Thermal shaping of shell-crosslinked (SCK) nanoparticles, facilitated by nanoconfinement of fluid-like cores

Well‐Defined Carbon Nanoparticles Prepared from Water‐Soluble Shell Cross‐linked Micelles that Contain Polyacrylonitrile Cores

“…This difference indicated that upon deposition on mica, the SCK nanoparticles became flatter, as described earlier for partially cross-linked SCKs. [36,37] Upon thermal stabilization and pyrolysis, the average heights of the nanoparticles decreased with an increase of processing temperature, as expected for mass loss due to volatilization of the sacrificial shell block and carbonization of PAN.…”

Design and Use of Organic Nanoparticles Prepared from Star-Shaped Polymers with Reactive End Groups

“…However, the preparation of smaller nanoparticles is more challenging. One route is the chemical fixation of self-assembled micellar structures based on block copolymers, as for example described by Wooley and others [26][27][28][29][30] . Another approach is to prepare unimolecular particles by intramolecular cross-linking.…”

Synthesis of Core‐Crosslinked Nanoparticles with Controlled Cylindrical Shape and Narrowly‐Dispersed Size via Core‐Shell Brush Block Copolymer Templates

“…The overall nanostructure flexibility, however, was problematic in maintaining the cylindrical molecular topology. Based upon our interest to accurately control the molecular dimensions and the shapes of nanoscopic objects, [16][17][18][19][20] herein we describe our recent work that relies upon corecrosslinking rigidification of core-shell brush block copolymer templates (Scheme 1). Well-defined core-shell brush copolymers were synthesized by a tandem synthetic strategy of combined ring-opening metathesis polymerization (ROMP) and nitroxide-mediated polymerization (NMP), following our recently reported method.…”

“…[12,[16][17][18][19][20] Although supramolecular assemblies of block copolymers are our most common precursors, we also have a growing interest in the synthesis of core-shell nanoparticles through brush copolymer unimolecular templates, with two major purposes. [26] First, generally with spatial covalent arrangement of polymer blocks as the primary driving force for nanostructure formation, brush copolymers can afford unique nano-scale morphologies that are unavailable by self assembly of block copolymers.…”

“…[1,2] As an interesting class of nanoobject, crosslinked polymeric core-shell nanoparticles with well-defined macromolecular architectures have been synthesized, typically by convergent synthetic polymer and organic chemistries using either core-shell dendrimers or block copolymer micelles as templates. [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] Their shape and size control, however, remains challenging. Such crosslinked nanoparticles derived from core-shell dendrimers generally have globular shapes with relatively small dimensions, of several nanometers.…”