Hybrid polymer/nanocrystals structures: fabrication and studies of energy transfer, charge generation and transport
Zusammenfassung der Projektergebnisse
We developed a facile grafting-from strategy towards the synthesis of inorganic-organic composites of semiconductor nanocrystals and wide-bandgap polymers. Amino-functional fluorenes have been used as co-ligands for CdSe nanocrystals, thus enabling to design their surface directly during the synthesis. Highly monodisperse, strongly emitting CdSe nanocrystals have been obtained. Subsequently, a straightforward Yamamoto C-C coupling protocol was used to carry out surface polymerisation, hence modifying CdSe nanocrystals with oligo- and poly(fluorene) moieties. Both amino-fluorene capped CdSe nanocrystals and the resulting nanocrystal-polymer composites were characterized in detail by optical and FT-IR spectroscopy, TEM, AFM, and gel permeation chromatography, showing their potential as novel functional inorganic-organic hybrid materials.
Projektbezogene Publikationen (Auswahl)
- Cascaded FRET in Conjugated Polymer / Quantum Dot / Dye-labeled DNA Complexes for DNA Hybridization Detection. ACS NANO, Vol.3. 2009, pp. 4127-4131.
G. Jiang, A. S. Susha, A. A. Lutich, F. D. Stefani, J. Feldmann, A. L. Rogach
(Siehe online unter https://dx.doi.org/10.1021/nn901324y) - Energetic Disorder Limits Energy Transfer in Semiconductor Nanocrystal – DNA – Dye Conjugates. Appl. Phys. Lett. 2009, 95, 143101
K. Becker, A. L. Rogach, J. Feldmann, D. V. Talapin, J. M. Lupton
- Energy Transfer versus Charge Separation in Type-II Hybrid Organic-Inorganic Nanocomposites. NanoLett. 2009, 9, 2636-2640
A. A. Lutich, G. Jiang, A. S. Susha, A. L. Rogach, F. D. Stefani, J. Feldmann
- Efficient Energy Transfer in Layered Hybrid Organic/Inorganic Nanocomposites: A Dual Function of Semiconductor Nanocrystals. Applied Physics Letters, Vol. 96. 2010, 083109
A. A. Lutich, A. Poeschl, G. Jiang, F. D. Stefani, A. S. Susha, A. L. Rogach, J. Feldmann
(Siehe online unter https://dx.doi.org/10.1063/1.3319838) - Nanoscale Interaction between CdSe or CdTe Nanocrystals and Molecular Dyes Fostering or Hindering Directional Charge Separation. Small, Vol.6.2010, pp.221-225.
I. Mora-Sero, D. Gross, T. Mittereder, A. A. Lutich, A. S. Susha, T. Dittrich, A. Belaidi, R. Caballero, F. Langa, J. Bisquert, A. L. Rogach
(Siehe online unter https://dx.doi.org/10.1002/smll.200901494) - Inorganic-Organic Nanocomposites of CdSe Nanocrystals Surface-Modified with Oligo- and Poly(fluorene) Moieties. Journal of Materials Chemistry, Vol. 21. 2011, pp. 2656-2662.
I. Kanelidis, A. Vaneski, D. Lenkeit, S. Pelz, V. Elsner, R. M. Stewart, J. Rodriguez-Fernandez, A. A. Lutich, A. S. Susha, R. Theissmann, S. Adamczyk, A. L. Rogach, E. Holder
(Siehe online unter https://dx.doi.org/10.1039/C0JM03546G)
