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Functionalization of Nanofibrillated Cellulose with Silver Nanoclusters: Fluorescence and Antibacterial Activity
Author(s) -
Díez Isabel,
Eronen Paula,
Österberg Monika,
Linder Markus B.,
Ikkala Olli,
Ras Robin H. A.
Publication year - 2011
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.201100099
Subject(s) - nanoclusters , nanocellulose , cellulose , nanofiber , surface modification , fluorescence , oxidized cellulose , materials science , polymer chemistry , silver nanoparticle , supramolecular chemistry , chemical engineering , chemistry , nanoparticle , nanotechnology , organic chemistry , crystal structure , physics , quantum mechanics , engineering
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.