Synthesizing and characterising gold nanorods – Niels Bohr Institute - University of Copenhagen

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Synthesizing and characterising gold nanorods

In this bachelor project gold nanorods have been synthesized and characterized. They were synthesized in ultra-pure water with a surfactant to promote anisotropic growth. We describe possible growth mechanisms as to how gold atoms forms into cylinders, and describe their optical properties. The gold nanorods have been characterized using, ultraviolet-visible spectroscopy (UV-Vis), transmission electron microscopy (TEM) and small angle x-ray scattering (SAXS). We have developed and implemented a model for a polydisperse cylinder into existing software called WillItFit. The model has been tested by using it on simulated data, where it managed to get within 3% or closer to the simulated data. Characterization by SAXS is done by fitting the implemented model to data obtained from SAXS, and compared with results from TEM and UV-Vis spectroscopy.

Bachelor thesis defence by Jeppe Kløft Sørensen and Rasmus Hvidsten