title: Tunable Percolation in Semiconducting Binary Polymer Nanoparticle Glasses.
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.
authors: Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: Lawrence A
authors: LA
authors: Renna
authors: Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: Monojit
authors: M
authors: Bag
authors: Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: Timothy S
authors: TS
authors: Gehan
authors: Department of Chemical Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: Xu
authors: X
authors: Han
authors: Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: Paul M
authors: PM
authors: Lahti
authors: Department of Chemical Engineering, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: Dimitrios
authors: D
authors: Maroudas
authors: Department of Chemistry, University of Massachusetts Amherst , Amherst, Massachusetts 01003-9303, United States.
authors: D
authors: D
authors: Venkataraman