论文部分内容阅读
含有水溶性季铵盐基团的4-正己氨基-1,8-萘酰亚胺化合物在水中与葫芦脲[6]通过疏水及氢键作用形成准轮烷结构,而且体系荧光波长红移了17nm,荧光强度降低32%.研究表明,往准轮烷溶液中加入与葫芦脲[6]具有强结合力的Ba2+离子会使准轮烷结构离解,体系荧光恢复;而再往溶液中加入SO42-,Ba2+以BaSO4沉淀的形式被除去,这时准轮烷又重新生成.核磁氢谱、紫外-可见吸收光谱、荧光光谱和荧光寿命对体系的结合/离解过程的研究表明这种结合/离解过程是可逆的.本体系可以模拟插头/插座的连接和断开动作.
The 4-n-hexylamino-1,8-naphthalimide compound containing a water-soluble quaternary ammonium salt group forms a quasironane structure with cucurbituril [6] through hydrophobic and hydrogen bonding in water, and the fluorescence wavelength of the system is red shifted 17nm, the fluorescence intensity decreased by 32% .Research shows that the addition of Ba2 + ions with strong binding force to cucurbit [6] in quasi-rotaxane solution will dissociate the pseudorotaxane structure and restore the fluorescence of the system; and then add SO42 -, Ba2 + was precipitated as BaSO4, and then the pseudoturbane was regenerated.Studies on the binding / dissociation processes of the system by 1H NMR, UV-Vis absorption spectra, fluorescence spectra and fluorescence lifetime show that this binding / dissociation The process is reversible. The system simulates the plug / socket connection and disconnection.