Contact
    Start Publications Robust Gold Nanoparticle Sheets by Ligand Cross-Linking at the ...
    ←  Publication Finder
    Attension

    Robust Gold Nanoparticle Sheets by Ligand Cross-Linking at the Air-Water Interface

    Year: 2017

    Journal: ACS Nano, Volume 11, FEB, page 1292–1300

    Authors: Kosif, Irem; Kratz, Katrina; You, Siheng Sean; Bera, Mrinal K.; Kim, Kyungil; Leahy, Brian; Emrick, Todd; Lee, Ka Yee C.; Lin, Binhua

    Organizations: University of Chicago MRSEC [NSF DMR-1420709]; UMass Amherst MRSEC on Polymers [DMR-0820506]; Materials Research Facility Network (MRFN); National Science Foundation [MCB-1413613, NSF/CHE-1346572]; DOE Office of Science [DE-AC02-06CH11357]

    Keywords: Langmuir monolayer; nanoparticle film; 2D freestanding self-assembly; cross-linking nanoparticles; mechanical response of nanoparticle membranes; liquid surface X-ray scattering optical video microscopy

    We report the results of cross-linking of two-dimensional gold nanoparticle (Au-NP) assemblies at the air water interface in situ. We introduce an aqueous soluble ruthenium benzylidene catalyst into the water subphase to generate a robust, elastic two-dimensional network of nanoparticles containing cyclic olefins in their ligand framework. The most striking feature of the cross-linked Au-NP assemblies is that the extended connectivity of the nanoparticles enables the film to preserve much of its integrity under compression and expansion, features that are absent in its non-cross-linked counterparts. The cross-linking process appears to "stitch" the nanoparticle crystalline domains together, allowing the cross-linked monolayers to behave like a piece of fabric under lateral compression.
    View publication