Abstract
This work details the formation of organic monolayers on Si(111) by electrochemical methods. We show that grafting of phenyl groups is possible by reduction of +N 2–Ar–X cations where the substituent X may be Br, NO 2, COOH, CN, C n H 2 n+1 ( n=1, 4, 12). Characterizations show that the electrochemical process is self stopped after completion of the first monolayer whose structure is (2×1) close packed in the case X=Br and CH 3 as observed by STM. The stability and passivating properties of films are also investigated.
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