Temperature dependence of the convex solubility parameters of organic semiconductors

Autor: David S. Boucher, Jason S. Howell
Rok vydání: 2015
Předmět:
Zdroj: Journal of Polymer Science Part B: Polymer Physics. 54:81-88
ISSN: 0887-6266
DOI: 10.1002/polb.23948
Popis: Solubility parameter methods have also proven very useful in an array of theoretical and practical applications, particularly regarding the mutual solubility of polymers and organic semiconductors in bulk-heterojunction composites. The temperature dependence of the solubility and miscibility of organic semiconductors offers a promising route for directing the organization of materials and composites toward optimal morphologies. Here, the convex solubility parameter (CSP) approach is used to investigate the temperature dependence of three organic semiconductors: PCBM, P3HT, and PCPDTBT. The CSPs and mutual solubility regions are computed at several temperatures between 25 °C and 140 °C, and the results are compared to those obtained from a traditional spherical-fitting algorithm. In addition, the impact that constant and varying thermal expansion coefficients have on the computed solubility parameters across this temperature range is investigated. © 2015 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2016, 54, 81–88
Databáze: OpenAIRE