SDS of cas: 510758-28-8In 2021 ,《Local Cross-Coupling Activity of Azide-Hexa(ethylene glycol)-Terminated Self-Assembled Monolayers Investigated by Atomic Force Microscopy》 was published in Langmuir. The article was written by Lebitania, Julie Ann; Inada, Natsumi; Morimoto, Masayuki; You, Jiaxun; Shahiduzzaman, Md.; Taima, Tetsuya; Hirata, Kaito; Fukuma, Takeshi; Ohta, Akio; Asakawa, Tsuyoshi; Asakawa, Hitoshi. The article contains the following contents:
Azide-oligo(ethylene glycol)-terminated self-assembled monolayers (N3-OEG-SAMs) are promising interfacial structures for surface functionalization. Its many potential applications include chem./bio-sensing and construction of surface models owing to its cross-coupling activity that originates from the azide group and oligo(ethylene glycol) (OEG) units for non-specific adsorption resistance. However, there are only a few studies and limited information, particularly on the mol.-scale structures and local cross-coupling activities of N3-OEG-SAMs, which are vital to understanding its surface properties and interfacial mol. design. In this study, mol.-scale surface structures and cross-coupling activity of azide-hexa(ethylene glycol)-terminated SAMs (N3-EG6-SAMs) were investigated using frequency modulation at. force microscopy (FM-AFM) in liquid The N3-EG6-SAMs were prepared on Au(111) substrates through the self-assembly of 11-azido-hexa(ethylene glycol)-undecane-1-thiol (N3-EG6-C11-HS) mols. obtained from a liquid phase. Subnanometer-resolution surface structures were visualized in an aqueous solution using a laboratory-built FM-AFM instrument. The results show a well-ordered mol. arrangement in the N3-EG6-SAM and its clean surfaces originating from the adsorption resistance property of the terminal EG6 units. Surface functionalization by the cross-coupling reaction of copper(I)-catalyzed azide-alkyne cycloaddition was observed, indicating a structural change in the form of fluctuating structures and island-shaped structures depending on the concentration of the alkyne mols. The FM-AFM imaging enabled to provide information on the relationship between the surface structures and cross-coupling activity. These findings provide mol.-scale information on the functionalization of the N3-EG6-SAMs, which is helpful for the interfacial mol. design based on alkanethiol SAMs in many applications. The results came from multiple reactions, including the reaction of Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8SDS of cas: 510758-28-8)
Tris((1-benzyl-1H-1,2,3-triazol-4-yl)methyl)amine(cas: 510758-28-8) is a polytriazolylamine ligand which stabilizes Cu(I) towards disproportionation and oxidation thus enhancing its catalytic effect in the azide-acetylene cycloaddition.SDS of cas: 510758-28-8
Referemce:
1,2,3-Triazole – Wikipedia,
Triazoles – an overview | ScienceDirect Topics