一种基于联二萘酚衍生物的荧光传感器对铜离子的荧光识别

设计并合成了一种基于联二萘酚衍生物的荧光传感器1,1在乙腈溶液中对Cu^(2+)具有很好的选择性和灵敏度。当所加金属离子的浓度为1的10倍的时候,只有Cu^(2+)能显著猝灭1的荧光,而其它离子(Hg^(2+),Pb^(2+),Sr^(2+),Ba^(2+),Cd^(2+),Ni^(2+),Co^(2+),Fe^(2+),Mn^(2+),Zn^(2+),Ce^(3+),Mg^(2+),K^+,Fe^(3+),Cr^(3+),Na^+)仅能引起1的荧光发射强度略微下降。结合比实验证明1与Cu^(2+)是以1:2的方式结合,通过Benesi-Hildebrand方程计算得出其表观结合常数为4.09×10^(10)M^(-2)。

Binol Based Chirality Conversion Reagents for Underivatized Amino Acids

Four binol based pyrrole carboxamide chiral receptors has been synthesized and effectively used as a Chirality Conversion Reagent (CCR) for underivatized amino acids. Three points of interactions take place for the conversion process. They are the reversible imine formation, the internal resonance assisted Hydrogen Bonding (RAHB) and the additional hydrogen bonds between the amino acids and the heterocylic moiety of the pendant groups. The conversion efficiency of all the receptors was found to be comparable with those of the receptors reported earlier.

A Novel Dimeric BINOL for Enantioselective Recognition of 1,2-Amino Alcohols

A novel auxillary chiral dimeric binol has been designed,synthesized,and used to enantioselectively recognize 1,2-amino alcohols through the three point of interactions,the reversible imine bond,resonance assisted hydrogen bonding and the hydrogen bonding by the additional chiral moiety introduced at the receptor.The enantioselectivities were comparable to those of the previous reported receptors.