Grabchev Ivo, Staneva Desislava, Bojinov Vladimir, Betcheva Rosica, Gregoriou Vasilis
Institute of Polymers, Bulgarian Academy of Sciences, 1113 Sofia, Bulgaria.
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Aug;70(3):532-6. doi: 10.1016/j.saa.2007.07.057. Epub 2007 Aug 14.
The investigations aim at revealing the ability of a 1,8-napthalimide-modified poly(amidoamine) dendrimer from second generation to respond to the presence of cuprum cations and protons in the environment. It has been established that a single Cu(2+) cation present in the dendrimer molecule is capable of quenching more than 78% of its fluorescence what is an indication of high sensitiveness. An enhancement of the fluorescence emission of the dendrimer has been observed in acidic medium. It has been established that the processes of coordinating the ions in different sites of the dendrimer are reversible.
这些研究旨在揭示第二代1,8-萘二甲酰亚胺修饰的聚（酰胺胺）树枝状大分子对环境中铜离子和质子存在的响应能力。已经确定，树枝状大分子分子中存在的单个Cu(2+)阳离子能够淬灭其超过78%的荧光，这表明其具有高灵敏度。在酸性介质中观察到树枝状大分子的荧光发射增强。已经确定，树枝状大分子不同位点上离子的配位过程是可逆的。
