Electrochemical observation of a metal/insulator transition by scanning electrochemical microscopy

Article Abstract:

The novel use of the scanning electrochemical microscope to follow the compression of a monolayer of monodisperse silver thiol-capped nanoparticles on a Langmuir trough is presented. The result reveals that the transition from an insulating to conductive behavior with compression can be followed.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Analytical Laboratory Instrument Manufacturing, Analytical instruments, Mercaptans, Scanning Microscopy, Silver compounds, Thiols, Chemical properties

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Large resonant stokes shift in CdS nanocrystals

Article Abstract:

The electronic spectrum of CdS colloidal quantum dots (QDs) with a radius of 1.0-2.3 nm was studied by low-temperature photoluminescence excitation spectroscopy. CdS QDs were found to exhibit a resonant Stokes shift of ~20-70 meV, which was ~4 times larger than similarly sized CdSe QDs.

Science & research, All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Cadmium Compounds, Research, Chemistry, Physical and theoretical, Physical chemistry, Photoluminescence

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