Single L茅vy States鈥揇isorder Induced Energy Funnels in Molecular Aggregates
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- 作者：Aboma Merdasa ; 脕ngel J. Jim茅nez ; Rafael Camacho ; Matthias Meyer ; Frank W眉rthner ; Ivan G. Scheblykin
- 刊名：Nano Letters
- 出版年：2014
- 出版时间：December 10, 2014
- 年：2014
- 卷：14
- 期：12
- 页码：6774-6781
- 全文大小：535K
- ISSN：1530-6992
文摘
Using fluorescence super-resolution microscopy we studied simultaneous spectral, spatial localization, and blinking behavior of individual 1D J-aggregates. Excitons migrating 100 nm are funneled to a trap appearing as an additional red-shifted blinking fluorescence band. We propose that the trap is a Frenkel exciton state formed much below the main exciton band edge due to an environmentally induced heavy-tailed L茅vy disorder. This points to disorder engineering as a new avenue in controlling light-harvesting in molecular ensembles