Published December 2006 | Version v1
Journal article Metadata-only

Stabilization of Pt nanoparticles by single stranded DNA and the binary assembly of Au and Pt nanoparticles without hybridization

Creators

  • 1. National University of Singapore, Department of Chemical and Biomolecular Engineering (Singapore)
  • 2. National University of Singapore, Singapore-MIT Alliance (Singapore)
  • 3. Institute of Materials Research and Engineering (Singapore)

Description

The non-specific interaction between single stranded DNA (ssDNA) and 12 nm Pt nanoparticles is investigated in this work. The data show a strong and non-specific interaction between the two which can be exploited for the stabilization of Pt nanoparticles in aqueous solutions. Based on the experimental findings, a non-hybridization based protocol to assemble 17 nm Au and Pt nanoparticles (12 nm cubic and 3.6 nm spherical) by single-stranded DNA was developed. Transmission electron microscopy (TEM) and UV-visible spectroscopy confirmed that Au and Pt nanoparticles could be assembled by the non-specific interaction in an orderly manner. The experimental results also caution against the potential pitfalls in using DNA melting point analysis to infer metal nanoparticle assembly by DNA hybridization

Additional details

Identifiers

DOI
10.1007/s11051-005-9000-6;

Publishing Information

Journal Title
Journal of Nanoparticle Research
Journal Volume
8
Journal Issue
6
Journal Page Range
p. 1017-1026
ISSN
1388-0764

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39094406
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AQUEOUS SOLUTIONS; DNA; DNA HYBRIDIZATION; INTERACTIONS; MELTING POINTS; NANOSTRUCTURES; PARTICLES; PLATINUM; SPECTROSCOPY; STABILIZATION; TRANSMISSION ELECTRON MICROSCOPY
Descriptors DEC
BIOTECHNOLOGY; DISPERSIONS; ELECTRON MICROSCOPY; ELEMENTS; GENETIC ENGINEERING; HOMOGENEOUS MIXTURES; HYBRIDIZATION; METALS; MICROSCOPY; MIXTURES; NUCLEIC ACID HYBRIDIZATION; NUCLEIC ACIDS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; PLATINUM METALS; SOLUTIONS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENTS; TRANSITION TEMPERATURE

Optional Information

Copyright
Copyright (c) 2005 Springer