Related Experiment Video
Updated: Jun 3, 2026

Synthesis and Characterization of 1,2-Dithiolane Modified Self-Assembling Peptides
Published on: August 20, 2018
Preparation and characterization of an ordered 1-dodecanethiol monolayer on bare Si(111) surface
Jie Ling Lou1, Hung Wei Shiu, Lo Yueh Chang
1National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan.
Abstract:
We have grown 1-dodecandthiol (DDT) monolayer on a bare Si(111) surface through ultraviolet-assisted photochemical reaction. The resulting monolayer was investigated by means of water contact angle measurement, synchrotron radiation-based high-resolution X-ray photoelectron spectroscopy, and polarization-dependent near-edge X-ray absorption fine structure spectroscopy. These combined probes for characterization reveal a hydrophobic ambient surface; the DDT was directly attached to Si through a Si-S bond, and the molecules formed an ordered monolayer with an average tilt angle of 57° of the alkyl chains relative to the substrate surface.
Related Concept Videos
Preparation and Reactions of Sulfides
Preparation and Reactions of Thiols

