title: Research on the structure-surface adsorptive activity relationships of triazolyl glycolipid derivatives for mild steel in HCl.
abstract: Triazolyl glycolipid derivatives constructed via Cu(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition reaction (Cue-AAC) represent a new range of carbohydrate-based scaffolds for use in many fields of the chemical research. Here the surface adsorptive ability of series of our previously prepared C1- or C6-triazole linked gluco- and galactolipid derivatives for mild steel in 1 M HCl was studied via electrochemical impedance spectroscopy (EIS). Results indicated that these monosaccharide-fatty acid conjugates are weak inhibitors against HCl corrosion for mild steel. Moreover, some newly synthesized triazolyl disaccharide (maltose)-fatty alcohol conjugates failed to display enhanced activity, meaning that the structural enlargement of the sugar moiety does not favor the iron surface adsorption. However, a bis-triazolyl glycolipid derivative, which was realized by introducing a benzenesulfonamide group via Cue-AAC to the C6-position of a C1-triazolyl glucolipid analog, eventually showed significantly improved adsorptive potency compared to that of its former counterparts. The corrosion inhibitive modality of this compound for mild steel in HCl was subsequently studied via potentiodynamic polarization and thermodynamic calculations.
authors.affiliation: Key Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China.
authors.forename: Hai-Lin
authors.initials: HL
authors.lastname: Zhang
authors.forename: Xiao-Peng
authors.initials: XP
authors.lastname: He
authors.forename: Qiong
authors.initials: Q
authors.lastname: Deng
authors.forename: Yi-Tao
authors.initials: YT
authors.lastname: Long
authors.forename: Guo-Rong
authors.initials: GR
authors.lastname: Chen
authors.forename: Kaixian
authors.initials: K
authors.lastname: Chen
mesh_terms: D000327:Adsorption; D002384:Catalysis; D003300:Copper / Q000737:chemistry; D003500:Cyclization; D006017:Glycolipids / Q000138:chemical synthesis / Q000737:chemistry*; D006851:Hydrochloric Acid / Q000737:chemistry*; D015394:Molecular Structure; D013232:Steel / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D006017:Glycolipids; D013232:Steel; D003300:Copper; D006851:Hydrochloric Acid