title: Functionalization of nanofibrillated cellulose with silver nanoclusters: fluorescence and antibacterial activity.
abstract: Native cellulose nanofibers are functionalized using luminescent metal nanoclusters to form a novel type of functional nanocellulose/nanocluster composite. Previously, various types of cellulose fibers have been functionalized with large, non-luminescent metal nanoparticles. Here, mechanically strong native cellulose nanofibers, also called nanofibrillatedcellulose (NFC), microfibrillatedcellulose (MFC) ornanocellulose, disintegrated from macroscopic cellulose pulp fibers are used as support for small and fluorescent silver nanoclusters. The functionalization occurs in a supramolecular manner, mediated by poly(methacrylic acid) that protects nanoclusters while it allows hydrogen bonding with cellulose, leading to composites with fluorescence and antibacterial activity.
authors: Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), P.O. Box 15100, FIN-02150 Espoo, Finland.
authors: Isabel
authors: I
authors: Díez
authors: Paula
authors: P
authors: Eronen
authors: Monika
authors: M
authors: Österberg
authors: Markus B
authors: MB
authors: Linder
authors: Olli
authors: O
authors: Ikkala
authors: Robin H A
authors: RH
authors: Ras
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology*; D029662:Betula / Q000737:chemistry; D002482:Cellulose / Q000737:chemistry* / Q000648:ultrastructure; D004926:Escherichia coli / Q000187:drug effects; D008422:Materials Testing; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure*; D012834:Silver / Q000737:chemistry*; D013050:Spectrometry, Fluorescence
chemical_list: D000900:Anti-Bacterial Agents; D012834:Silver; D002482:Cellulose