Star-shaped π-conjugated oligomers and their applications in organic electronics and photonics

Kanibolotskyy, A. L., Perepichka, I. F. and Skabara, P. J. (2010) Star-shaped π-conjugated oligomers and their applications in organic electronics and photonics. Chemical Society Reviews, 39(7), pp. 2695-2728. (doi: 10.1039/b918154g)

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Strategies for the design and construction of non-linear, 2D and 3D conjugated macromolecules are presented in this critical review. The materials, termed here as star-shaped structures, feature a core unit which may or may not provide conjugated links between arms that radiate like spokes from a central axle. The arms of the macromolecules consist of linear oligomers or irregular conjugated chains lacking a formal repeat unit. The cores range from simple atoms to single or fused aromatic units and can provide a high level of symmetry to the overall structure. The physical properties of the star-shaped materials can be markedly different to their simple, linear conjugated analogues. These differences are highlighted and we report on anomalies in absorption/emission characteristics, electronic energy levels, thermal properties and morphology of thin films. We provide numerous examples for the application of star-shaped conjugated macromolecules in organic semiconductor devices; a comparison of their device performance with those comprising analogous linear systems provides clear evidence that the star-shaped compounds are an important class of material in organic electronics. Moreover, these structures are monodisperse, well-defined, discrete molecules with 100% synthetic reproducibility, and possess high purity and excellent solubility in common organic solvents. They feature many of the attributes of plastic materials (good film-forming properties, thermal stability, flexibility) and are therefore extremely attractive alternatives to conjugated polymers (210 references).

Item Type:Articles
Glasgow Author(s) Enlighten ID:Kanibolotskyy, Dr Oleksandr and Skabara, Professor Peter
Authors: Kanibolotskyy, A. L., Perepichka, I. F., and Skabara, P. J.
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Chemical Society Reviews
Publisher:Royal Society of Chemistry
ISSN (Online):1460-474

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