Functionalization of Nanofibrillated Cellulose with Silver Nanoclusters: Fluorescence and Antibacterial Activity

Macromolecular Bioscience - Tập 11 Số 9 - Trang 1185-1191 - 2011
Isabel Díez1,2, Paula Eronen3, Monika Österberg3, Markus B. Linder4, Olli Ikkala2, Robin H. A. Ras2
1Current address: Liquid Crystals and Polymers Group, Departamento de Física de la Materia Condensada, Facultad de Ciencias, Universidad de Zaragoza, C./Pedro Cerbuna 12, 50009, Zaragoza, Spain
2Molecular Materials, Department of Applied Physics, Aalto University (formerly Helsinki University of Technology), P.O. Box 15100, FIN-02150 Espoo, Finland
3Forest Products Surface Chemistry Group, Department of Forest Products Technology, School of Chemical Technology, Aalto University, P.O. Box 16300, FIN-00076 Aalto, Espoo, Finland
4VTT Technical Research Center of Finland, Biotechnology, Tietotie 2, FIN-02044, Espoo, Finland

Tóm tắt

AbstractNative 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.magnified image

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Thông tin xuất bản

Macromolecular Bioscience

Tập 11 Số 9

1185-1191

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