Premium
Block Copolymer Based Molecular Motor
Author(s) -
Perelstein Oleg E.,
Ivanov Viktor A.,
Velichko Yury S.,
Khalatur Pavel G.,
Khokhlov Alexei R.,
Potemkin Igor I.
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200700009
Subject(s) - copolymer , reptation , anisotropy , materials science , surface (topology) , molecular motor , molecular dynamics , chemical physics , molecule , langevin equation , motion (physics) , block (permutation group theory) , classical mechanics , physics , polymer , nanotechnology , chemistry , geometry , composite material , optics , computational chemistry , mathematics , quantum mechanics
We propose a model of molecular motor based on diblock copolymer strongly adsorbed on a patterned surface. One of the blocks of the copolymer is modeled as field responsive. It is shown that time‐periodic collapse‐readsorption of the responsive block leads to the directed motion (reptation) of the molecule along the “track” provided by the surface pattern. Both the Langevin dynamics (LD) technique of computer simulation for the bead‐spring model and numerical solution of the Newton equations of a simplified (toy) model of the copolymer are used. The physical reason of directionality of the motion is shown to be an anisotropy of the friction of the molecule with the surface.