Publication details

Light-triggered reactions in a new "light" of nanoparticles engineering

Authors

FIALOVA Tatiana VACULOVICOVA Marketa STEFANIK Michal MRAVEC Filip BURESOVA Michaela VODOVA Milada RYPAR Tomas RŮŽEK Daniel HYNEK David CIHALOVA Kristyna BACOVSKY Jaromir FERUS Martin NEJDL Lukas

Year of publication 2024
Type Article in Periodical
Magazine / Source Journal of Photochemistry and Photobiology A: Chemistry
MU Faculty or unit

Faculty of Science

Citation
web https://www.sciencedirect.com/science/article/pii/S1010603024002119
Doi http://dx.doi.org/10.1016/j.jphotochem.2024.115667
Keywords Antimicrobial substance; Interferometry; Nanoparticles; MRSA; Nanozymes; Nanoreactors; Ultraviolet radiation
Description This study presents an innovative light-triggered synthesis of nanoparticles (NPs) utilizing UV radiation (lambda = 254 nm), thiols (non-toxic mercaptosuccinic acid, MSA), and metal ions (Cu 2 + , Zn 2 + , Cd 2 + , Se 4 + ). Efficient formation of various nanoparticles is achieved by exposing a precursor blend of metal ions and thiols (MSA) to ultraviolet light in compact volumes, like UV -transparent 96-well plates (50 - 300 mu L per well) or plastic tubes (1.5 - 50 mL). This process effectively produces different types of nanoparticles, including fluorescent zinc-cadmium quantum dots (ZnCd QDs), non-fluorescent copper nanoparticles (CuNPs), and selenium nanoparticles (SeNPs). The scalability of the method allows for easy upscaling using larger test tubes or downsizing by depositing precursors (10 - 100 mu L) on a paper matrix, where UV treatment not only induces NP formation in solution but also facilitates their anchoring to the paper surface. The developed one-pot in situ approach offers a cost-effective, user-friendly, and energy-efficient method for NP production and chemical engineering on paper surfaces. The technique is promising for a wide range of applications, such as interferometric measurement using ZnCd QDs, bactericidal effects of CuNPs against methicillin-resistant Staphylococcus aureus (MIC 100 = 0.14 mg/ mL), and visible light switchable (ON/OFF) nanozymatic reactors employing SeNPs. We suggest light-triggered chemistry based on thiols and metal ions for effective "soft" synthesis of various nanoparticles and NPs-based devices.

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