**4. Conclusions**

The main conclusions drawn from the present work are:


**Supplementary Materials:** The following are available online at www.mdpi.com/2079-6412/8/2/55/s1, Figure S1: AFM tapping mode images; Table S1: Roughness recorded for one sample of each surface.

**Acknowledgments:** This work is supported by Supported by the Marsden Fund Council and the Rutherford Discovery Fellowship from Government funding, managed by Royal Society Te Aparangi and The MacDiarmid ¯ Institute for Advanced Materials and Nanotechnology. Yiran An is acknowledged for his assistance with AFM imaging and Colin Doyle for help with XPS acquisition.

**Author Contributions:** Jenny Malmström conceived and designed the experiments. Marcelle Hecker and Matthew Sheng Hao Ting performed the experiments, Marcelle Hecker and Jenny Malmström analyzed the data; Marcelle Hecker and Jenny Malmström wrote the paper. All authors have read and approved the manuscript.

**Conflicts of Interest:** The authors declare no conflict of interest.
