Chin. J. Org. Chem. ›› 2018, Vol. 38 ›› Issue (7): 1792-1799.DOI: 10.6023/cjoc201712004 Previous Articles     Next Articles

Special Issue: 荧光探针-生物传感合辑 有机超分子化学合辑



曲文娟, 李文婷, 张海丽, 张有明, 林奇, 姚虹, 魏太保   

  1. 西北师范大学化学化工学院 生态环境相关高分子材料教育部重点实验室 甘肃省高分子材料重点实验室 兰州 730070
  • 收稿日期:2017-12-03 修回日期:2018-03-03 发布日期:2018-03-16
  • 通讯作者: 张有明, 魏太保;
  • 基金资助:


Rapid and Highly Sensitive Dual-Channel Detection of Cyanide in Aqueous Medium and the Applications in Food Samples

Qu Wenjuan, Li Wenting, Zhang Haili, Zhang Youming, Lin Qi, Yao Hong, Wei Taibao   

  1. Key Laboratory of Eco-Environment-Related Polymer Materials, Ministry of Education, Key Laboratory of Polymer Materials of Gansu Province, Northwest Normal University, Lanzhou 730070
  • Received:2017-12-03 Revised:2018-03-03 Published:2018-03-16
  • Contact: 10.6023/cjoc201712004;
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 21662031, 21661028, 21574104, 21262032).

It is well-known that cyanide anion (CN-) is a hypertoxic anion, which can cause adverse effects in both environment and living beings. Thus, it is highly desirable to develop strategies for detecting cyanide, especially in aqueous medium and food. However, due to the short half-life of free cyanide, long analysis time and interference from other competitive anions are general challenges for accurate monitoring of cyanide. Taking advantage of the special nucleophilicity of cyanide, a new colorimetric and fluorescent sensor (Q1-2) was synthesized based on naphtho[2,1-b]furan-2-carbonyl chloride and 2-aminobenzimidazole which designed by tuning the intramolecular hydrogen bonding to affect the π-conjugated efficiency. Upon the addition of cyanide anion, the probe displayed a red-shift in absorption spectra and the fluorescence decreased immediately with the detection limit of 8.0769×10-7 and 1.0510×10-9 mol/L, respectively. Other anions gave nearly no interference. Furthermore, Q1-2 was successfully applied to the naked eye identification for cyanide in the visible light and under the UV lamp in food samples and silica gel plates.

Key words: dual-channel detection, cyanide, food sample, silica gel plate