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Controlled Fluorescence Resonance Energy Transfer from Multiple Fluorophores in Layer‐by‐Layer Assemblies
Author(s) -
Kim KiSe,
Yoo Seong Il,
Kim Minsoo,
Sohn ByeongHyeok
Publication year - 2010
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201000309
Subject(s) - förster resonance energy transfer , fluorescence , polyelectrolyte , layer by layer , layer (electronics) , chemistry , energy transfer , photochemistry , nanotechnology , optoelectronics , materials science , optics , polymer , organic chemistry , chemical physics , physics
We demonstrate precise control of multiple FRET within LbL assemblies to produce simultaneous light emission with enhanced intensity from a single excitation with a blue wavelength. Three different fluorescent dyes were attached to neat polyelectrolytes and then incorporated into the LbL assembly. With designed deposition sequence, the layer of blue‐absorbing dyes was placed in the adjacent layer of green‐ and red‐emitting dyes, while the layers of emitting dyes were separated with each other beyond their Förster radius by inserting neat polyelectrolytes between them. The LbL assemblies not only allowed FRET from the absorbing dyes to the emitting dyes but also prohibited FRET between the emitting dyes to produce simultaneously enhanced green and red emission.