eCommons

 

Small Angle X-Ray Scattering of Aggregated DNA-Capped Colloidal Gold

Other Titles

Abstract

Nanoparticles conjugated with DNA ligands possess 1) assembly behavior that may be controlled by DNA length and sequence, as well as the presence of other ligands, and 2) material properties determined by the nanoparticle size, shape, and chemical identity. The combination of these features could allow for the production of novel materials with unique or useful properties. Previous work has demonstrated the application of DNA-capped gold nanoparticles for colorimetric DNA detection, and ordered assemblies of DNA-capped gold nanoparticles have also been reported. Here, small-angle x-ray scattering (SAXS) from a synchrotron source was used to characterize ordered assemblies of DNA-capped gold nanoparticles. The extracted structure factor obtained from these diffraction experiments confirmed the assembly of gold nanoparticles into crystallites with well-defined internal order, demonstrating the formation of a face-centered cubic (FCC) crystal lattice structure. Applying basic principles of x-ray diffraction such as the Scherrer Formula, the interparticle spacing and average size of crystallite aggregates were determined. The experimental approach outlined in this work may lead to the synthesis of programmable materials with unusual optical or electrical properties or controllable self-assembled topology. The ultimate goal of research in these types of DNA-capped colloidal systems is the development of a modular toolkit approach for nanoparticle self assembly.

Journal / Series

Volume & Issue

Description

Sponsorship

Date Issued

2008-08-02T15:36:03Z

Publisher

Keywords

Location

Effective Date

Expiration Date

Sector

Employer

Union

Union Local

NAICS

Number of Workers

Committee Chair

Committee Co-Chair

Committee Member

Degree Discipline

Degree Name

Degree Level

Related Version

Related DOI

Related To

Related Part

Based on Related Item

Has Other Format(s)

Part of Related Item

Related To

Related Publication(s)

Link(s) to Related Publication(s)

References

Link(s) to Reference(s)

Previously Published As

Government Document

ISBN

ISMN

ISSN

Other Identifiers

Rights

Rights URI

Types

Accessibility Feature

Accessibility Hazard

Accessibility Summary

Link(s) to Catalog Record