Synthesis and Cyanide Ion Recognition of Water Soluble Receptors

合成了二酰基碳酰肼类化合物，并用紫外-可见光谱研究了它们在甲醇和甲醇/水中的阴离子结合性能。二酰碳肼衍生物通过分子内氢键稳定的阴离子受体加合物的可逆形成选择性地识别氰基阴离子。合成了含脂肪基团的碳肼类化合物，这些化合物对各种有机溶剂表现出良好的凝胶性。扫描电子显微镜研究表明，碳肼类化合物的自组装形成了纤维状或片状网络。基于VT-核磁共振和红外光谱的研究表明，凝胶材料是通过协同氢键和van der Waals自组装而成的。这些衍生物的有机凝胶在氰根阴离子的加入下变成了均相溶液。

Diacylcarbohydrazide derivatives were synthesized and their anion binding properties were investigated by using UV-vis spectroscopy in MeOH and MeOH/H_2O. Diacylcarbohydrazide derivatives selectively recognized cyanide anion through reversible formation of anion-receptor adducts that stabilized by intramolecular hydrogen bondings. The carbohydrazide derivatives bearing a aliphatic moieties were synthesized and the derivatives showed good gelation ability for various organic solvents. SEM study reveals that fiber-like or sheet-like network were gained from self-assmblingof carbohydrazide derivatives. Based on VT-NMR and IR spectral absorption investigations, the gel materials were generated from self-assembly by cooperative H-bonding and van der Waals. An organo gel of the derivatives became a homogeneous solution in response to the addition of cyanide anions.