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Tungulin D, Leier J, Carter AB, Powell AK, Albuquerque RQ, Unterreiner AN, Bizzarri C. Chasing BODIPY: Enhancement of Luminescence in Homoleptic Bis(dipyrrinato) Zn II Complexes Utilizing Symmetric and Unsymmetrical Dipyrrins. Chemistry 2019; 25:3816-3827. [PMID: 30687972 DOI: 10.1002/chem.201806330] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 11/09/2022]
Abstract
Dipyrromethene metal complexes are fascinating molecules that have applications as light-harvesting systems, luminophores, and laser dyes. Recently, it has been shown that structurally rigid bis(dipyrrinato) zinc(II) complexes exhibit high fluorescence with comparable quantum yields to those of boron dipyrromethenes or BODIPYs. Herein, eight new bis(dipyrrinato) ZnII complexes, obtained from symmetric and unsymmetrical functionalization of the dipyrromethene structure through a Knoevenagel reaction, are reported. It was possible not only to vary the maximum visible absorption from 490 to 630 nm, but also to enhance the emission quantum yield up to 66 %, which is extraordinarily high for homoleptic bis(dipyrrinato) zinc complexes. These results pave the way for designing highly luminescent bis(dipyrrinato) zinc complexes.
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Affiliation(s)
- Dmitry Tungulin
- Institute of Organic Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131, Karlsruhe, Germany
| | - Julia Leier
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131, Karlsruhe, Germany
| | - Anthony B Carter
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse15, 76131, Karlsruhe, Germany.,School of Chemistry, University of Southampton, University Road, Southampton, SO17 1BJ, UK
| | - Annie K Powell
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology, Engesserstrasse15, 76131, Karlsruhe, Germany.,Institute of Nanotechnology, Karlsruhe Institute of Technology, Hermann von Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Rodrigo Q Albuquerque
- Organic Chemistry Institute, University of Münster, Correnstrasse 40, 48151, Münster, Germany
| | - Andreas N Unterreiner
- Institute of Physical Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 2, 76131, Karlsruhe, Germany
| | - Claudia Bizzarri
- Institute of Organic Chemistry, Karlsruhe Institute of Technology, Fritz-Haber-Weg 6, 76131, Karlsruhe, Germany
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