摘要
Functionalization of shape-persistent aromatic oligoamides still represents a difficult task nowadays. A crescent aromatic oligothioamide was synthesized by simple thionation of the corresponding oligoamide with the Lawesson＇s reagent. The results from UV-vis spectra of the molecule upon metal ion complexation demonstrated its higher selectivity in recognizing Cu2~ ions compared to the oligoamide precursor. The stoichiometry of the complex formed between the thioamide and Cu2＋ was found to be 1：1 with a binding constant of （4.3 ± 0.9） × 104 mol/L.
Functionalization of shape-persistent aromatic oligoamides still represents a difficult task nowadays. A crescent aromatic oligothioamide was synthesized by simple thionation of the corresponding oligoamide with the Lawesson＇s reagent. The results from UV-vis spectra of the molecule upon metal ion complexation demonstrated its higher selectivity in recognizing Cu2~ ions compared to the oligoamide precursor. The stoichiometry of the complex formed between the thioamide and Cu2＋ was found to be 1：1 with a binding constant of （4.3 ± 0.9） × 104 mol/L.
基金
supported by the National Natural Science Foundation(No.21172158)
NSAF(No.11076018)
Sichuan Province Science and Technology Support Programme(No.2011FZ0048)
the National Fund of China for Fostering Talents in Basic Science(No.J1210004)
Open Project of Key Laboratory for Radiation Physics and Technology of Ministry of Education(No.2010-08)
