摘要
合成了2个N-硝基苯基吡咯酰胺阴离子识别主体.通过X射线单晶衍射确定了间位硝基取代物的结构,氢键及π-π相互作用在该化合物的组装过程中起到了决定性的作用.利用UV-V is光谱研究了这两个主体对常见无机阴离子的识别,结果表明,它们不仅对F-和H2PO4-离子有比较强的识别能力,而且在识别发生时还伴随着显著的颜色变化,因此这两个化合物都可作为阴离子的比色传感器.
Molecular recognition of anion is currently an expanding area of research especially in the context of designing anion sensors. Herein, two nitrophenyl pyrrolic amide receptors, p-nitrophenyl-lH-pyrrole-2-carboxamide（1 ） and m-nitrophenyl-lH-pyrrole-2-carboxamide （2）, were synthesized by coupling pyrrole-2-carboxylic acid with nitroaniline in the presence of dicyclohexylcarbodiimide （DCC）. The structure of compound 2 was characterized by X-ray crystallography. It is revealed that hydrogen bonding interaction and π-π stacking played an important role in the self-assembly of compound 2. The anions recognition of the two compounds were studied by the UV-Vis method in highly polar solvent of DMSO. Both compounds show a significant color change when F^- and H2PO4^- were added indicating they would be new colorimetric sensors for the two anions.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第5期871-874,共4页
Chemical Journal of Chinese Universities
基金
国家重点基础发展规划项目(批准号:G2000078100)
国家自然科学基金(批准号:200720207)资助
关键词
硝基吡咯酰胺
晶体结构
阴离子识别
N-Nitrophenyl-lH-pyrrole-2-carboxamide
Crystal structure
Anions recognition
