Liu Yu-Chuan, Wang Chee-Chan
Departments of Chemical Engineering and Cosmetic Science, Vanung University, 1, Van Nung Road, Shuei-Wei Li, Chung-Li City, Taiwan.
J Phys Chem B. 2005 Mar 31;109(12):5779-82. doi: 10.1021/jp045313l.
In this work, polypyrrole (PPy) films were electrodeposited on electrochemically roughened gold substrates modified by argon plasma treatment. First, a gold substrate was roughened by a triangular-wave oxidation-reduction cycle (ORC) in an aqueous solution containing 0.1 N HCl. Then the roughened gold substrate was further treated by argon plasma. Encouragingly, the surface-enhanced Raman scattering (SERS) spectroscopy of polypyrrole electrodeposited on this roughened gold substrate modified by argon plasma treatment exhibits a higher intensity by 8-fold, as compared with the SERS of PPy electrodeposited on an unmodified roughened gold substrate. Meanwhile, the electropolymerization for pyrrole monomers occurring on the modified roughened gold substrate is easier. Also, the nucleation and growth of electropolymerization of pyrrole monomers on the modified and unmodified gold substrates are different.
在这项工作中，聚吡咯（PPy）薄膜电沉积在经过氩等离子体处理改性的电化学粗糙化金基底上。首先，在含有0.1 N HCl的水溶液中通过三角波氧化还原循环（ORC）使金基底粗糙化。然后对粗糙化的金基底进一步进行氩等离子体处理。令人鼓舞的是，与电沉积在未改性粗糙化金基底上的聚吡咯的表面增强拉曼散射（SERS）光谱相比，电沉积在经过氩等离子体处理改性的粗糙化金基底上的聚吡咯的SERS光谱强度提高了8倍。同时，在改性粗糙化金基底上吡咯单体的电聚合更容易。此外，吡咯单体在改性和未改性金基底上的电聚合的成核和生长情况不同。
