coacervate core micelles revealed by iPAINT microscopy
| Autor: | Clément Guibert, Ilja K. Voets, Antonio Aloi, Luuk L. C. Olijve |
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| Rok vydání: | 2016 |
| Předmět: |
Coacervate
Materials science Polymers and Plastics Ethylene oxide Organic Chemistry technology industry and agriculture Cationic polymerization Ionic bonding 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Micelle 0104 chemical sciences 3. Good health chemistry.chemical_compound Polyfluorene chemistry Chemical engineering Polymer chemistry Materials Chemistry Copolymer Pyridinium 0210 nano-technology |
| Zdroj: | Polymer |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2016.08.002 |
| Popis: | Structural characterization of polymeric micelles is important to understand the relation between micellar structure and properties for application in e.g. drug delivery, catalysis, and sensing. In this work we demonstrate the potential of iPAINT super-resolution microscopy for the imaging of complex coacervate core micelles (C3Ms). C3Ms are formed out of the flexible cationic diblock copolymer poly( N -methyl-2-vinyl pyridinium chloride)- b -poly(ethylene oxide) (P2MVP 29 - b -PEO 204 ) and a stiff anionic polyfluorene derivative (PF 22 ). We use iPAINT to ‘stain’ the C3Ms in a simple, non-covalent fashion to image the morphology of individual micelles. Spherical architectures are detected at low concentrations ( 0.14 mM). The observed ellipsoid-like morphology is unusual and furthermore unexpected for C3Ms of copolymers with a considerably longer corona-forming hydrophilic block than the core-forming ionic block. We attribute the observed morphological transition from spherical to ellipsoidal micelles as concentration rises to the stiffness of the conjugated polyfluorene. |
| Databáze: | OpenAIRE |
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