Molecular weight dependent charge carrier mobility in poly(3,3"-dioctyl-2,2':5',2"-terthiophene)

Article Abstract:

Poly(3,3"-dioctyl-2,2':5',2"-terthiophene) is fabricated into five fractions distinctly differing in their molecular weights in order to determine the influence of the degree of polymerization (D[P.sub.n]) on its principal physicochemical parameters. The results have shown that at least in the polythiophene family of electroactive parameters, the DP dependence of the crucial electrical parameters persists to relatively high molecular weights and have indicated the importance of the macromolecular parameters control in the fabrication of polymer-based electronic and electrochemical devices.

Analytical Laboratory Instrument Manufacturing, Analytical instruments, Electrochemical Instruments, Charge transfer, Electrochemical apparatus

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Monolayers of diphenyldiacetlylene derivatives: Tuning molecular tilt angles and photopolymerization efficiency via electrodeposited Ag interlayer on Au

Article Abstract:

An electrodeposited Ag adlayer (upd, underpotential deposition) is utilized to improve monolayer photopolymerization of diphenyldiacetylene derivatives (DPDA) that would otherwise exhibit no polymerization in solid state. The optimal efficiency of polymerization takes place on upd-modified substrates that can generate ~45 degree tilt angle for DPDA derivatives.

Silver compounds, Acetylene, Chemical properties, Atomic properties, Phenyl compounds

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Fully solvable equilibrium self-assembly process: fine-tuning the clusters size and the connectivity in patchy particle systems

Article Abstract:

A parameter-free full description of the self-assembly process is provided for systems with a small average functionality. The Wertheim theory for associating liquids is combined with the Flory-Stockmayer approach for chemical gelation in order to derive the fully predictive parameter-free theory of equilibrium self-assembly.

Usage, Molecular dynamics, Monte Carlo method, Monte Carlo methods, Gelation

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