Article ID Journal Published Year Pages File Type
1670869 Thin Solid Films 2008 6 Pages PDF
Abstract

Self-assembled monolayers (SAMs) of azobenzene-derivatived alkanethiol, 5-[2-methyl-4-(4-octyl-phenylazo)-phenoxy]-pentane-1-thiol (8AM5SH), were prepared on flat Au substrates and Au nanoparticles. The photoisomerization from trans-8AM5SH to cis-8AM5SH was 22% for flat Au substrates and 60% for Au nanoparticles. Further Au nanoparticles capped with cis-8AM5SH were found to disperse in a mixed solvent of chloroform and ethanol (CHCl3:ethanol = 1:3), whereas those capped with trans-8AM5SH coagulated in the solvent. However, the Au nanoparticles dispersed in chloroform, regardless of whether 8AM5SH was in the trans or cis conformation.

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Physical Sciences and Engineering Materials Science Nanotechnology
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