Conjugated Polymer Composite Nanoparticles by Rapid Mixing

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JUNG, Christoph, Tjaard DE ROO, Stefan MECKING, 2014. Conjugated Polymer Composite Nanoparticles by Rapid Mixing. In: Macromolecular Rapid Communications. 35(23), pp. 2038-2042. ISSN 0173-2803. eISSN 1521-3927

@article{Jung2014Conju-29372, title={Conjugated Polymer Composite Nanoparticles by Rapid Mixing}, year={2014}, doi={10.1002/marc.201400384}, number={23}, volume={35}, issn={0173-2803}, journal={Macromolecular Rapid Communications}, pages={2038--2042}, author={Jung, Christoph and de Roo, Tjaard and Mecking, Stefan} }

2014 de Roo, Tjaard de Roo, Tjaard Composite nanoparticles from poly[(9,9-di-n-octylfluoren-2,7-diyl)-alt-(benzo[2,1,3]thiadiazol-4,8-diyl)] (F8BT) and poly(9,9-di-n-hexylfluoren-2,7-diyl) (PF) with embedded inorganic nanoparticles (TiO<sub>2</sub>, CdSe, and CdSe/CdS) are prepared through kinetic trapping by rapid turbulent mixing in a multi-inlet vortex mixer without the need for polymer functionalization. High contents of inorganic materials up to 50–60 wt% are realized for all composites. The influence of flow ratios, sodium dodecyl sulfate (SDS) concentration, and absolute flow rates on the particle size and morphology is studied. High water-to-THF ratios and high total flow rates around 2 m s<sup>−1</sup> yield particle sizes below 50 nm. By adjusting these parameters, controlled particle sizes between 30 to several hundred nanometers are obtained. Composite particles from CdSe/CdS and F8BT or PF show a strong quenching of the polymer emission and near exclusive emission from the inorganic nanocrystal, which indicates an efficient energy transfer with fluorescence quantum yields of 23% for the F8BT/CdSe/CdS composites and 21% for the PF/CdSe/CdS composites. The dispersions are colloidally stable for several months. Mecking, Stefan Jung, Christoph Conjugated Polymer Composite Nanoparticles by Rapid Mixing 2014-12-02T09:56:15Z Jung, Christoph eng Mecking, Stefan 2014-12-02T09:56:15Z

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