AI Article Synopsis
- Binary polymer nanoparticle glasses allow for the controlled assembly of different components, enabling the creation of functional materials at both nanoscale and mesoscale levels.
- The research shows that by adjusting the proportions of semiconducting and insulating nanoparticles, the electrical conductivity can be finely tuned, with percolation thresholds ranging from 24% to 30%.
- A resistor network model developed in the study helps to replicate the experimental results and foresee percolation trends, while also analyzing the cluster statistics of these nanoparticle glasses to aid in material design.
Article Abstract
Binary polymer nanoparticle glasses provide opportunities to realize the facile assembly of disparate components, with control over nanoscale and mesoscale domains, for the development of functional materials. This work demonstrates that tunable electrical percolation can be achieved through semiconducting/insulating polymer nanoparticle glasses by varying the relative percentages of equal-sized nanoparticle constituents of the binary assembly. Using time-of-flight charge carrier mobility measurements and conducting atomic force microscopy, we show that these systems exhibit power law scaling percolation behavior with percolation thresholds of ∼24-30%. We develop a simple resistor network model, which can reproduce the experimental data, and can be used to predict percolation trends in binary polymer nanoparticle glasses. Finally, we analyze the cluster statistics of simulated binary nanoparticle glasses, and characterize them according to their predominant local motifs as (p(i), p(1-i))-connected networks that can be used as a supramolecular toolbox for rational material design based on polymer nanoparticles.
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| http://dx.doi.org/10.1021/acs.jpcb.5b11716 | DOI Listing |
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