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- Title
Reversible Oxygenation of 2,4-Diaminobutanoic Acid-Co(II) Complexes.
- Authors
Cheng, Xiang; Huang, Yan; Li, Hui; Yue, Fan; Wen, Hongmei; Wang, Jide
- Abstract
This paper introduces the structural characterization and studies on reversible oxygenation behavior of a new oxygen carrier Co(II)-2,4-diaminobutanoic acid (DABA) complex in aqueous solution. The composition of the oxygenated complex was determined by gas volumetric method, molar ratio method, and mass spectrometry, and the formula of the oxygenated complex was determined to be [Co(DABA)2O2]. In aqueous solution, the complex can continuously uptake and release dioxygen and exhibit excellent reversibility of oxygenation and deoxygenation ability. This complex can maintain 50% of its original oxygenation capacity after 30 cycles in 24 h and retain 5% of the original oxygenation capacity after more than 260 cycles after 72 h. When a ligand analogue was linked to histidine (His), the new complex exhibited as excellent reversible oxygenation property as His-Co(II) complex. Insight into the relationship between structural detail and oxygenation properties will provide valuable suggestion for a new family of oxygen carriers.
- Subjects
OXYGENATION (Chemistry); OXYGEN carriers; AQUEOUS solutions; MASS spectrometry; DIOXYGENASES; HISTIDINE
- Publication
Bioinorganic Chemistry & Applications, 2016, p1
- ISSN
1565-3633
- Publication type
Article
- DOI
10.1155/2016/8296365