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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 22, Number 3
BKCSDE 22(3)
March 20, 2001 
 
Title
 Electrochemical Properties of Electroactive Monolayers Having [Os(bpy)3]2+ Moieties
Author
 Gyeong Sook Bang, Il Cheol Jeon
Keywords
 SAM, [Os(bpy)3]2+, Alkanethiol, EQCM, Hydration number.
Abstract
 Self-assembled monolayers (SAMs) of the alkylthiols with [Os(bpy)3]2+ moiety at the terminal position were prepared on gold electrode surface. Examination of the cyclic voltammograms for the SAM shows that it does not organize well unlike alkylthiols, which is attributed to the much larger diameter of [Os(bpy)3]2+ moiety compared with the cross-section of alkyl chains and the distance between the adsorption sites. Electromicrogravimetry study shows that the hydration numbers of the electrolyte were 16 ±2, 11 ±1, 5 ± 1 and 24 ±6 for ClO4- , PF6-, NO3- , and SO42- , respectively. The binary SAMs of alkylthiols with [Os(bpy)3]2+ terminal-group were prepared by co-adsorption of alkylthiols as spacer molecules, which results in better packing in SAM and accordingly the stability was enhanced.
Page
 281 - 287
Full Text
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