Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles

J. H. Adair, T. Li, T. Kido, K. Havey, Joo Ho Moon, J. Mecholsky, A. Morrone, D. R. Talham, M. H. Ludwig, L. Wang

Research output: Contribution to journalReview article

168 Citations (Scopus)

Abstract

By using self-assembly molecules as a template, nanometer-sized plate-like metal oxide and semiconductor particles can be obtained by confined growth inside the lamellar bilayers of microemulsion systems. It was found that a strong chemical affinity between the metal salt and the polar head group of amphiphilic molecules and the anisotropic structure of microemulsion systems play a premier role in the anisotropic growth. Nanometer-sized composite particles (nano-composites) with a core-shell structure have been prepared by arrested precipitation of metal or semiconductor clusters in reverse micelles, followed by hydrolysis and condensation of organometallic precursors in the microemulsion matrices. Temporally discrete nucleation and growth at elevated temperature (70°C) give the resulting particles a narrow size distribution and defined crystallinity. Both the size of the core particles and the thickness of the coating layers can be varied by controlling processing parameters such as the ratio of water to surfactant and the ratio of water to organometallic precursors. By controlling the pH conditions and aging temperatures, a transparent gel composing the nanometer-sized inorganic clusters has been obtained. Optical properties of nanometer-sized composite particles are reviewed. For silver metal clusters and nano-composites, the shift of the absorption peak at the surface-plasmon resonance frequency due to the classical limited mean-free path of the conduction electrons or quantum size effects has been observed. The enhanced third-order non-linear susceptibility of the silver nano-composites results from the local-field enhancement and size effects, which has been experimentally demonstrated by the optical phase-conjugation technique.

Original languageEnglish
Pages (from-to)139-242
Number of pages104
JournalMaterials Science and Engineering R: Reports
Volume23
Issue number4-5
DOIs
Publication statusPublished - 1998 Aug 20

Fingerprint

Platelets
Microemulsions
Metals
Composite materials
Organometallics
Silver
Optical phase conjugation
Semiconductor materials
Molecules
Water
Surface plasmon resonance
Micelles
Surface-Active Agents
Self assembly
Oxides
Condensation
Hydrolysis
Surface active agents
Nucleation
Gels

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Adair, J. H. ; Li, T. ; Kido, T. ; Havey, K. ; Moon, Joo Ho ; Mecholsky, J. ; Morrone, A. ; Talham, D. R. ; Ludwig, M. H. ; Wang, L. / Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles. In: Materials Science and Engineering R: Reports. 1998 ; Vol. 23, No. 4-5. pp. 139-242.
@article{5d2178053a7c4aecb07704d61dcf1f6f,
title = "Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles",
abstract = "By using self-assembly molecules as a template, nanometer-sized plate-like metal oxide and semiconductor particles can be obtained by confined growth inside the lamellar bilayers of microemulsion systems. It was found that a strong chemical affinity between the metal salt and the polar head group of amphiphilic molecules and the anisotropic structure of microemulsion systems play a premier role in the anisotropic growth. Nanometer-sized composite particles (nano-composites) with a core-shell structure have been prepared by arrested precipitation of metal or semiconductor clusters in reverse micelles, followed by hydrolysis and condensation of organometallic precursors in the microemulsion matrices. Temporally discrete nucleation and growth at elevated temperature (70°C) give the resulting particles a narrow size distribution and defined crystallinity. Both the size of the core particles and the thickness of the coating layers can be varied by controlling processing parameters such as the ratio of water to surfactant and the ratio of water to organometallic precursors. By controlling the pH conditions and aging temperatures, a transparent gel composing the nanometer-sized inorganic clusters has been obtained. Optical properties of nanometer-sized composite particles are reviewed. For silver metal clusters and nano-composites, the shift of the absorption peak at the surface-plasmon resonance frequency due to the classical limited mean-free path of the conduction electrons or quantum size effects has been observed. The enhanced third-order non-linear susceptibility of the silver nano-composites results from the local-field enhancement and size effects, which has been experimentally demonstrated by the optical phase-conjugation technique.",
author = "Adair, {J. H.} and T. Li and T. Kido and K. Havey and Moon, {Joo Ho} and J. Mecholsky and A. Morrone and Talham, {D. R.} and Ludwig, {M. H.} and L. Wang",
year = "1998",
month = "8",
day = "20",
doi = "10.1016/S0927-796X(98)80001-6",
language = "English",
volume = "23",
pages = "139--242",
journal = "Materials Science and Engineering: R: Reports",
issn = "0927-796X",
publisher = "Elsevier BV",
number = "4-5",

}

Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles. / Adair, J. H.; Li, T.; Kido, T.; Havey, K.; Moon, Joo Ho; Mecholsky, J.; Morrone, A.; Talham, D. R.; Ludwig, M. H.; Wang, L.

