Color Bricks: Building Highly Organized and Strongly Absorbing Multicomponent Arrays of Terpyridyl Perylenes on Metal Oxide Surfaces |
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Authors: | Essi Sariola‐Leikas Dr Zafar Ahmed Dr Paola Vivo Anniina Ojanperä Dr Kimmo Lahtonen Jesse Saari Prof Mika Valden Prof Helge Lemmetyinen Dr Alexander Efimov |
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Institution: | 1. Department of Chemistry and Bioengineering, Tampere University of Technology, Tampere, Finland;2. Surface Science Laboratory, Optoelectronics Research Centre, Tampere University of Technology, Tampere, Finland |
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Abstract: | Terpyridine‐substituted perylenes containing cyclic anhydrides in the peri position were synthesized. The anhydride group served as an anchor for assembly of the terpyridyl‐crowned chromophores as monomolecular layers on metal oxide surfaces. Further coordination with Zn2+ ions allowed for layer‐by‐layer formation of supramolecular assemblies of perylene imides on the solid substrates. With properly selected anchor and linker molecules it was possible to build high quality structures of greater than ten successive layers by a simple and straightforward procedure. The prepared films were stable and had a broad spectral coverage and high absorbance. To demonstrate their potential use, the synthesized dyes were employed in solid‐state dye‐sensitized solar cells, and electron injection from the perylene antennas to titanium dioxide was observed. |
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Keywords: | perylene self-assembly solar cells supramolecular chemistry terpyridine |
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