Novel Molecular Building Blocks Based on the Boradiazaindacene Chromophore: Applications in Fluorescent Metallosupramolecular Coordination Polymers

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2009-01-01

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Bozdemir, Oe. Altan
Buyukcakir, Onur
AKKAYA, Engin Umut

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We designed and synthesized novel boradiazaindacene (Bodipy) derivatives that are appropriately functionalized for metal-ion-mediated supramolecular polymerization. Thus, ligands for 2-terpyridyl-, 2,6-terpyridyl-. and bipyridyl-functionalized Bodipy dyes were synthesized through Sonogashira couplings. These fluorescent building blocks are responsive to metal ions in a stoichiometry-dependent manner. Octahedral coordinating metal ions such as Zn-II result in polymerization at a stoichiometry corresponding to two terpyridyl ligands to one Zn-II ion. However, at increased metal ion concentrations, the dynamic equilibria are re-established in such a way that the monomeric metal complex dominates. The position of equilibria can easily be monitored by H-1 NMR and fluorescence spectroscopies. As expected, although open-shell Fe-II ions form similar complex structures, these cations quench the fluorescence emission of all four functionalized Bodipy ligands.

Subject Keywords

General Chemistry

URI

https://hdl.handle.net/11511/66864

Journal

CHEMISTRY-A EUROPEAN JOURNAL

DOI

https://doi.org/10.1002/chem.200802538

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Department of Chemistry, Article

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Citation Formats

O. A. Bozdemir, O. Buyukcakir, and E. U. AKKAYA, “Novel Molecular Building Blocks Based on the Boradiazaindacene Chromophore: Applications in Fluorescent Metallosupramolecular Coordination Polymers,” CHEMISTRY-A EUROPEAN JOURNAL, pp. 3830–3838, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66864.