科研之友
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摘要
The ligand induced chirality in semiconducting nanoparticles has recently gained special attention, due to possible application of chiral nanoparticles as optically active probes in enantioselective bio-sensing. However, the exact mechanisms of chiral organic ligands interaction with quantum dots surfaces are still not fully described. We have performed ligand exchange procedure in order to obtain water soluble CdSe QDs functionalized with left- and right-handed enantiomers of penicillamine molecules and the influence of such post-synthetic surface treatment on the optical properties of CdSe QDs with respect to their size has been investigated. In particular, picosecond and nanosecond time scale kinetics revealed strong hole trapping at the thiol molecules near to the quantum dots surfaces. Additionally, possible applications of chiral drug discrimination are shown for L- and D-penicillamine functionalized CdSe quantum dots.
- 出版日期2017-11
