期刊
APPLIED SURFACE SCIENCE
卷 280, 期 -, 页码 783-790出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2013.05.062
关键词
Quartz crystal microgravimetry; QCM; Electrochemistry; Poly-L-lysine; Platinum electrode; Film growth
类别
资金
- Swedish Research Council (Vetenskapsradet) [325-2008-7537, 621-2007-3983]
- Bo Liedberg and the Molecular Physics Group at Linkoping University for access to equipment
- Carl Trygger Foundation and The Swedish Foundation for Strategic Research
Coating hard materials such as Pt with soft polymers like poly-l-lysine is a well-established technique for increasing electrode biocompatibility. We have combined quartz crystal microgravimetry with dissipation with electrochemistry (EQCM-D) to study the deposition of PLL onto Pt electrodes under anodic potentials. Our results confirm the change in film growth over time previously reported by others. However, the dissipation data suggest that, after the short initial phase of the process, the rigidity of the film increases with time, rather than decreasing, as previously proposed. In addition to these results, we discuss how gas evolution from water electrolysis and Pt etching in electrolytes containing Cl- affect EQCM-D measurements, how to recognize these effects, and how to reduce them. Despite the challenges of using Pt as an anode in this system, we demonstrate that the various electrochemical processes can be understood and that PLL coatings can be successfully electrodeposited. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据