Excited-State Dynamics of Platinum(II) Complexes with Flexible Lewis Pair Ligands
Abstract Excited-state dynamics of platinum(II) complexes coordinated with stimuli-responsive flexible Lewis pair (FlexLP) and 4,4′-di-tert-butyl-2,2′-bipyridine (tBu2bpy), 1,2-bis(diphenylphosphino)ethane (dppe), or triphenylphosphine (PPh3) ligands were investigated by ultrafast transient absorption spectroscopy. Spectroscopic studies reveal that the platinum(II) bipyridine complex exhibits faster intersystem crossing (ISC) and triplet excited-state decay than the complexes with phosphine ligands, attributed to the higher contribution of charge-transfer (CT) and metal character in the excited states. The triplet excited-state lifetimes of the complexes are also influenced by the conformation of the FlexLP ligands, with the closed-form complexes showing longer lifetimes than the open-form complexes.
Authors
- Ka‐Ming Tong (ORCID: https://orcid.org/0000-0001-6675-652X)
- Michael O. Wolf (ORCID: https://orcid.org/0000-0003-3076-790X)
- Jéssica Toigo (ORCID: https://orcid.org/0000-0001-9420-460X)
- Saeid Kamal (ORCID: https://orcid.org/0000-0003-2758-4459)
- Brian O. Patrick (ORCID: https://orcid.org/0000-0002-2921-8439)
Institutions
- University of British Columbia (CA)
Publication Details
- Journal
- Inorganic Chemistry
- Published
- 2026-11-06
- DOI
- https://doi.org/10.1021/acs.inorgchem.6c04331
- Primary Topic
- Photochemistry and Electron Transfer Studies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Natural Sciences and Engineering Research Council of Canada