Ligand-Induced Donor State Destabilisation – A New Route to Panchromatically Absorbing Cu(I) Complexes
Tran JH, Traber P, Seidler B, Goerls H, Gräfe S, Schulz M (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 28
Article Number: e202200121
Journal Issue: 25
Abstract
The intense absorption of light to covering a large part of the visible spectrum is highly desirable for solar energy conversion schemes. To this end, we have developed novel anionic bis(4H-imidazolato)Cu(I) complexes (cuprates), which feature intense, panchromatic light absorption properties throughout the visible spectrum and into the NIR region with extinction coefficients up to 28,000 M−1 cm−1. Steady-state absorption, (spectro)electrochemical and theoretical investigations reveal low energy (Vis to NIR) metal-to-ligand charge-transfer absorption bands, which are a consequence of destabilized copper-based donor states. These high-lying copper-based states are induced by the σ-donation of the chelating anionic ligands, which also feature low energy acceptor states. The optical properties are reflected in very low, copper-based oxidation potentials and three ligand-based reduction events. These electronic features reveal a new route to panchromatically absorbing Cu(I) complexes.
Involved external institutions
Germany (DE)How to cite
APA:
Tran, J.H., Traber, P., Seidler, B., Goerls, H., Gräfe, S., & Schulz, M. (2022). Ligand-Induced Donor State Destabilisation – A New Route to Panchromatically Absorbing Cu(I) Complexes. Chemistry - A European Journal, 28(25). https://doi.org/10.1002/chem.202200121
MLA:
Tran, Jens H., et al. "Ligand-Induced Donor State Destabilisation – A New Route to Panchromatically Absorbing Cu(I) Complexes." Chemistry - A European Journal 28.25 (2022).
BibTeX: Download