What are these Raman peaks near 2000 1/cm from gold nanostars?

29 January 2020 1 6K Report

I am measuring Raman scattering of dried sodium citrate capped gold nanostars and observed strong peaks around 2000 1/cm and 2150 1/cm and can not identify them. These samples were mixed with 0.8% by volume 2-propanol.

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