Polymer modification of colloidal particles by spontaneous polymerization of surface active monomers

Preparation and self-assembly of carboxylic acid-functionalized silica

“…However a very limited member of articles describes the modification of carboxyl group to silica nanoparticle surface. Carboxyl groups on silica surface were obtained by trichlorocyanoethylsilane (TCES) [19], polymer [25] and succinic anhydride [26,27] through different methods, especially succinic anhydride converts amino groups into carboxyl groups easily without higher temperature or additional catalyst [28,29].…”

Self‐Assembled, Chemically Fixed Homojunctions in Semiconducting Polymers

“…[14,15] For this study, four different polymerizable ion pairs were synthesized from inexpensive precursors (Fig. 2) 2-acrylamido-2-methyl-1-propane sulfonate (APTA/AMPS), and a mixed methylmethacrylate-styrene pair, (4-vinylbenzyl)dimethylhexan-1-ammonium 2-(methacryloyloxy)ethane sulfonate [16] (VBDHA/MES). The current-voltage and luminance-voltage curves for an MDMO-PPV-, PFO-and DOF-MEH-based ion-pair monomer fixed-junction LEC are shown in Figure 3.…”

Modification of Monodisperse Colloidal Silica by Radical Copolymerizatoin of Cationic Surface Active Vinyl Monomers

“…It suggests that copolymerization of surface active vinyl monomers on colloidal silica occurred by the 'water pool mechanism' associated with spontaneous polymerization of polymerizable surfactant. 22 As estimated from the DLS experiment, the thickness of polymer on composite was about 6.88 nm. Hence, the increase of particle size by copolymerization seemed to be quite small, reflecting almost the retention of the particle size.…”

“…20,21 Furthermore, the adsorption and spontaneous polymerization of head-or tail-type surface active monomers on colloidal particles were investigated. 22 In this work, we carried out polymer modification of silica nanoparticles by polymerization of amide ammonium-type, cationic vinyl monomers I, II and carboxylic acid monomer III adsorbed on colloidal silica with an AAP initiator, as shown in Scheme 1. However, attached linear, homopolymers on the surface of silica were separated by washing organic solvents because binding polymer to silica surface is involved by weak electrostatic attraction.…”