G-Quadruplex based hydrogels stabilized by a cationic polymer as an efficient adsorbent of picric acid
作者： Jin Zhang , Xiaoyang Li , Xiuping Sun , Yihan Liu , Jingcheng Hao
DOI: 10.1039/C9NJ03143J
关键词: Nuclear chemistry 、 Salt (chemistry) 、 Picric acid 、 Self-healing hydrogels 、 Phosphate 、 Cationic polymerization 、 Chemistry 、 Hydrogen bond 、 Guanosine 、 Adsorption
摘要: Hydrogels based on G-quadruplexes (G-hydrogels) were prepared using guanosine 5′-monophosphate disodium salt, GMP, with a hyperbranched poly(ethylenimine), PEI, containing abundant –NH2 groups. The cation–dipolar interaction between Na+ ions and GMP-quartets the hydrogen bonding phosphate groups of GMP PEI gave rise to hydrogels at an appropriate pH range 1.7–4.3. X-ray diffraction (XRD) measurements fluorescence enhancement Thioflavin T (ThT) indicated formation G-quadruplexes. G-hydrogel showed high adsorption capacity for contaminant, picric acid (PA), in water, ascribed its plentiful network structures.
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