Excited state dynamics of a Bodipy derivative with a twisted molecular structure: Combined experimental and theoretical studies
The photophysical properties of a boron dipyrromethene (Bodipy, BDP) derivative (BDP-SA) in which one F atom at the BDP core was replaced by an O atom and condensed with salicylaldehyde were investigated. This compound has a twisted molecular structure and unusually low fluorescence quantum yield (1% in toluene). No intersystem crossing was observed with a nanosecond transient absorption study. The triplet state lifetime of BDP-SA was determined to be 115 μs by photosensitizing. Femtosecond transient absorption shows a structure relaxation of ∼1.5 ps for the S1 excited state. Theoretical studies show conical intersections, which are responsible for the efficient non-radiative decay of the S1 state, which has extremely weak fluorescence.
Authors
- Gloria Mazzone (ORCID: https://orcid.org/0000-0002-4686-6876)
- Gagik G. Gurzadyan (ORCID: https://orcid.org/0000-0003-0299-5120)
- Bernhard Dick (ORCID: https://orcid.org/0000-0002-9693-5243)
- Jianzhang Zhao (ORCID: https://orcid.org/0000-0002-5405-6398)
- Sheng Liao (ORCID: https://orcid.org/0009-0004-7735-3346)
- Ming‐De Li (ORCID: https://orcid.org/0000-0002-7568-8300)
- Xi Chen (ORCID: https://orcid.org/0000-0003-2190-8758)
- Bei Li
- Xue Zhang (ORCID: https://orcid.org/0000-0003-3681-202X)
- Jiayu Li (ORCID: https://orcid.org/0009-0005-1190-2813)
Institutions
- Dalian University of Technology (CN)
- Shantou University (CN)
- Dalian University (CN)
- Institute of Art (PL)
- Smart Material (Germany) (DE)
- University of Calabria (IT)
- University of Regensburg (DE)
Publication Details
- Journal
- The Journal of Chemical Physics
- Published
- 2025-02-04
- DOI
- https://doi.org/10.1063/5.0245843
- Citations
- 5
- Primary Topic
- Luminescence and Fluorescent Materials
- Type
- article
- Field-Weighted Citation Impact
- 2.59
Funders
- Shantou University
- National Natural Science Foundation of China
- China Postdoctoral Science Foundation
- Dalian University of Technology
- Università della Calabria
- National Key Research and Development Program of China
- Fundamental Research Funds for the Central Universities