Hello,
We are getting pretty nice self-assembled gold monolayers on glass slides through 3-aminopropyltrimethoxysilane. We then usually go on to coat the gold with layers of polyethylene glycols.
What I'm wondering is what is the best condition to store these fibers over the course of one week. They almost seem to degrade in time in terms of the response and the sharpness of their optical spectrum. In part, this is probably due to buildup of contaminants on the surface of the fiber, or other long-term effects such as mobility and aggregation of AuNPs on the layer.
We are more careful now to use highly filtered buffers; alternatively, we keep the fibers in air sometimes for storying (although not refridgerated). I'm wondering if anyone could suggest conditions for optimal storage to preserve the AuNP-coated fibers, either in solution or in dry conditions.
Thanks
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