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Luminescent Polymeric Dispersions and Films Based on Oligonuclear Lanthanide Clusters
Author(s) -
Hauser Christoph P.,
Thielemann Dominique T.,
Adlung Matthias,
Wickleder Claudia,
Roesky Peter W.,
Weiss Clemens K.,
Landfester Katharina
Publication year - 2011
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.201000461
Subject(s) - miniemulsion , polymer , nanoparticle , materials science , luminescence , lanthanide , dynamic light scattering , chemical engineering , polymerization , monolayer , spin coating , polymer chemistry , analytical chemistry (journal) , coating , nanotechnology , chemistry , organic chemistry , ion , optoelectronics , engineering , composite material
The successful embedding of different amounts and types of hydrophobic rare earth clusters (Ln = Y, Pr, Eu, Sm, Nd) in various polymer matrices via miniemulsion polymerization is presented. The resulting cluster‐polymer hybrid nanoparticles are spherical in shape and possess a narrow size distribution, as investigated by photon cross correlation spectroscopy (PCCS) and transmission electron microscopy (TEM). The exact Ln‐content in the nanoparticles is exemplarily investigated for Eu‐ and Nd‐containing polymer dispersions via inductively coupled plasma‐optical emission spectrometry (ICP‐OES). As a result of encapsulation more than 1000 mg · L −1 of the hydrophobic Ln‐cluster are successfully dispersed in water. The photophysical properties of the emulsion show the successful avoidance of water from the vicinity of the clusters. Furthermore, a very efficient energy transfer from the ligand and polymeric unit to Eu 3+ ions can be observed in dispersion. Based on the different glass transition temperatures ( T g ) of the applied polymers, monolayers of the nanoparticles and efficient luminescent thin polymer films are obtained by spin coating.