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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 10
BKCSDE 25(10)
October 20, 2004

Title	Synthesis of Thiol-Functionalized Ionic Liquids and Formation of Self-Assembled Monolayer on Gold Surfaces: Effects of Alkyl Group and Anion on the Surface Wettability
Author	Bang Sook Lee, Sang-gi Lee*
Keywords	Thiol-functionalized ionic liquids, Self-assembled monolayer, Surface wettability, Anion effect
Abstract	Twenty four thiol-functionalized ionic liquids based on imidazolium cation, 1-(12-mercaptododecyl)-3-alkylimidazolium salts, have been synthesized, and utilized to investigate the effects of alkyl-chain length and anion on the wettability of Au surfaces on the basis of self-assembled monolayers presenting [(CnSAMIM)X], where n = 1-6, X = Br, BF4, PF4 and NTf2. Water wettabilities of the surfaces were measured as a water contact angle by contact angle goniometry. It was found that water wettability of the Au surfaces coated with imidazolium ions was largely dependent not only on counter anions but also on the length of alkyl chains. In the case of SAMs of N-alkylimidazolium ions having short length of N-alkyl chain (C1-C4), anions played great role in determining water wettability of the surfaces.
Page	1531 - 1537
Full Text	PDF

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