Presentation Title

Synthesis & Characterization of Cysteine Derivatives for Quantum Dot Growth

Faculty Mentor

Paul Lee

Start Date

18-11-2017 10:00 AM

End Date

18-11-2017 11:00 AM

Location

BSC-Ursa Minor 101

Session

Poster 1

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

Luminescent colloidal quantum dots (QDs) have physical properties that make them attractive alternatives to organic dyes or biological fluorophores for optical detection and microscopy. We have been able to use cysteine as a ligand for synthesizing cadmium telluride (CdTe) QDs with good stability and water solubility in a one-pot method. We now wish to investigate the use of cysteine derivatives as ligands for mediating the growth in a one-pot method. Cysteine is a good ligand for CdTe because of its sulfur containing side chain, its biocompatibility, and its ability to be incorporated into peptides. The one pot method consistently gives a FWHM of 75 nm around 650 nm, which broadens at longer wavelengths. To do so, we have investigated the synthesis of cysteine thioesters using a Mitsunobu reaction and are currently using High Pressure Liquid Chromatography (HPLC) to characterize our product.

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Nov 18th, 10:00 AM Nov 18th, 11:00 AM

Synthesis & Characterization of Cysteine Derivatives for Quantum Dot Growth

BSC-Ursa Minor 101

Luminescent colloidal quantum dots (QDs) have physical properties that make them attractive alternatives to organic dyes or biological fluorophores for optical detection and microscopy. We have been able to use cysteine as a ligand for synthesizing cadmium telluride (CdTe) QDs with good stability and water solubility in a one-pot method. We now wish to investigate the use of cysteine derivatives as ligands for mediating the growth in a one-pot method. Cysteine is a good ligand for CdTe because of its sulfur containing side chain, its biocompatibility, and its ability to be incorporated into peptides. The one pot method consistently gives a FWHM of 75 nm around 650 nm, which broadens at longer wavelengths. To do so, we have investigated the synthesis of cysteine thioesters using a Mitsunobu reaction and are currently using High Pressure Liquid Chromatography (HPLC) to characterize our product.