Monolayer-Directed Electrodeposition of Oxide Thin Films: Surface Morphology versus Chemical Modification
| Autor: | Dinah M. Soolaman, Hua-Zhong Yu |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Materials science
Oxide Chemical modification Nanotechnology Substrate (electronics) Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound General Energy chemistry Microcontact printing Electrode Monolayer Physical and Theoretical Chemistry Thin film Deposition (law) |
| Zdroj: | The Journal of Physical Chemistry C. 111:14157-14164 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp071290+ |
| Popis: | In this paper we describe the general role that surface morphology and chemical nature play in guiding the cathodic deposition of oxide thin films onto electrode surfaces. By use of a “featureless” stamp for microcontact printing (μCP), the pregrooved microfeatures (“mountains” and “valleys” representing the track trails) of recordable compact disc (CD-R) gold substrates can be selectively modified with OH- or CH3-terminated self-assembled monolayers (SAMs). For comparison, “flat” gold substrates were patterned with the above SAMs in parallel “microstrips” that are analogous to the CD-R substrate (but no height differences). Electrochemical deposition of zirconia thin films showed that, on the CD-R substrates, surface morphology (height difference) dominates over the blocking effects of the SAMs; that is, deposition occurred primarily on the mountains despite these sites being modified with organic monolayers. For flat gold substrates it was found that n-alkanethiolate SAMs block deposition in modified ar... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|