Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Quantifying "Softness" of Organic Coatings on Gold Nanoparticles using Correlated Small-Angle X-Ray and Neutron Scattering

Published

Author(s)

Benjamin T. Diroll, Kathleen Weigandt, Davit Jishkariani, Matteo Cargnello, Ryan J. Murphy, Lawrence A. Hough, Christopher B. Murray, Bertrand Donnio

Abstract

Small angle X-ray and neutron scattering provide powerful tools to selectively characterize the inorganic and organic components of hybrid nanomaterials. Using hydrophobic gold nanoparticles coated with several commercial and dendritic thiols, the size of the organic layer on the gold particles is shown to increase from 1.2 nm to 4.1 nm. A comparison between solid state diffraction from self-assembled lattices of nanoparticles and the solution data from neutron scattering suggests that engineering softness/deformability in nanoparticle coatings is less straightforward that simply increasing the organic size. The "dendritic effect" in which higher generations yield increasingly compact molecules explains changes in the deformability of organic ligand shells.
Citation
Nano Letters
Volume
15
Issue
12

Citation

Diroll, B. , Weigandt, K. , Jishkariani, D. , Cargnello, M. , Murphy, R. , Hough, L. , Murray, C. and Donnio, B. (2015), Quantifying "Softness" of Organic Coatings on Gold Nanoparticles using Correlated Small-Angle X-Ray and Neutron Scattering, Nano Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=919641 (Accessed April 14, 2024)
Created December 8, 2015, Updated October 12, 2021