Some century-old chemistry could have a strong impact on important issues in biosensors and other nanotech devices, according to a Purdue University research group.
A team led by Alexander Wei has shown that amines, a large and important class of organic molecules, when mixed with carbon disulfide, can bond to gold more robustly than thiols, which are commonly used materials for giving new functions to metal surfaces. Gold surfaces are often used as baseplates of sensors and in nanomaterials, and scientists have been searching for stable organic coatings they can attach to gold to form an interface between the organic and inorganic worlds. The group’s findings suggest that amines may be the best candidate group of such materials.
"Amines could allow us to expand the range of molecules which can be incorporated into sensors for the biotech field," said Wei, who is an associate professor of chemistry in Purdue’s College of Science. "Amines react with carbon disulfide to form dithiocarbamates (DTCs) and appear to be better suited for coating surfaces than thiols, which have been the standard thus far. The DTC chemistry itself has been around for over 100 years, but we think it can offer many opportunities for current applications in biosensors and nanotechnology."
Chad Boutin | EurekAlert!
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