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Characterisation
The samples, with and without the ligands attached, were sent for TEM analysis.
As follows are the images:
QUANTUM DOTS WITHOUT LIGAND
Spherical with
Diameters ranging from 2-10 nm
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Physical properties of our samples correspond with literature
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Small size of quantum dots results in high surface area to volume ratio which supports high fluorescence efficiency
QUANTUM DOTS WITH LIGAND
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It was observed that the Quantum Dots tended to agglutinate when ligands were attached to them
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This was possibly due to the fact that the ligands form hydrogen bonds and dipole interactions with one another
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