Facile intramolecular crosslinking of polymers by metallic coordination in concentrated solutions

Abstract

Single chain nanoparticles are obtained by intramolecular metallic coordination in concentrated solutions at ambient temperature.

Large-Scale Synthesis of Reactive Janus Inorganic/Polymer Colloidal Dimer

“…The electrostatic interaction along the crosslinkable block plays the key role in providing a long-range protection, thus ensuring the exclusive intramolecular crosslinking in concentrated solutions. Both the introduction of electrostatic interaction and intramolecular crosslinking are readily achieved by either covalent bonding or physical complexation. − Along with this protocol, an example Janus polymer/polymer colloidal dimer has been synthesized by subsequential crosslinking of the diblock copolymer of poly­(isoprene)- block -poly­(vinylpyridine) (PI- b -P4VP) at an unprecedented high concentration of 100 mg/mL . The PI block is modified with 2-mercaptoethylamine hydrochloride and crosslinked with 1,6-hexanediisothiocyanate, and the P4VP block is modified with iodoethane and crosslinked with 1,5-diiodopentane.…”

Directed assembly of fullerenols via electrostatic and coordination interactions to fabricate diverse and water-soluble metal cation–fullerene nanocluster complexes

“…Metal ion-nanoscale cluster coordinated aggregation complexes have received great attention to produce a variety of functional engineered nanomaterials with promising characteristics of diverse architecture, great versatility, and applicability that have enabled a broad range of applications in materials science, energy, environment, and biomedicine, [1][2][3] including pollution restorers, 4,5 environmental puriers, 6 batteries and solar cells, 7 catalysis, 8 articial enzymes, 9 templating, 10 sensing, 11 anticancer drug delivery, 12 and theranostics. 13 As a few recent highlights, for example, the selected and precise coordination of a nanoscale polyoxometalate cluster with hexavalent actinides over trivalent lanthanides gave rise to a new ultraltration-based separation method for highlevel waste in nuclear energy.…”

Single‐chain nanoparticle catalyzed polymerization toward composite nanoparticles

“…Herein, we propose a facile method of SCNP catalyzed redox free radical polymerization toward composite nanoparticles with tunable compositions and microstructures (Scheme 1). By using the method of electrostatic‐mediated intramolecular crosslinking of polymer chains by coordination with metal ions, 33 an example catalytic SCNP of c P4VP@Fe 2+ is synthesized under mild conditions. Along with step 1, after protonating P4VP with HCl to introduce electrostatic interaction, Fe 2+ is introduced at ambient temperature to achieve the intramolecular crosslinking via coordination forming the catalytic SCNP.…”