Synthesis and Characterization of an Aminated D-Glucose and its Stability of Cu²⁺Complex

Abstract:

An aminated D-glucose [N,N'-di-b-D-glucopyranosyl ethylenediamine] was prepared and thoroughly characterized by FT-IR, ESI-MS, NMR spectra and elemental analysis. Compared with D-glucose, the FT-IR spectrum of the aminated glucose showed a moderate peak at 1629~1608 cm^-1 which was attributed to dNH vibration, suggesting glucose reacted to ethylenediamine (en). The ESI-MS spectrum exhibited a strong peak at m/z 383.2, which was assigned to the species [C₁₄H₂₇O₁₀N₂]^-. The ¹H-NMR spectrum of the aminated D-glucose demonstrated the signal of the C₁ proton and the amino proton at 4.82~4.79ppm, illustrating the amino of ethylenediamine was substituted for the hydroxy group of C₁. As for UV spectra, the aminated glucose hadn’t absorbance in the ultraviolet region while its complex with Cu²⁺ had obvious absorption peak at about 236nm. The complex ratio of the aminated glucose to Cu²⁺ was close to 1:1 and the stability constant of its Cu²⁺ complex was 6.8*10⁷ in 0.01mol×L^-1 borax buffer solution.

• Periodical: Advanced Materials Research (Volumes 197-198)
• Pages: 65-68
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.197-198.65
• Online since: February 2011
• Authors: Qiang Qiang Liao, Yi Jiu Li, Bo Xiang
• Keywords: Complex, Copper Ion, D-Glucose, Ethylenediamine

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