CAJ | 학술논문

设计并合成了1,8-二(2-吡咯酰胺)-3,6-二氯咔唑化合物(1), 利用X射线单晶衍射研究了该化合物的固态结构. 利用荧光和紫外-可见光谱技术及 1H NMR滴定法研究了其对阴离子的识别. 研究结果表明, 化合物1对H_2PO~-_4离子有较强的识别能力, 且对H_2PO~-_4离子有明显的荧光增强效应, 可用来识别H_2PO~-_4离子. 同时~1H NMR滴定结果显示, 化合物1在阴离子识别过程中发生了构型转化.
설계병합성료1,8-이(2-필각선알)-3,6-이록잡서화합물(1), 이용X사선단정연사연구료해화합물적고태결구. 이용형광화자외-가견광보기술급 1H NMR적정법연구료기대음리자적식별. 연구결과표명, 화합물1대H_2PO~-_4리자유교강적식별능력, 차대H_2PO~-_4리자유명현적형광증강효응, 가용래식별H_2PO~-_4리자. 동시~1H NMR적정결과현시, 화합물1재음리자식별과정중발생료구형전화.
Due to the fundamental roles that anions play in a wide range of chemical and biological processes, numerous efforts have been devoted to the design of receptors capable of selectively binding and sensing anions. Herein, carbazole derivative (1) bearing two model amides was synthesized by coupling 1,8-diamino-3 ,6-dichlorocarbazole with pyrrole-2-carbonylchloride in the presence of triethylamine. The structure of compound 1 was characterized by X-ray crystallography. The anions recognition of the compound 1 was studied by the UV-Vis and fluorescent spectra method in highly polar solvent of DMSO. The results show that strong anion binding is observed for H_2PO_4~-. Obvious fluorescence "switched on" behavior is observed upon addition of H_2PO_4~- to receptor 1, which can be used to discriminate H_2PO_4~- from the other anions. 'H NMR analysis revealed that all the five NH of receptor 1 were involved in the hydrogen bonding interactions with the anions leading to a conformation exchange during the anion binding.