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Published on: October 5, 2019
Sb(V) dihalide corroles: efficient singlet oxygen photosensitisers
Volkan Caliskanyürek1, Simon Eulberg2, Oliver Lange1
1Department of Energy Conversion, Institute of Physical and Theoretical Chemistry, Technische Universität Braunschweig, Rebenring 31, 38106, Braunschweig, Germany. s.tschierlei@tu-braunschweig.de.
This study highlights antimony(V) dihalide corrole complexes, particularly complex 1, for their unique emission and efficient intersystem crossing. These properties make them promising for photooxidation reactions.
Area of Science:
- Inorganic Chemistry
- Photochemistry
- Materials Science
Background:
- Corrole complexes of antimony(V) are explored for their photophysical properties.
- Understanding excited state dynamics is crucial for developing photosensitizers.
Purpose of the Study:
- To investigate the photophysical properties of difluoro-5,15-di(4-cyanophenyl)-10-(2,4,5-trimethoxyphenyl)corrolatoantimony(V) (complex 1).
- To evaluate its potential for photooxidation reactions.
Main Methods:
- Synthesis and characterization of the antimony(V) corrole complex.
- Photophysical measurements including emission properties and intersystem crossing rates.
- Determination of singlet oxygen quantum yield.
Main Results:
- Complex 1 exhibits distinct emission properties and efficient intersystem crossing.
- An extended triplet excited state lifetime was observed for complex 1.
- Singlet oxygen quantum yield exceeded 95%.
Conclusions:
- Antimony(V) dihalide corrole complexes, exemplified by complex 1, possess significant potential as photosensitizers.
- The high singlet oxygen quantum yield positions complex 1 as a leading candidate for effective photooxidation applications.
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