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DOI: 10.1055/s-0041-1737792
Tuning the Electrochemical and Photophysical Properties of Osmium-Based Photoredox Catalysts
E.B. acknowledges the Experientia Foundation for a postdoctoral fellowship. We are grateful to Bristol-Myers Squibb for support.
Abstract
The use of low-energy deep-red (DR) and near-infrared (NIR) light to excite chromophores enables catalysis to ensue across barriers such as materials and tissues. Herein, we report the detailed photophysical characterization of a library of OsII polypyridyl photosensitizers that absorb low-energy light. By tuning ligand scaffold and electron density, we access a range of synthetically useful excited state energies and redox potentials.
1 Introduction
1.1 Scope
1.2 Measuring Ground-State Redox Potentials
1.3 Measuring Photophysical Properties
1.4 Synthesis of Osmium Complexes
2 Properties of Osmium Complexes
2.1 Redox Potentials of Os(L)2-Type Complexes
2.2 Redox Potentials of Os(L)3-Type Complexes
2.3 UV/Vis Absorption and Emission Spectroscopy
3 Conclusions
Supporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/s-0041-1737792.
- Supporting Information
Publication History
Received: 16 November 2021
Accepted after revision: 29 December 2021
Article published online:
14 January 2022
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