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    • Growth of monolayer and trilayer of gold nanoparticles attached octadecanethiol films on hydrophilic silicon surface using Langmuir–Blodgett method

      SURESH KUMAR RAKTIM J SARMAH SARATHI KUNDU

      Volume 45 Published: 19 October 2022 Article ID 0208

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/boms/045/0208

    • Keywords

       

      Octadecanethiol monolayer; Au nanoparticles; out-of-plane structure; X-ray reflectivity; TEM; FTIR.

    • Abstract

       

      Gold nanoparticles (AuNPs) are formed below the octadecanethiol (ODT) Langmuir monolayer and the nanoparticles attached ODT monolayer is deposited on hydrophilic silicon substrate using the conventional Langmuir– Blodgett (LB) technique. X-ray reflectivity and atomic force microscopy analysis confirm that effectively monolayer- and trilayer-like structures are developed on the solid surface for single up stroke and multiple numbers of up-down-up cyclesof the substrate through the ODT layer. Transmission electron microscopy provides the size distribution of the deposited nanoparticles, while Fourier transform infrared study confirms the deposition of ODT layer and leaching of some thiol molecules due to multiple up/down strokes of the substrate. Effective growth of only single and double layers of AuNPs is possible on hydrophilic solid surface by the conventional LB method.

    • Author Affiliations

       

      SURESH KUMAR1 2 RAKTIM J SARMAH1 SARATHI KUNDU1

      1. Soft Nano Laboratory, Physical Sciences Division, Institute of Advanced Study in Science and Technology, Guwahati 781035, India
      2. Regional Science Centre (National Council of Science Museums), Guwahati 781022, India

    • Dates

       
      Published
      19 October 2022
      Manuscript received
      31 January 2022
      Accepted
      20 June 2022
      Final version published online
      19 October 2022

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