Colloidally Prepared 3-Mercaptopropionic Acid Capped Lead Sulfide Quantum Dots
Source abstract
Abstract
Colloidally suspended PbS quantum dots stabilized with 3-mercaptopropionic acid (3-MPA) were prepared via solution ligand exchange. The optical properties of the as-prepared colloidal QDs were investigated by absorption and emission spectroscopy. The 3-MPA exchanged QDs luminesced with intensities comparable to oleate capped PbS QDs. The nanocrystal ligand chemistry was investigated by solution 1 H Nuclear Magnetic Resonance (NMR) spectroscopy, which indicated a dynamic ligand shell undergoing rapid exchange. Optical properties of the QD colloid evolved over time and were correlated to the oxidative conversion of 3-MPA into dithiodipropionic acid (DTDPA) in the presence of dimethyl sulfoxide (DMSO) observed by NMR.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Quantum Dots Synthesis And Properties · Nanocluster Synthesis and Applications · Chalcogenide Semiconductor Thin Films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Chemistry, Portland State University 1719 SW 10th Avenue, Portland, Oregon 97201, United States
Funding
Portland State University
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