| Abstract
| - This paper reports on the fabrication of self-assembled monolayers containing disulfide-functionalizeddiacetylenes. To this purpose, two diacetylene derivatives were synthesized: the novel 14-(9H-9-carbazolyl)tetradeca-10,12-diyn-1-yl disulfide (CDS9) and the henicosa-10,12-diyn-1-yl disulfide (DS9). Both monomerswere employed to prepare two-dimensional self-assembled monolayers (2D-SAMs) by chemisorption on gold-sputtered platforms and three-dimensional self-assembled monolayers (3D-SAMs) on gold nanoclusters bydirect synthesis in organic solvent. The chemisorbed diacetylenes were then converted to the polymeric formby exposure to UV radiation, and their morphological and spectroscopic properties investigated by severaltechniques. From SERS data it was inferred that both monomers show the same behavior, in that the highlyconjugated blue phase was observed in the 3D-SAMs, while only the less extended red conformation wasfound in the corresponding 2D-SAMs.
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