Abstract
ABSTRACT Ginkgo leaf tea has been used as a reducing agent for gold nanoparticles and nanoplatelets. Synthesis is performed via direct heating and microwave heating. Anisotropic nanoplatelet formation is diminished in favor of isotropic nanoparticle formation as the reaction temperature is increased via direct heating. When microwave mediation is used, the extinction spectra indicate less difference among the sols, suggesting athermal effects. Molecular weight filtration studies of the ginkgo tea and the microwave-mediated heating results indicate that the reducing agent in the ginkgo leaf tea is a large molecule, like a protein, rather than a small molecule, like a simple sugar.
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