Chemical shield effect of metal complexation on seeded growth of poly(ε-caprolactone) core-forming blends

Precise Control of Two-Dimensional Hexagonal Platelets via Scalable, One-Pot Assembly Pathways Using Block Copolymers with Crystalline Side Chains

“…Nanoscale two-dimensional (2D) particles have received extensive interest due to their unique properties, which originate from their ultrathin planar structures. − Solution self-assembly of amphiphilic block copolymers (BCPs) is commonly a convenient route to create 2D core–shell platelet micelles with properties that are analogous to other planar nanoassemblies. − However, the fabrication of 2D platelet micelles from amorphous BCPs is generally a difficult procedure due to strict conditions required for the formation of 2D structures, such as BCP composition, solid concentration, and kinetics pathway . The recent development of crystallization-driven self-assembly (CDSA) approach provides a facile method to create anisotropic nanoparticles including one-dimensional (1D) and 2D BCP nanomaterials with tunable size, tailored composition and low particle size dispersity. − Seeded growth, also termed as “living” CDSA, has been confirmed as a powerful approach for the formation of 2D platelet micelles with precision control over their dimensions. − This has been demonstrated for polyferrocenylsilane (PFS) − and now has been extended to poly­(ε-caprolactone) (PCL) − and poly­( l -lactide) (PLLA), − where epitaxial crystallization of polymer amphiphiles to the crystalline seeds is regarded as the primary growth mechanism for the “living” CDSA (Scheme A).…”

Regulation of Two-Dimensional Platelet Micelles by Dynamic Changing of Polymer Topological Architectures upon Light Irradiation

“…The quest for facile approaches to fabricate two-dimensional (2D) soft nanomaterials with precise control of their shapes, dimensions, surface chemistries, and diverse functionalities has garnered significant interest across various fields such as catalysis, energy storage, and biomedical engineering. − A promising avenue to achieve the desired control and uniformity of 2D platelet micelles lies in the “crystallization-driven self-assembly (CDSA)” process, where epitaxial growth, driven by crystallization forces, governs the formation of anisotropic 2D core–shell nanoparticles. − In this context, amphiphilic block copolymers (BCPs) containing crystallizable core-forming blocks are widely employed as prerequisites, leading to the formation of highly stable 2D micelles in selective solvents. ,− Among various CDSA methods, seeded growth stands out as a living CDSA approach, characterized by the dynamic behavior of the active ends of seed micelles that facilitate further epitaxial growth upon the addition of unimer units. Consequently, the utilization of seeded growth holds immense promise for producing uniform micelles with precise dimensions and tailored properties. ,,− …”

Regulation of Two-Dimensional Platelet Micelles with Tunable Core Composition Distribution via Coassembly Seeded Growth Approach

“…One-dimensional (1D) or two-dimensional (2D) nanoparticles with precision control over size can be obtained via a process of crystallization-driven self-assembly (CDSA) of block copolymers. − Seeded growth termed “living” CDSA has been identified as a powerful method to create size-tunable nanoparticles that could be regulated by mass ratios of unimer-to-seed. − The precise control of 1D or 2D micelles using the seeded growth approach with an identical crystallizable core is extensively studied, and a range of well-defined core–shell nanoparticles are created. − Epitaxial crystallization is usually regarded as the crystal growth mechanism for the formation of uniform micelles. These uniform core–shell micelles represent an attractive category of nanomaterials due to their widespread applications in terms of sensors, , catalyst, − reinforcement, , and emulsion. , …”