Adam Roberge

Date of Award

Spring 2020

Document Type

Open Access Dissertation


Chemistry and Biochemistry

First Advisor

Andrew B. Greytak


Semiconductor quantum dots have received extensive research interest due to the size tunable band gap, large extinction coefficient, and ease of synthesis. These nanocrystals possess large surface to volume ratios and the chemistry at the surface of the nanocrystal greatly influences the resultant optoelectronic properties. Therefore, after synthesis, purification of the quantum dot samples to remove synthetic by-products that may alter these properties is of great importance. Gel permeation chromatography (GPC), a form of size exclusion chromatography, has been shown to reproducibly purify CdSe quantum dots. This work focuses on the expansion of purification by gel permeation chromatography to other quantum dot systems. Furthermore, utilizing the subtle purification available through gel permeation chromatography the surface chemistry of III-V and IV-VI quantum dots is investigated.

Included in

Chemistry Commons