β-Cyclodextrin(β-CD)-containing acrylic monomers were synthesized by using dicyclohexylcarbodiimide(DCC)as catalyst.Synthesis and characterization of using different reaction conditions,and the different mole cular ...β-Cyclodextrin(β-CD)-containing acrylic monomers were synthesized by using dicyclohexylcarbodiimide(DCC)as catalyst.Synthesis and characterization of using different reaction conditions,and the different mole cular structure with different substitution degree of β-CD-containing acrylic monomers were synthesized.Two kinds of β-CD-containing acrylic monomers,β-CD-3-A and β-CD-6-A carrying the same vinyl,were prepared reying on their reactivity of different hydroxyl groups in β-CD.Nuclear magnetic resonance(13C NMR)data indicated that,for β-CD-3-A,acylation occurs at C-2 and C-3 position of β-CD,and for β-CD-6-A,the acylation occurs at its C-2 and C-6 position,respectively.Moreover,the mono-[6-(2-acryloylaminoethyl)amino]-6-β-CD was obtained using acrylic acid as a raw material under the DCC catalyst.Its structure was confirmed by elemental analysis,1H NMR and IR.展开更多
The molecular interaction of inclusion complex between βcyclodextrin(βCD)and nicotine in aqueous solutions was studied by UVVis spectrophotometric and proton nuclear magnetic resonance(1HNMR)spectrosco...The molecular interaction of inclusion complex between βcyclodextrin(βCD)and nicotine in aqueous solutions was studied by UVVis spectrophotometric and proton nuclear magnetic resonance(1HNMR)spectroscopy.It was found that the inclusion complex between βCD and nicotine can also be formed in alkaline aqueous solutions at pH=105.The result can be further proved by a competitive inclusion process using phenolphthalein as a probe.A solid with supermolecular structure of βCD/nicotine was prepared,and its powder Xray diffraction data indicated that the crystalline structure of inclusion complex is different from the original βCD crystalline structure.The result of differential scanning calorimetry(DSC)can also confirm this conclusion.展开更多
文摘β-Cyclodextrin(β-CD)-containing acrylic monomers were synthesized by using dicyclohexylcarbodiimide(DCC)as catalyst.Synthesis and characterization of using different reaction conditions,and the different mole cular structure with different substitution degree of β-CD-containing acrylic monomers were synthesized.Two kinds of β-CD-containing acrylic monomers,β-CD-3-A and β-CD-6-A carrying the same vinyl,were prepared reying on their reactivity of different hydroxyl groups in β-CD.Nuclear magnetic resonance(13C NMR)data indicated that,for β-CD-3-A,acylation occurs at C-2 and C-3 position of β-CD,and for β-CD-6-A,the acylation occurs at its C-2 and C-6 position,respectively.Moreover,the mono-[6-(2-acryloylaminoethyl)amino]-6-β-CD was obtained using acrylic acid as a raw material under the DCC catalyst.Its structure was confirmed by elemental analysis,1H NMR and IR.
文摘The molecular interaction of inclusion complex between βcyclodextrin(βCD)and nicotine in aqueous solutions was studied by UVVis spectrophotometric and proton nuclear magnetic resonance(1HNMR)spectroscopy.It was found that the inclusion complex between βCD and nicotine can also be formed in alkaline aqueous solutions at pH=105.The result can be further proved by a competitive inclusion process using phenolphthalein as a probe.A solid with supermolecular structure of βCD/nicotine was prepared,and its powder Xray diffraction data indicated that the crystalline structure of inclusion complex is different from the original βCD crystalline structure.The result of differential scanning calorimetry(DSC)can also confirm this conclusion.
