We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Time‐Resolved Spectroscopy and Electronic Structure of Mono‐and Dinuclear Pyridyl‐Triazole/DPEPhos‐Based Cu(I) Complexes.
- Authors
Grupe, Merten; Boden, Pit; Di Martino‐Fumo, Patrick; Gui, Xin; Bruschi, Cecilia; Israil, Roumany; Schmitt, Marcel; Nieger, Martin; Gerhards, Markus; Klopper, Wim; Riehn, Christoph; Bizzarri, Claudia; Diller, Rolf
- Abstract
Chemical and spectroscopic characterization of the mononuclear photosensitizers [(DPEPhos)Cu(I)(MPyrT)]0/ (CuL, CuLH) and their dinuclear analogues (Cu2L', Cu2L'H2), backed by (TD)DFT and high‐level GW‐Bethe‐Salpeter equation calculations, exemplifies the complex influence of charge, nuclearity and structural flexibility on UV‐induced photophysical pathways. Ultrafast transient absorption and step‐scan FTIR spectroscopy reveal flattening distortion in the triplet state of CuLH as controlled by charge, which also appears to have a large impact on the symmetry of the long‐lived triplet states in Cu2L' and Cu2L'H2. Time‐resolved luminescence spectroscopy (solid state), supported by transient photodissociation spectroscopy (gas phase), confirm a lifetime of some tens of μs for the respective triplet states, as well as the energetics of thermally activated delayed luminescence, both being essential parameters for application of these materials based on earth‐abundant copper in photocatalysis and luminescent devices.
- Subjects
TIME-resolved spectroscopy; LUMINESCENCE spectroscopy; ELECTRONIC structure; DELAYED fluorescence; FOURIER transform infrared spectroscopy; PHOTOSENSITIZERS; PHOTODISSOCIATION
- Publication
Chemistry - A European Journal, 2021, Vol 27, Issue 61, p15251
- ISSN
0947-6539
- Publication type
Academic Journal
- DOI
10.1002/chem.202102760