Controlled dispersion of a porphyrin/fullerene donor-acceptor complex in semiconducting polymer thin films: Intermolecular interactions of polymers with porphyrin and fullerene

摘要

Thin films composed of semiconducting polymers [poly(2-vinyl naphthalene), poly(4-diphenyl aminostyrene), poly(1-vinyl pyrene), and poly(3-hexyl thiophene-2,5-diyl)], zinc(II)-5,10,15,20-tetra-(2-naphthyl)porphyrin, and [6,6]-phenyl-C-61-butyric acid methyl ester blends were prepared to investigate the controlled dispersion of porphyrin molecules in semiconducting polymer thin films. Tailoring the intermolecular interactions between the polymer/fullerene, polymer/porphyrin, and porphyrin/fullerene systems was found to be an effective method of controlling the dispersion. When the polymer/porphyrin interactions were enhanced, intermixed porphyrin/fullerene donor-acceptor complex domains were formed, whereas under conditions where the polymer/porphyrin interactions were weakened, the complex assembled at the borders between the polymer and fullerene phases. This concept could potentially be applied to various combinations of porphyrin/fullerene systems in semiconducting polymer thin films to develop polymer solar cells with excellent performance. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41629.