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Hetero‐Telechelic Dye‐Labeled Polymer for Nanoparticle Decoration
Author(s) -
Roth Peter J.,
Kim KiSe,
Bae Su Hak,
Sohn ByeongHyeok,
Theato Patrick,
Zentel Rudolf
Publication year - 2009
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200900254
Subject(s) - förster resonance energy transfer , polymer , fluorescence , nanoparticle , methyl methacrylate , photochemistry , quenching (fluorescence) , materials science , polymer chemistry , copolymer , miniemulsion , chemistry , organic chemistry , nanotechnology , polymerization , physics , quantum mechanics
Abstract The synthesis of poly(methyl methacrylate) (PMMA) exhibiting one fluorescent dye (Texas Red) and one methyl disulfide end group is described. It is shown that the latter end group enabled the exchange of both oleic amine on gold nanoparticles (AuNP) and of oleic acid on CdSe/ZnS quantum dots (QD), allowing for a phase transfer of both types of nanoparticles (NP) from hexane into dimethylformamide due to the solubility provided by the PMMA chains. For AuNP, a fluorescence quenching of the dye was found due to fluorescence resonance energy transfer (FRET) from the dye to the AuNP, while QDs caused a fluorescence enhancement by FRET from the QD to the attached dyes. Due to the hetero‐telechelic geometry of the polymer, the separation between NP and dye is governed by the end‐to‐end distance of the polymer.