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Fakultät für Physik


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Impressum
(c) 2002 BMO

"Ligand exchange of CdSe nanocrystals probed by optical spectroscopy in the visible and mid-IR"
B. von Holt, S. Kudera, A. Weiss, T. E. Schrader, L. Manna, W. J. Parak, M. Braun
Journal of Materials Chemistry 18 (2008) 27282732.


Abstract:
Optical spectroscopy in the UV/VIS and mid-IR spectral range was applied for a quantitative analysis of ligand exchange in CdSe semiconductor nanocrystals. CdSe cores from a single synthesis run were used for the study in order to ensure identical starting conditions for the exchange of different ligand molecules. From the analysis of the mid-IR spectrum the binding of the ligand molecules was monitored and the ligand exchange rate was obtained. DFT calculations yielded the vibrational normal modes of the system CdSe/ligand and allowed the identification of specific marker bands for the binding of different ligands to the nanocrystal surface.

BMO authors (in alphabetic order):
Markus Braun
Tobias Schrader
Birgit von Holt
Andreas Weiss

Assoziierte Projekte:
High-frequency wavepackets - ultrafast vibrational spectroscopy in the time domain
Shaping of light pulses in the femtosecond time regime
Generation of light pulses on the time scale of 5 fs


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Letzte Änderung: 2016-09-14 13:34