Chemical modification of an alkanethiol self-assembled layer to prevent corrosion of copper

Journal Article · Tue Apr 01 04:00:00 EST 1997 · Journal of the Electrochemical Society

DOI:https://doi.org/10.1149/1.1837575· OSTI ID:509376

Haneda, Reiko; Nishihara, Hiroshi; Aramaki, Kunitsugu ^[1]

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1. Keio Univ., Kohoku, Yokohama (Japan)

A protective film consisting of an ultrathin, closely packed, and highly water-repellent two-dimensional polymer monolayer was prepared by modification of an 11-mercapto-1-undecanol (MUO) self-assembled monolayer adsorbed on copper with 1,2-bis(trichlorosilyl)ethane (BTCSE) and subsequently with octadecyltrichlorosilane (C{sub 18}TCS). In order to provide regularly arranged C{sub 18} alkyl chains and two-dimensional cross-linkages within the layer, the BTCSE-modified MUO monolayer was treated with C{sub 18}TCS at low concentrations for many hours. The protective efficiency of the MUO monolayer modified with BTCSE and with 5 {times} 10{sup {minus}4} M C{sub 18}TCS for 24 h for copper corrosion in an aerated 0.5 M Na{sub 2}SO{sub 4} was markedly high, 98.9%. The doubly modified layer was significantly water-repellent and highly protective against atmospheric corrosion of copper.

• Sponsoring Organization: USDOE
• OSTI ID: 509376
• Journal Information: Journal of the Electrochemical Society, Journal Name: Journal of the Electrochemical Society Journal Issue: 4 Vol. 144; ISSN 0013-4651; ISSN JESOAN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER
CORROSION INHIBITORS
CORROSION PROTECTION
MATERIALS TESTING
PROTECTIVE COATINGS
THIOLS
WEATHERING