In: Materials Science and Engineering R: Reports, Vol. 23, No. 4-5, 20.08.1998, p. 139-242.

Research output: Contribution to journalReview article

TY - JOUR

T1 - Recent developments in the preparation and properties of nanometer-size spherical and platelet-shaped particles and composite particles

AU - Adair, J. H.

AU - Li, T.

AU - Kido, T.

AU - Havey, K.

AU - Moon, Joo Ho

AU - Mecholsky, J.

AU - Morrone, A.

AU - Talham, D. R.

AU - Ludwig, M. H.

AU - Wang, L.

PY - 1998/8/20

Y1 - 1998/8/20

N2 - By using self-assembly molecules as a template, nanometer-sized plate-like metal oxide and semiconductor particles can be obtained by confined growth inside the lamellar bilayers of microemulsion systems. It was found that a strong chemical affinity between the metal salt and the polar head group of amphiphilic molecules and the anisotropic structure of microemulsion systems play a premier role in the anisotropic growth. Nanometer-sized composite particles (nano-composites) with a core-shell structure have been prepared by arrested precipitation of metal or semiconductor clusters in reverse micelles, followed by hydrolysis and condensation of organometallic precursors in the microemulsion matrices. Temporally discrete nucleation and growth at elevated temperature (70°C) give the resulting particles a narrow size distribution and defined crystallinity. Both the size of the core particles and the thickness of the coating layers can be varied by controlling processing parameters such as the ratio of water to surfactant and the ratio of water to organometallic precursors. By controlling the pH conditions and aging temperatures, a transparent gel composing the nanometer-sized inorganic clusters has been obtained. Optical properties of nanometer-sized composite particles are reviewed. For silver metal clusters and nano-composites, the shift of the absorption peak at the surface-plasmon resonance frequency due to the classical limited mean-free path of the conduction electrons or quantum size effects has been observed. The enhanced third-order non-linear susceptibility of the silver nano-composites results from the local-field enhancement and size effects, which has been experimentally demonstrated by the optical phase-conjugation technique.

AB - By using self-assembly molecules as a template, nanometer-sized plate-like metal oxide and semiconductor particles can be obtained by confined growth inside the lamellar bilayers of microemulsion systems. It was found that a strong chemical affinity between the metal salt and the polar head group of amphiphilic molecules and the anisotropic structure of microemulsion systems play a premier role in the anisotropic growth. Nanometer-sized composite particles (nano-composites) with a core-shell structure have been prepared by arrested precipitation of metal or semiconductor clusters in reverse micelles, followed by hydrolysis and condensation of organometallic precursors in the microemulsion matrices. Temporally discrete nucleation and growth at elevated temperature (70°C) give the resulting particles a narrow size distribution and defined crystallinity. Both the size of the core particles and the thickness of the coating layers can be varied by controlling processing parameters such as the ratio of water to surfactant and the ratio of water to organometallic precursors. By controlling the pH conditions and aging temperatures, a transparent gel composing the nanometer-sized inorganic clusters has been obtained. Optical properties of nanometer-sized composite particles are reviewed. For silver metal clusters and nano-composites, the shift of the absorption peak at the surface-plasmon resonance frequency due to the classical limited mean-free path of the conduction electrons or quantum size effects has been observed. The enhanced third-order non-linear susceptibility of the silver nano-composites results from the local-field enhancement and size effects, which has been experimentally demonstrated by the optical phase-conjugation technique.

UR - http://www.scopus.com/inward/record.url?scp=0347243197&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0347243197&partnerID=8YFLogxK

U2 - 10.1016/S0927-796X(98)80001-6

DO - 10.1016/S0927-796X(98)80001-6

M3 - Review article

VL - 23

SP - 139

EP - 242

JO - Materials Science and Engineering: R: Reports

JF - Materials Science and Engineering: R: Reports

SN - 0927-796X

IS - 4-5

ER -