Phosphonate-Responsive Platform Based on Bisguanidinium Silanes
Clark, Heather L.
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Quantum dots have become attractive luminescent probes. In comparison to traditional organic probes, quantum dots exhibit longer excited-state luminescent lifetimes, they can be "tuned" for a particular wavelength, and they can be made water soluble. The major problem with silicon quantum dots is the preparation of samples that exhibit reproducible size, emission spectra, photoluminescent intensity, and lifetimes that are also stable over time. Given this, we have focused on creating silicon quantum dots with high reproducibility and stability. Once silicon quantum dot preparation has become standardized, we aim to create new sensor platforms based on these silicon quantum dots. This thesis will begin with a review of silicon quantum dots, discuss their photophysics, and then summarize our recent efforts.