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Münnich R, Löser P, Winzenburg A, Faust R. Deep-cavity subporphyrazines with extended π-perimeters. J PORPHYR PHTHALOCYA 2016. [DOI: 10.1142/s1088424616501078] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Unprecedentedly large subporphyrazines (SubPz) with dibenzoquinoxalino-fusion and peripheral phenyl substitution were prepared by the cyclization of perfluorated or non-fluorous polyphenyl-substituted quinoxaline dinitriles and characterized by spectroscopic techniques. The compounds suitability to act as photosensitizers was explored by wavelength-specific induction of singlet oxygen luminescence and was shown to be excellent. Determination of 1O2-quantum yields suggests that fluorine substitution enhances the photosensitization efficiencies of the SubPz. On the other hand, cyclic voltammetry reveals an increase of irreversible reductive processes in case of the fluorinated SubPz.
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Affiliation(s)
- Roman Münnich
- Institute for Chemistry and CINSaT — Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany
| | - Patricia Löser
- Institute for Chemistry and CINSaT — Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany
| | - Andreas Winzenburg
- Institute for Chemistry and CINSaT — Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany
| | - Rüdiger Faust
- Institute for Chemistry and CINSaT — Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, Heinrich-Plett-Str. 40, D-34132 Kassel, Germany
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Claessens CG, González-Rodríguez D, Rodríguez-Morgade MS, Medina A, Torres T. Subphthalocyanines, subporphyrazines, and subporphyrins: singular nonplanar aromatic systems. Chem Rev 2013; 114:2192-277. [PMID: 24568182 DOI: 10.1021/cr400088w] [Citation(s) in RCA: 314] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Christian G Claessens
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid , E-28049 Madrid, Spain
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