Electro-Assisted Deposition of Calcium Phosphate on Self-Assembled Monolayers

Noah Metoki, Kazi Sadman, Kenneth Shull, Noam Eliaz, Daniel Mandler*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Calcium phosphate (CaP) ceramics are used in orthopedics and dentistry due to their excellent biocompatibility and osseointegration. Here, the electro-assisted deposition of CaP on two different self-assembled monolayers (SAMs), 2-mercaptoacetic acid (MAA) and 2-mercaptoethanol (ME), was studied both at short (up to 3 min) and long (2 hours) deposition periods on well-defined evaporated gold surfaces. It was found that the end group of the monolayer has a major effect on the growth of the CaP coating. The deposition was slower and less electrically efficient on MAA SAM, but surface cracking was essentially eliminated due to reduction of the crystallographic mismatch. The carboxylic acid may facilitate CaP growth by attracting Ca2+ ions to the surface, which could explain the higher amount of side reactions occurring at the beginning of the deposition.

Original languageEnglish (US)
Pages (from-to)400-408
Number of pages9
JournalElectrochimica Acta
Volume206
DOIs
StatePublished - Jul 10 2016

Keywords

  • Calcium phosphate (CaP)
  • electrodeposition
  • hydroxyapatite (HAp)
  • self- assembled monolayers (SAMs)

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

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