Engineering Biocompatible Glutathione-Capped Cu2ZnSnS4 Quantum Dots Toward Integrated Photothermal and Photodynamic Effects
Ning Lu, Yufeng Zang, Lingshuai Kong
TL;DR
Researchers developed tiny quantum dots that can both heat up and produce reactive oxygen under infrared light, offering a new way to treat cancer.
Contribution
The study introduces glutathione-capped Cu2ZnSnS4 quantum dots with dual photothermal and photodynamic capabilities for cancer therapy.
Findings
CZTS@GSH QDs showed effective photothermal conversion under 808 nm laser irradiation.
The QDs generated singlet oxygen, confirming their photodynamic therapy capability.
The QDs have a band gap of 1.47 eV and an average hydrodynamic diameter of ~6.2 nm.
Abstract
Ultrasmall near-infrared (NIR)-responsive quantum dots (QDs) are highly promising for deep-tissue phototherapy but often face challenges with biocompatibility and clearance. In this study, Cu2ZnSnS4 quantum dots (CZTS QDs) were synthesized via a non-injection method and surface-functionalized with glutathione (GSH) to create water-dispersible and biocompatible CZTS@GSH QDs. Comprehensive characterization using XRD, TEM, DLS, XPS, and UV-Vis spectroscopy confirmed a sphalerite-type ZnS crystal structure, an average hydrodynamic diameter of ~6.2 nm, and a band gap of 1.47 eV (843.5 nm). The CZTS@GSH QDs demonstrated effective photothermal conversion under 808 nm laser irradiation, achieving a temperature increase sufficient for photothermal therapy (PTT). Furthermore, using a DPBF assay, the QDs were shown to generate singlet oxygen, confirming their photodynamic therapy (PDT) capability.…
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
Click any figure to enlarge with its caption.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 8Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsNanoplatforms for cancer theranostics · Quantum Dots Synthesis And Properties · Gold and Silver Nanoparticles Synthesis and Applications