RT info:eu-repo/semantics/article
T1 Multifunctional nanocarriers based on chitosan oligomers and graphitic carbon nitride assembly
A1 Santiago Aliste, Alberto
A1 Sánchez Hernández, Eva
A1 Langa Lomba, Natalia
A1 González García, Vicente
A1 Casanova Gascón, José
A1 Martín Gil, Jesús
A1 Martín Ramos, Pablo
K1 Oligomers
K1 Graphitic carbon nitride
K1 Nanostructured materials
K1 Materiales nanoestructurados
K1 Nanotechnology
K1 Nanotecnología
K1 Plant pathology
K1 Viticultura
K1 Vid
K1 Microorganismos fitopatógenos
K1 Plant diseases
K1 Plantas - Enfermedades y plagas
K1 Pests - Integrated control
K1 Control integrado de plagas
K1 Photocatalysis
K1 3102 Ingeniería Agrícola
K1 3108 Fitopatología
AB In this study, a graphitic carbon nitride and chitosan oligomers (g-C3N4–COS) nanocarrier assembly, which was obtained by cross-linking with methacrylic anhydride (MA), was synthesized and characterized. Its characterization was carried out using infrared spectroscopy, elemental and thermal analyses, and transmission electron microscopy. The new nanocarriers (NCs), with an average particle size of 85 nm in diameter and a 0.25 dispersity index, showed photocatalytic activity (associated with the g-C3N4 moiety), susceptibility to enzymatic degradation (due to the presence of the COS moiety), and high encapsulation and moderate-high release efficiencies (>95% and >74%, respectively). As a proof of concept, the visible-light-driven photocatalytic activity of the NCs was tested for rhodamine B degradation and the reduction of uranium(VI) to uranium(IV). Regarding the potential of the nanocarriers for the encapsulation and delivery of bioactive products for crop protection, NCs loaded with Rubia tinctorum extracts were investigated in vitro against three Vitis vinifera phytopathogens (viz. Neofusicoccum parvum, Diplodia seriata, and Xylophilus ampelinus), obtaining minimum inhibitory concentration values of 750, 250, and 187.5 µg·mL−1, respectively. Their antifungal activity was further tested in vivo as a pruning wound protection product in young ‘Tempranillo’ grapevine plants that were artificially infected with the two aforementioned species of the family Botryosphaeriaceae, finding a significant reduction of the necrosis lengths in the inner woody tissues. Therefore, g-C3N4-MA-COS NCs may be put forward as a multifunctional platform for environmental and agrochemical delivery applications.
PB MDPI
SN 1996-1944
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/60529
UL https://uvadoc.uva.es/handle/10324/60529
LA eng
NO Materials, 2022, Vol. 15, Nº. 24, 8981
NO Producción Científica
DS UVaDOC
RD 17-abr-2025