Photo-activated antibacterial effect of bimetallic nanocomposite grafted on modified PET substrate
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F25%3A73632608" target="_blank" >RIV/61989592:15310/25:73632608 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S3050475925008632" target="_blank" >https://www.sciencedirect.com/science/article/pii/S3050475925008632</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nexres.2025.100996" target="_blank" >10.1016/j.nexres.2025.100996</a>
Alternative languages
Result language
angličtina
Original language name
Photo-activated antibacterial effect of bimetallic nanocomposite grafted on modified PET substrate
Original language description
The current work aims to test (a) possibility of grafting (via a dithiol linker) and (b) applicability of bimetallic nanocomposites (developed in our recent work) as photo-stimulated antibacterial coatings. Therefore, bimetallic nanocomposites, containing (i) Au nanostructures (AuNS) embedded in a protein matrix and (ii) superparamagnetic iron oxide nanoparticles (SPION) attached to the same protein scaffold (bovine serum albumin), were grafted on a flexible and UVA-transparent substrate (PET, polyethylene terephthalate). Plasma-treatment and dithiol surface modification of PET were successfully employed to increase the probability of bimetallic nanocomposite attachment. It was evidenced by XPS (X-ray photoelectron spectroscopy) that albeit AuNS are bound up in the protein by Au-S linkage, grafting on plasma-treated surface-modified PET is enabled due to the same bonding type. The final system (Au-BSA-SPION@pl-BPD-PET) revealed no antibacterial activity against Escherichia coli under ambient conditions as it was expected. However, when photo-activated by UVA radiation (365 nm), applied for a short period (5 min), its antibacterial activity was switched on. Bimetallic nanocomposite can be thus considered as a photo-switchable functional surface coating of PET. To the best of our knowledge, it is the very first photo-stimulated antibacterial surface coating that is based on bimetallic AuNS-SPION nanocomposites.
Czech name
—
Czech description
—
Classification
Type
J<sub>ost</sub> - Miscellaneous article in a specialist periodical
CEP classification
—
OECD FORD branch
21001 - Nano-materials (production and properties)
Result continuities
Project
<a href="/en/project/GA25-15590S" target="_blank" >GA25-15590S: Recyclable Magnetic Plasmonic Bimetallic Nanomaterials Enveloped by Smart Polymers for SERS-Detection and Removal of Selected Pollutants from Water</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Next Research
ISSN
3050-4759
e-ISSN
3050-4759
Volume of the periodical
2
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
"100996-1"-"100996-8"
UT code for WoS article
—
EID of the result in the Scopus database
—