Donor/Acceptor Segregated π-Stacking Arrays by Use of Shish-Kebab-Type Polymeric Backbones: Highly Conductive Discotic Blends of Phthalocyaninatopolysiloxanes and Perylenediimides
| Autor: | Kenichi Kato, Masaki Takata, Tsuneaki Sakurai, Satoru Yoneda, Shugo Sakaguchi, Shu Seki |
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| Rok vydání: | 2017 |
| Předmět: |
Nanostructure
Materials science Polymers and Plastics Photoconductivity Organic Chemistry Stacking 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Acceptor 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Crystallography Monomer chemistry Photoinduced charge separation Shish kebab Polymer chemistry Materials Chemistry Charge carrier 0210 nano-technology |
| Zdroj: | Macromolecules. 50:9265-9275 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/acs.macromol.7b02020 |
| Popis: | Construction of large-area electron donor–acceptor (D–A) interfaces and hole/electron pathways is important for photoconducting and photovoltaic functions. Although blends of D- and A-type discotic π-systems have a possibility to realize one-dimensional charge carrier pathways as well as heterointerfaces, D–A segregated structures are difficult to develop by self-assembly because they are entropically unfavored structures. Here we report the use of shish-kebab-type hole-transporting discotic columns fixed by a self-threading polysiloxane chain and approach to such segregated nanostructures. Electron-donor/acceptor blends of soluble phthalocyaninatopolysiloxanes (Poly-SiPcs) and perylenedicarboximides (PDIs) were prepared, and their photoconductive property was investigated. Although Poly-SiPc1 shows a photoinduced charge separation with PDI1 analogous to the corresponding monomeric phthalocyanines (SiPc1 and H2Pc1), the Poly-SiPc1/PDI1 system displays a remarkably larger photoconductivity than SiPc1/PDI1 ... |
| Databáze: | OpenAIRE |
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