Comparative Study of the Self-Assembly of Gold and Silver Nanoparticles onto Thiophene Oil

    Authors

    M. Gadogbe; S. M. Ansar; I. W. Chu; S. L. Zou;D. M. Zhang

    Comments

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    Abbreviated Journal Title

    Langmuir

    Keywords

    SURFACE-ENHANCED RAMAN; LIQUID-LIQUID INTERFACE; LIQUID/LIQUID; INTERFACES; WATER/OIL INTERFACE; MONOLAYER ARRAYS; LARGE-SCALE; SERS; ADSORPTION; FILMS; SCATTERING; Chemistry, Multidisciplinary; Chemistry, Physical; Materials Science, ; Multidisciplinary

    Abstract

    Nanoparticle self-assembly is fundamentally important for bottom-up functional device fabrication. Currently, most nanoparticle self-assembly has been achieved with gold nanoparticles (AuNPs) functionalized with surfactants, polymeric materials, or cross-linkers. Reported herein is a facile synthesis of gold and silver nanoparticle (AgNP) films assembled onto thiophene oil by simply vortex mixing neat thiophene with colloidal AuNPs or AgNPs for similar to 1 min. The AuNP film can be made using every type of colloidal AuNPs we have explored, including sodium borohydride-reduced AuNPs with a diameter of similar to 5 nm, tannic acid-reduced AuNPs of similar to 10 nm diameter, and citrate-reduced AuNPs with particle sizes of similar to 13 and similar to 30 nm diameter. The AuNP film has excellent stability and it is extremely flexible. It can be stretched, shrunken, and deformed accordingly by changing the volume or shape of the enclosed thiophene oil. However, the AgNP film is unstable, and it can be rapidly discolored and disintegrated into small flakes that float on the thiophene surface. The AuNP and AgNP films prepared in the glass vials can be readily transferred to glass slides and metal substrates for surface-enhanced Raman spectral acquisition.

    Journal Title

    Langmuir

    Volume

    30

    Issue/Number

    39

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    11520

    Last Page

    11527

    WOS Identifier

    WOS:000343017600004

    ISSN

    0743-7463

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