Transmetalation reaction between hydrophobic silver nanoparticles and aqueous chloroaurate ions at the air-water interface

Renu Pasricha, Anita Swami, Murali Sastry

Research output: Contribution to journalArticle

Abstract

The transmetalation reaction between a sacrificial nanoparticle and more noble metal ions in solution has emerged as a novel method for creating unique hollow and bimetallic nanostructures. In this report, we investigate the possibility of carrying out the transmetalation reaction between hydrophobic silver nanoparticles assembled and constrained at the air-water interface and subphase gold ions. We observe that facile reduction of the subphase gold ions by the sacrificial silver nanoparticles occurs resulting in the formation of elongated gold nanostructures that appear to cross-link the sacrificial silver particles. This transmetalation reaction may be modulated by the insertion of an electrostatic barrier in the form of an ionizable lipid monolayer between the silver nanoparticles and the aqueous gold ions that impacts the gold nanoparticle assembly. Transmetalation reactions between nanoparticles constrained into a close-packed structure and appropriate metal ions could lead to a new strategy for metallic cross-linking of nanoparticles and generation of coatings with promising optoelectonic behavior.

Original languageEnglish (US)
Pages (from-to)19620-19626
Number of pages7
JournalJournal of Physical Chemistry B
Volume109
Issue number42
DOIs
StatePublished - Oct 27 2005

Fingerprint

Silver
silver
Ions
Nanoparticles
Gold
nanoparticles
Water
air
Air
gold
water
ions
Metal ions
Nanostructures
metal ions
ion impact
Precious metals
noble metals
Lipids
lipids

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Transmetalation reaction between hydrophobic silver nanoparticles and aqueous chloroaurate ions at the air-water interface. / Pasricha, Renu; Swami, Anita; Sastry, Murali.

In: Journal of Physical Chemistry B, Vol. 109, No. 42, 27.10.2005, p. 19620-19626.

Research output: Contribution to journalArticle

@article{9b25649e5ccd48f3a2adfa1c302af561,
title = "Transmetalation reaction between hydrophobic silver nanoparticles and aqueous chloroaurate ions at the air-water interface",
abstract = "The transmetalation reaction between a sacrificial nanoparticle and more noble metal ions in solution has emerged as a novel method for creating unique hollow and bimetallic nanostructures. In this report, we investigate the possibility of carrying out the transmetalation reaction between hydrophobic silver nanoparticles assembled and constrained at the air-water interface and subphase gold ions. We observe that facile reduction of the subphase gold ions by the sacrificial silver nanoparticles occurs resulting in the formation of elongated gold nanostructures that appear to cross-link the sacrificial silver particles. This transmetalation reaction may be modulated by the insertion of an electrostatic barrier in the form of an ionizable lipid monolayer between the silver nanoparticles and the aqueous gold ions that impacts the gold nanoparticle assembly. Transmetalation reactions between nanoparticles constrained into a close-packed structure and appropriate metal ions could lead to a new strategy for metallic cross-linking of nanoparticles and generation of coatings with promising optoelectonic behavior.",
author = "Renu Pasricha and Anita Swami and Murali Sastry",
year = "2005",
month = "10",
day = "27",
doi = "10.1021/jp0530552",
language = "English (US)",
volume = "109",
pages = "19620--19626",
journal = "Journal of Physical Chemistry B",
issn = "1520-6106",
number = "42",

}

TY - JOUR

T1 - Transmetalation reaction between hydrophobic silver nanoparticles and aqueous chloroaurate ions at the air-water interface

AU - Pasricha, Renu

AU - Swami, Anita

AU - Sastry, Murali

PY - 2005/10/27

Y1 - 2005/10/27

N2 - The transmetalation reaction between a sacrificial nanoparticle and more noble metal ions in solution has emerged as a novel method for creating unique hollow and bimetallic nanostructures. In this report, we investigate the possibility of carrying out the transmetalation reaction between hydrophobic silver nanoparticles assembled and constrained at the air-water interface and subphase gold ions. We observe that facile reduction of the subphase gold ions by the sacrificial silver nanoparticles occurs resulting in the formation of elongated gold nanostructures that appear to cross-link the sacrificial silver particles. This transmetalation reaction may be modulated by the insertion of an electrostatic barrier in the form of an ionizable lipid monolayer between the silver nanoparticles and the aqueous gold ions that impacts the gold nanoparticle assembly. Transmetalation reactions between nanoparticles constrained into a close-packed structure and appropriate metal ions could lead to a new strategy for metallic cross-linking of nanoparticles and generation of coatings with promising optoelectonic behavior.

AB - The transmetalation reaction between a sacrificial nanoparticle and more noble metal ions in solution has emerged as a novel method for creating unique hollow and bimetallic nanostructures. In this report, we investigate the possibility of carrying out the transmetalation reaction between hydrophobic silver nanoparticles assembled and constrained at the air-water interface and subphase gold ions. We observe that facile reduction of the subphase gold ions by the sacrificial silver nanoparticles occurs resulting in the formation of elongated gold nanostructures that appear to cross-link the sacrificial silver particles. This transmetalation reaction may be modulated by the insertion of an electrostatic barrier in the form of an ionizable lipid monolayer between the silver nanoparticles and the aqueous gold ions that impacts the gold nanoparticle assembly. Transmetalation reactions between nanoparticles constrained into a close-packed structure and appropriate metal ions could lead to a new strategy for metallic cross-linking of nanoparticles and generation of coatings with promising optoelectonic behavior.

UR - http://www.scopus.com/inward/record.url?scp=27744491383&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=27744491383&partnerID=8YFLogxK

U2 - 10.1021/jp0530552

DO - 10.1021/jp0530552

M3 - Article

VL - 109

SP - 19620

EP - 19626

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

SN - 1520-6106

IS - 42

ER -