TY  - JOUR
A1  - Caetano, Daniel L. Z.
A1  - Carvalho, Sidney Jurado de
A1  - Metzler, Ralf
A1  - Cherstvy, Andrey G.
T1  - Critical adsorption of multiple polyelectrolytes onto a nanosphere
BT  - splitting the adsorption-desorption transition boundary
JF  - Interface : journal of the Royal Society
N2  - Employing extensive Monte Carlo computer simulations, we investigate in detail the properties of multichain adsorption of charged flexible polyelectrolytes (PEs) onto oppositely charged spherical nanoparticles (SNPs). We quantify the conditions of critical adsorption-the phase-separation curve between the adsorbed and desorbed states of the PEs-as a function of the SNP surface-charge density and the concentration of added salt. We study the degree of fluctuations of the PE-SNP electrostatic binding energy, which we use to quantify the emergence of the phase subtransitions, including a series of partially adsorbed PE configurations. We demonstrate how the phase-separation adsorption-desorption boundary shifts and splits into multiple subtransitions at low-salt conditions, thereby generalizing and extending the results for critical adsorption of a single PE onto the SNP. The current findings are relevant for finite concentrations of PEs around the attracting SNP, such as the conditions for PE adsorption onto globular proteins carrying opposite electric charges.
KW  - nanoparticles
KW  - polyelectrolytes
KW  - electrostatics
KW  - critical adsorption
KW  - phase-transition boundary
Y1  - 2020
U6  - https://doi.org/10.1098/rsif.2020.0199
SN  - 1742-5689
SN  - 1742-5662
VL  - 17
IS  - 167
PB  - Royal Society
CY  - London
ER  - 
TY  - JOUR
A1  - Yuan, Jiayin
A1  - ten Brummelhuis, Niels
A1  - Junginger, Mathias
A1  - Xie, Zailai
A1  - Lu, Yan
A1  - Taubert, Andreas
A1  - Schlaad, Helmut
T1  - Diversified applications of chemically modified 1,2-Polybutadiene
JF  - Macromolecular rapid communications
N2  - Commercially available 1,2-PB was transformed into a well-defined reactive intermediate by quantitative bromination. The brominated polymer was used as a polyfunctional macroinitiator for the cationic ring-opening polymerization of 2-ethyl-2-oxazoline to yield a water-soluble brush polymer. Nucleophilic substitution of bromide by 1-methyl imidazole resulted in the formation of polyelectrolyte copolymers consisting of mixed units of imidazolium, bromo, and double bond. These copolymers, which were soluble in water without forming aggregates, were used as stabilizers in the heterophase polymerization of styrene and were also studied for their ionic conducting properties.
KW  - emulsion polymerization
KW  - polybutadiene
KW  - polyelectrolytes
KW  - polymer modification
KW  - ring-opening polymerization
Y1  - 2011
U6  - https://doi.org/10.1002/marc.201100254
SN  - 1022-1336
VL  - 32
IS  - 15
SP  - 1157
EP  - 1162
PB  - Wiley-Blackwell
CY  - Malden
ER  -