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Self-Assembly of Mechanoplasmonic Bacterial Cellulose-Metal Nanoparticle Composites
Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden.
Division of Solid Mechanics, Department of Management and Engineering (IEI), Linköping University, Linköping, Sweden.
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, Barcelona, Spain.
Laboratory of Molecular Materials, Division of Biophysics and Bioengineering, Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping, Sweden; School of Engineering and Applied Sciences, Harvard University, Cambridge MA, United States.
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2020 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 30, no 40, article id 2004766Article in journal (Refereed) Published
Abstract [en]

Nanocomposites of metal nanoparticles (NPs) and bacterial nanocellulose (BC) enable fabrication of soft and biocompatible materials for optical, catalytic, electronic, and biomedical applications. Current BC-NP nanocomposites are typically prepared by in situ synthesis of the NPs or electrostatic adsorption of surface functionalized NPs, which limits possibilities to control and tune NP size, shape, concentration, and surface chemistry and influences the properties and performance of the materials. Here a self-assembly strategy is described for fabrication of complex and well-defined BC-NP composites using colloidal gold and silver NPs of different sizes, shapes, and concentrations. The self-assembly process results in nanocomposites with distinct biophysical and optical properties. In addition to antibacterial materials and materials with excellent senor performance, materials with unique mechanoplasmonic properties are developed. The homogenous incorporation of plasmonic gold NPs in the BC enables extensive modulation of the optical properties by mechanical stimuli. Compression gives rise to near-field coupling between adsorbed NPs, resulting in tunable spectral variations and enhanced broadband absorption that amplify both nonlinear optical and thermoplasmonic effects and enables novel biosensing strategies.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2020. Vol. 30, no 40, article id 2004766
Keywords [en]
antimicrobials, bacterial cellulose, gold nanoparticles, nanocomposite, sensors
National Category
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy)
Identifiers
URN: urn:nbn:se:oru:diva-85180DOI: 10.1002/adfm.202004766ISI: 000557380700001Scopus ID: 2-s2.0-85089155627OAI: oai:DiVA.org:oru-85180DiVA, id: diva2:1462732
Funder
Swedish Foundation for Strategic Research , FFL15-0026 RMX18-0039Vinnova, 2016-05156Knut and Alice Wallenberg Foundation, KAW 2016.0231Swedish Research Council, 2017-05178 2015-05002
Note

Funding Agencies:

Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linköping University  2009-00971

Spanish Ministerio de Ciencia, Innovacion y Universidades (MICINN)  MAT2016-77391-R

Severo Ochoa Centres of Excellence programme - Spanish Research Agency (AEI)  SEV-2017-0706

Available from: 2020-08-31 Created: 2020-08-31 Last updated: 2024-01-02Bibliographically approved

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Khalaf, HazemBengtsson, Torbjörn

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