期刊
CHEMPHYSCHEM
卷 13, 期 15, 页码 3510-3515出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201200463
关键词
dipolar disorder; host-guest systems; linewidths; single-molecule spectroscopy; spectral diffusion
资金
- Stichting voor Fundamenteel Onderzoek der Materie (FOM)
- NWO
- Ministry of Science and Higher Education (Poland) [N N202 204034]
We study single dibenzoterrylene molecules embedded in the dipolar disordered crystal 2,3-dimethylanthracene at 1.25 K. Broad linewidths (about 1 GHz, similar to 30 times broader than in the anthracene crystal), high saturation excitation intensities (similar to 1000 times larger than in anthracene), as well as strong spectral diffusions are observed. Additionally, spectral jumping is studied by varying the excitation intensity and the temperature. We propose that the spectral diffusion and dynamic disorder in this system arise from the combination of a static disorder with slight reorientations of the methyl groups of the host molecules.
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