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Title
Japanese:Towards scalable, low dispersity, and dimensionally tunable 2D platelets using living crystallization-driven self-assembly 
English:Towards scalable, low dispersity, and dimensionally tunable 2D platelets using living crystallization-driven self-assembly 
Author
Japanese: Charlotte E. Ellis, 福井智也, Cristina Cordoba, Arthur Blackburn, Ian Manners.  
English: Charlotte E. Ellis, Tomoya Fukui, Cristina Cordoba, Arthur Blackburn, Ian Manners.  
Language English 
Journal/Book name
Japanese:Polymer Chemistry 
English:Polymer Chemistry 
Volume, Number, Page Vol. 12    No. 25    pp. 3650-3660
Published date June 2021 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Official URL https://doi.org/10.1039/D1PY00571E
 
DOI https://doi.org/10.1039/D1PY00571E
Abstract Nanoscale two-dimensional (2D) rectangular platelets based on polymeric precursors are of interest as a result of their potentially useful properties and applications. Low dispersity 2D platelets can be prepared from crystallizable polymeric amphiphiles via the seeded growth method known as living crystallization-driven self-assembly (CDSA) but only at very low solution concentrations of ca. 0.002–0.01 wt%. This severely limits the ability to explore their properties in detail and to investigate new applications. In this proof-of-concept work we report significant improvements in the scalability of low dispersity 2D nanoparticles prepared via living CDSA of phosphonium-capped poly(ferrocenyldimethylsilane) (PFS) homopolymers, PFS23[PPh2Me]X, with surfactant counteranions (X−) at concentrations up to 0.2 wt%, 20 times higher than previously reported. At higher concentrations, platelets are still formed but at the cost of a loss in fidelity. The effects of different counteranions, temperature and concentration on platelet dimensions, structure fidelity, and aggregation behaviour were also explored. Moreover, increasing the temperature at which self-assembly was performed was found to improve the platelet fidelity and yield lower aspect ratio structures at high concentrations.

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