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Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Polymer translocation induced by a bad solvent.

Christopher Lörscher¹, Tapio Ala-Nissila, Aniket Bhattacharya

¹Department of Physics, University of Central Florida, Orlando, Florida 32816-2385, USA.

Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics

|March 17, 2011

Summary

This summary is machine-generated.

Polymer translocation through nanopores is accelerated by solvent asymmetry. A globule formed in a bad solvent near the pore enhances translocation speed, aligning with theoretical predictions.

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Area of Science:

Soft Matter Physics
Polymer Physics
Nanotechnology

Background:

Polymer translocation through nanopores is crucial for biological processes and nanotechnology.
Understanding translocation dynamics is key to controlling polymer behavior at the nanoscale.

Purpose of the Study:

Investigate polymer translocation dynamics under solvent asymmetry using 3D Langevin dynamics.
Analyze the effect of solvent interaction strength on translocation time and chain conformation.

Main Methods:

Simulated polymer chains in three dimensions using Langevin dynamics.
Created solvent asymmetry by placing cis and trans compartments in different solvents.
Varied the interaction strength (ɛ/k(B)T) for the bad solvent.

Main Results:

Translocation time (τ) scales with solvent interaction strength as (τ)~(ɛ/k(B)T)(-1) and chain length as (τ)~N(1.1±0.05) for ɛ/k(B)T≥1.
The formation of a globule in the bad solvent near the pore accelerates translocation.
Observed faster translocation compared to driven translocation due to efficient absorption of polymer segments.

Conclusions:

Solvent asymmetry significantly impacts polymer translocation dynamics through nanopores.
The formation of a collapsed globule in a poor solvent enhances translocation efficiency.
Simulation results validate theoretical predictions for driven polymer translocation.