Radiolytic production and properties of ultrasmall CdS particles
- Argonne National Lab., IL (USA)
- Boris Kidric Institute of Nuclear Chemistry, Belgrade (Yugoslavia)
The radiolytic production of CdS particles from solutions containing cadmium ions and a thiol (3-mercapto-1,2-propanediol, RSH) is described. The production of the colloids is initiated by the reaction of solvated electron with the thiol to release HS{sup {minus}} ions. The polynuclear complexes of cadmium with the thiolate form of RSH act as moderators to the growth of the particles and allow reproducible production of practically any predetermined size particles. The complexes at the surface of the particles also stabilize the particles for long periods of time. The particles are strongly fluorescent from size of ca. 8 {angstrom} in radius. Excess electrons in these particles lead to bleaching of the exciton band due to Coulomb screening effects. At higher doses, formation of cadmium atoms leads to increased absorption in the visible range.
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 7025938
- Journal Information:
- Journal of Physical Chemistry; (USA), Vol. 93:11; ISSN 0022-3654
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CADMIUM SULFATES
CHEMICAL PROPERTIES
PRODUCTION
CADMIUM IONS
COLLOIDS
EXPERIMENTAL DATA
MEASURING INSTRUMENTS
MEASURING METHODS
RADIOLYSIS
CADMIUM COMPOUNDS
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
DATA
DECOMPOSITION
DISPERSIONS
INFORMATION
IONS
NUMERICAL DATA
OXYGEN COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
SULFATES
SULFUR COMPOUNDS
360100* - Metals & Alloys
360101 - Metals & Alloys- Preparation & Fabrication
400201 - Chemical & Physicochemical Properties