Preparation and evaluation of two-dimensional polymer films by chemical modification of an alkanethiol self-assembled monolayer for protection of copper against corrosion

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.2048401· OSTI ID:153691

Itoh, Miki; Nishihara, Hiroshi; Aramaki, Kunitsugu ^[1]

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1. Keio Univ., Yokohama (Japan). Dept. of Chemistry

Chemical modification of an 11-mercapto-1-undecanol (MUO) self-assembled monolayer chemisorbed on the copper surface with alkyltrichlorosilanes (C{sub n}TCS) has improved the protective ability of the monolayers against corrosion of copper in aqueous and atmospheric environments. In this study, further improvements of the ability were investigated by modification of the MUO self-assembled layer adsorbed on copper with tetrachlorosilane (TCS) and 1,2-bis(trichlorosilyl)ethane (BTCSE) for constructing a two-dimensional polymer structure in the assembly layer on the surface. The TCS or BTCSE-modified MUO monolayer was further treated with coupling agents like octyldimethylchlorosilane, octamethyldichlorosilane, and octyltrichlorosilane. The modified monolayers were characterized by Fourier transform infrared reflection spectroscopy and contact angle measurements. Although the protective abilities of the modified layers against the cathodic reaction of copper corrosion in aerated 0.5 M Na{sub 2}SO{sub 4} were not necessarily increased remarkably from those of the C{sub n}TCS-modified MUO monolayers, network structures arising from two-dimensional polymerization with lateral siloxane linkages between molecules adsorbed on copper resulted in enhancement of the protective ability against the anodic process.

• Sponsoring Organization: USDOE
• OSTI ID: 153691
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 11 Vol. 142; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALCOHOLS
CHEMICAL PREPARATION
CHEMISORPTION
CHLORINE COMPOUNDS
COPPER
CORROSION INHIBITORS
CORROSION PROTECTION
ORGANIC POLYMERS
PERFORMANCE
PROTECTIVE COATINGS
SILANES
THIOLS