Enhanced photoluminescence from functionalized MoS 2 quantum dots embedded in polyvinylpyrrolidone fibers
Source abstract
Abstract
Abstract MoS₂ quantum dots (QDs) functionalized with diethylenetriamine (DETA) were synthesized using a pulsed laser ablation. The DETA-functionalized MoS₂ QDs were further embedded in polyvinylpyrrolidone (PVP) fibers through an electrospinning process. Compared to the DETA-functionalized MoS₂ QDs, the DETA-functionalized MoS 2 QDs/PVP fibers exhibit an increase in the photoluminescence (PL) with an enhancement as high as 9.5-fold. On the basis of FTIR measurements, incorporation of the DETA-functionalized QDs into PVP fibers forms hydrogen bonds between amine groups of the QDs and carbonyl groups in PVP. The hydrogen bonding in the QDs/PVP fibers passivates the defects on the QD surface, enhancing the PL intensity in QDs. From the temperature-dependent PL studies, the QDs embedded in PVP fibers exhibit good thermal stability, which is advantageous for potential applications.
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Research context
OpenAlex topics: 2D Materials and Applications · Laser-Ablation Synthesis of Nanoparticles · Electrospun Nanofibers in Biomedical Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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