Research output: Contribution to journal › Article › peer-review
Poly(diallyldimethylammonium chloride) in water and aqueous salt solution: Explicit solvent molecular dynamics and experiment. / Готлиб, Игорь Юльевич; Корчак, Петр Андреевич; Сафонова, Евгения Алексеевна; Волкова, Анна Валериевна; Викторов, Алексей Исмаилович.
In: Journal of Molecular Liquids, Vol. 422, 126946, 01.03.2025.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Poly(diallyldimethylammonium chloride) in water and aqueous salt solution: Explicit solvent molecular dynamics and experiment
AU - Готлиб, Игорь Юльевич
AU - Корчак, Петр Андреевич
AU - Сафонова, Евгения Алексеевна
AU - Волкова, Анна Валериевна
AU - Викторов, Алексей Исмаилович
PY - 2025/3/1
Y1 - 2025/3/1
N2 - Poly(diallyldimethylammonium chloride) (PDADMAC) in water and aqueous NaCl solutions was simulated by full-atomic molecular dynamics (MD). Structural characteristics (chain conformations, counterion distribution), diffusion coefficients and electrophoretic mobility were estimated from the simulations and compared with available experimental data. The preferred polycation conformation looks like a sequence of stretched fragments separated by kinks. Adding the salt to the aqueous solution makes the chains more flexible but only slightly more compact, despite significant counterion condensation. Although MD with OPLS-AA force field and SPC/E model for water somewhat overestimates the polycation mobility, the simulation reproduces rather well the experimentally observed composition dependence of the transport characteristics mediated by the polyion – counterions interaction.
AB - Poly(diallyldimethylammonium chloride) (PDADMAC) in water and aqueous NaCl solutions was simulated by full-atomic molecular dynamics (MD). Structural characteristics (chain conformations, counterion distribution), diffusion coefficients and electrophoretic mobility were estimated from the simulations and compared with available experimental data. The preferred polycation conformation looks like a sequence of stretched fragments separated by kinks. Adding the salt to the aqueous solution makes the chains more flexible but only slightly more compact, despite significant counterion condensation. Although MD with OPLS-AA force field and SPC/E model for water somewhat overestimates the polycation mobility, the simulation reproduces rather well the experimentally observed composition dependence of the transport characteristics mediated by the polyion – counterions interaction.
KW - Macromolecular conformations
KW - Molecular dynamics
KW - Poly(diallyldimethylammonium chloride)
KW - Polyelectrolytes
KW - Transport properties
UR - https://www.mendeley.com/catalogue/986fa92c-6e35-3aa4-a3fb-f301fdbfcc0c/
U2 - 10.1016/j.molliq.2025.126946
DO - 10.1016/j.molliq.2025.126946
M3 - Article
VL - 422
JO - Journal of Molecular Liquids
JF - Journal of Molecular Liquids
SN - 0167-7322
M1 - 126946
ER -
ID: 131494334