Naphthalene-Attached Luminescent Radicals: Investigation of Position-Dependent Photophysical Properties
Abstract Tris(2,4,6-trichlorophenyl)methyl (TTM) radicals substituted at the C1 and C2 positions of naphthalene were synthesized. The C1 substitution led to a broader photoluminescence (PL) spectrum and a significantly lower PL quantum yield (PLQY) compared to the C2 substitution. Density functional theory (DFT) calculations suggested that these differences arise from variations in steric effects and the associated molecular conformation in the excited states. Our results emphasize that the bonding position is crucial for controlling the photophysical properties of acene-substituted TTM radicals.
Authors
- Hajime Nakanotani (ORCID: https://orcid.org/0000-0002-2058-9946)
- Ken Albrecht (ORCID: https://orcid.org/0000-0003-2159-2204)
- Takuya Hosokai (ORCID: https://orcid.org/0000-0001-9164-4159)
- Yuki Akanuma
- Kenshiro Matsuda (ORCID: https://orcid.org/0009-0007-7918-4314)
- Dinar Abdullin (ORCID: https://orcid.org/0000-0003-1500-3629)
- Sabine Richert (ORCID: https://orcid.org/0000-0002-2990-974X)
- Kosuke Anraku (ORCID: https://orcid.org/0009-0009-9002-9862)
- Kanako Takeyama
Institutions
- Kyushu University (JP)
- Universität Ulm (DE)
- Hokkaido University (JP)
- National Institute of Advanced Industrial Science and Technology (JP)
Publication Details
- Journal
- Chemistry Letters
- Published
- 2026-06-24
- DOI
- https://doi.org/10.1093/chemle/upag133
- Primary Topic
- Synthesis and Properties of Aromatic Compounds
- Type
- article
- Field-Weighted Citation Impact
- 0.00