• Title/Summary/Keyword: Vapor Diffused Molecular Assembly

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Quartz Crystal Microbalance Modified by a Novel Vapor Diffused Molecular Assembly Technique and Measurement of Chiral Mandelic Acid (기상확산 자기조립화법에 QCM수식과 Madelic Acid 키랄물질 측정)

  • Kim, JongMin;Kim, SeungJin;Woo, SunYoung;Jang, SukHee;Kim, Woo-Sik;Chang, SangMok
    • Korean Chemical Engineering Research
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    • v.48 no.5
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    • pp.574-582
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    • 2010
  • In this study, the possibility of a quartz crystal micro-balance(QCM) modification of crystallization of L-Penicillamine and D-Penicillamine with a Vapor Diffused Molecular Assembly Technique and its application to the R-(-)-Mandelic acid and S-(+)- Mandelic acid measurement was investigated. The 3-dimensional structures of L-Penicillamine and D-Penicillamine on the surface of QCM were verified to be different from each other through QCM and AFM analyses. The D-Penicillamine modified QCM had specific recognition to the R-(-)-Mandelic acid, but L-Penicillamine modified QCM had no specificity to the R-(-)-Mandelic acid and S-(+)- Mandelic acid. From these results, it was known that the QCM could be modified with various selective meterials via VDMA, and the chiral isomer such as a Mandelic acid isomer could be detected by using a modified QCM.