Effect of Substrate Morphology on the Crystallization of Leucine on Gold Surface Modified with a Self-assembled Monolayer
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The effect of the surface morphology of gold-deposited quartz substrate on the enantioselective crystallization of leucine was investigated by using quartz crystal microbalance (QCM) and X-ray diffraction methods. The gold substrate was modified with a self-assembled monolayer with covalently attached <FONT SIZE="-2">D</FONT>-leucine molecules. For a rough surface with root-mean-square (RMS) roughness of 17 nm, the QCM measurement showed a continuous decrease in frequency, while for a smooth surface with RMS roughness of 2 nm, essentially no change in frequency was observed. Nevertheless, leucine crystals with high crystallinity were clearly formed on the smooth surface.
- Chemistry Letters
Chemistry Letters 35(4), 438-439, 2006-04-05
The Chemical Society of Japan