Small DNA additives to polyelectrolyte multilayers promote formation of ultrafine gold nanoparticles with enhanced catalytic activity
- 18 Downloads
Polymer matrices are important host materials for nesting nanoparticles to be used in photonic, catalytic, environmental, and other applications. Several past studies suggested a unique role of DNA macromolecular template in the process of noble metal nanoparticle (NP) formation and growth; yet, no comparative studies with other polymeric matrices were performed. In order to address the effect of DNA on metal NP formation and catalytic performance, we synthesized Au NP in PSSNa/PAH/DNA multilayered films containing varied amounts of DNA and systematically studied morphology of multilayers, structure of gold NP formed in the multilayers, and catalytic properties of the NP. We found that decrease of Au NP size due to increase of DNA contents in the multilayers caused significant enhancement in the hybrid material catalytic properties.
KeywordsDNA Multilayers Gold nanoparticles Size control Catalysis
Maruha Nichiro Holdings, Inc. (Japan) is gratefully acknowledged for free DNA samples extracted from salmon milt. We thank High Voltage Electron Microscope Laboratory at Institute of Materials and Systems for Sustainability, Nagoya University, for the assistance with transmission electron microscopy observations.
This work was supported by JSPS KAKENHI Grant Number 25620183 (Grant-in-Aid for Exploratory Research).
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 6.Maeda Y, Zinchenko A, Lopatina LI, Sergeyev VG, Murata S (2013) Extraction of noble and rare-earth metals from aqueous solutions by DNA cross-linked hydrogels. Chem Plus Chem 78(7):619–622Google Scholar
- 11.Liu XD, Yamada M, Matsunaga M, Nishi N (2007) Functional materials derived from DNA. Adv Polym Sci 209:149–178Google Scholar
- 19.Zinchenko A, Nagahama C, Murata S (2016) Gold nanoparticles in DNA-based multilayer films: synthesis, size control, and influence of the multilayer structure on catalytic properties. Chem Nano Mat 2(2):125–132Google Scholar
- 22.Decher G (1996) Layered nanoarchitectures via directed assembly of anionic and cationic molecules. Pergamon Press, OxfordGoogle Scholar
- 31.Zinchenko A., Che Y, Taniguchi S, Lopatina LI, Sergeyev VG, Murata S (2016) Metallization of DNA hydrogel: application of soft matter host for preparation and nesting of catalytic nanoparticles. J Nanopart Res 18(7):179Google Scholar