Collective fluorescence blinking in linear J-aggregates assisted by long-distance exciton migration.
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.
Lin
Hongzhen
H
Chemical Physics, Lund University, Box 124, 22100, Lund, Sweden.
Camacho
Rafael
R
Tian
Yuxi
Y
Kaiser
Theo E
TE
Würthner
Frank
F
Scheblykin
Ivan G
IG
D004396:Coloring Agents / Q000737:chemistry; D005453:Fluorescence; D005456:Fluorescent Dyes / Q000737:chemistry; D007094:Imides / Q000737:chemistry; D008422:Materials Testing; D008856:Microscopy, Fluorescence / Q000379:methods; D015233:Models, Statistical; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D010569:Perylene / Q000031:analogs & derivatives / Q000737:chemistry; D013053:Spectrophotometry / Q000379:methods
D004396:Coloring Agents; D005456:Fluorescent Dyes; D007094:Imides; C510697:perylene bisimide; D010569:Perylene