Optical properties of gold colloids formed in inverse micelles

Journal Article · Tue Jun 15 00:00:00 EDT 1993 · Journal of Chemical Physics; (United States)

DOI:https://doi.org/10.1063/1.464320· OSTI ID:6606975

Wilcoxon, J P; Williamson, R L; Baughman, R ^[1]

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1. Organizations 1153, 1843, and 1143 Sandia National Laboratories, Albuquerque, New Mexico 87108 (United States)

We discuss the formation of gold metal colloids in a variety of surfactant/solvent systems. Static and dynamic light scattering, small angle x-ray and neutron scattering, TEM analysis, and UV-visible absorbance are used to characterize the kinetics of formation and final colloid stability. These gold colloids exhibit a dramatic blueshift and broadening of the plasmon resonance with decreasing colloid size. Several types of reduction method are discussed and differences between micelle (water-free) or microemulsions as reaction media are compared. Use of inverse micelles allows smaller clusters to be formed with greater long-term stability.

• DOE Contract Number: AC04-76DP00789
• OSTI ID: 6606975
• Journal Information: Journal of Chemical Physics; (United States), Vol. 98:12; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
COLLOIDS
STABILITY
GOLD
ABSORPTION SPECTRA
AQUEOUS SOLUTIONS
BORON HYDRIDES
COMPARATIVE EVALUATIONS
HYDRAZINE
LASERS
LIGHT SCATTERING
MICROEMULSIONS
NEUTRON DIFFRACTION
NUCLEATION
OPTICAL PROPERTIES
PHOTOLYSIS
PLASMONS
PRECURSOR
PRODUCTION
PULSES
REDUCTION
RESONANCE
SIZE
SODIUM HYDRIDES
SOLVENTS
SURFACTANTS
TRANSMISSION ELECTRON MICROSCOPY
ULTRAVIOLET RADIATION
VISIBLE RADIATION
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
BORON COMPOUNDS
CHEMICAL REACTIONS
COHERENT SCATTERING
DECOMPOSITION
DIFFRACTION
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELECTRON MICROSCOPY
ELEMENTS
EMULSIONS
EVALUATION
HYDRIDES
HYDROGEN COMPOUNDS
METALS
MICROSCOPY
MIXTURES
NITROGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIATIONS
SCATTERING
SODIUM COMPOUNDS
SOLUTIONS
SPECTRA
TRANSITION ELEMENTS
400201* - Chemical & Physicochemical Properties