End‐functionalization of semiconducting species with dendronized terpyridine–Ru(II)–terpyridine complexes |
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| Authors: | Elefterios K Pefkianakis Nikolaos P Tzanetos Christos L Chochos Aikaterini K Andreopoulou Joannis K Kallitsis |
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| Institution: | 1. Department of Chemistry, University of Patras, GR‐26504 Rio‐Patras, Greece;2. Foundation of Research and Technology Hellas, Institute of Chemical Engineering and High Temperature Processes, P.O. Box 1414, GR‐26504 Rio‐Patras, Greece |
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| Abstract: | Semiconducting oligomers and polymers decorated with two or one dendronized tpy‐Ru(II)‐tpy metallocomplexes are presented. Initially, free terpyridine end‐functionalized semiconducting oligomers (distyrylanthracene, quinquephenylene, mono‐ and trifluorenes) were prepared while in a second approach, atom transfer radical polymerization was employed for the preparation of side‐chain oligomeric and polymeric (oxadiazole)s using a terpyridine initiator. These terpyridine‐bearing oligomers and polymers were complexated with a Percec‐type first‐generation (G1) dendronized terpyridine–Ru(III)Cl3 monocomplex, having two dodecyloxy groups. All oligomeric and polymeric metallocomplexes were characterized via NMR spectroscopies for their structural perfection and via UV‐Vis and PL spectroscopies for their optical properties. The existence of the organic semiconducting blocks in combination with the terpyridine–Ru(II)–terpyridine groups afforded hybrid metallo‐semiconducting species presenting the optical features of both their components. Moreover, their thin‐film morphologies were investigated through atomic force microscopy, revealing, in some cases, an organization tendency in the nanometer scale. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 1939–1952, 2009 |
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| Keywords: | dendrimers heteroatom‐containing polymers metal‐polymer complexes semiconducting oligomers supramolecular structures |
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