Collective fluorescence blinking in linear J-aggregates assisted by long-distance exciton migration.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 20043661.
- Also identified by DOI 10.1021/nl9036559.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Fluorescence blinking corresponding to collective quenching of up to 100 dye monomers is reported for individual J-aggregates of a perylene bisimide (PBI) dye. This implies an exciton diffusion length up to 70 nm in these one-dimensional assemblies. The number of quenched monomers was directly measured by comparing the fluorescence brightness of the J-aggregates with that of noncoupled PBI molecules. This brightness analysis technique is useful for unraveling photophysical parameters of any individual fluorescent nanosystem.
Medical subject headings
- Fluorescence
- Nanostructures
- Nanotechnology