摘要
以N-乙基咔唑-3-甲醛与丙二腈为原料,经Knoevenagel反应合成了一种可选择性识别N2H4的二氰乙烯基咔唑类(DVC)荧光探针。通过核磁共振波谱、红外光谱和高分辨质谱对其结构进行了表征。通过紫外-可见吸收光谱和荧光发射光谱研究了探针对N2H4的检测能力。实验结果表明:与N2H4作用前后,探针溶液的颜色和荧光出现明显的变化,408 nm处吸收强度和425 nm处的荧光强度与N2H4浓度的负对数呈现较好的线性回归关系。探针DVC对N2H4具有较强的定量分析能力,通过物理吸附制备的试纸也可用于N2H4蒸气浓度的分析。
Using N-ethylcarbazole-3-carboxaldehyde and malononitrile as raw materials,a dicyanovinylcarbazole-based fluorescent probe(DVC)that can selectively recognize hydrazine was synthesized based on Knoevenagel reaction.The structure of DVC was confirmed by 1HNMR,13CNMR,IR,and HR-MS.The detection ability of the probe for N2H4 was investigated by UV-visible absorption spectroscopy and fluorescence emission spectroscopy.The color and fluorescence of the probe solution changed significantly after reacting with N2H4.There was a good linear relationship between the fluorescence intensity at 425 nm and the absorption intensity at 408 nm with the negative logarithm of N2H4 concentration.The probe DVC has a strong ability to quantitatively analyze N2H4.The test paper prepared by physical adsorption can also be used for the quickly analysis of N2H4 concentration.
作者
陈晓彤
杨杨
芦宝华
李久明
徐宁
CHEN Xiao-tong;YANG Yang;LU Bao-hua;LI Jiu-ming;XU Ning(College of Chemistry and Material Science,Inner Mongolia University for Nationalities,Tongliao 028000,China;Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis,Tongliao 028000,China;Key Laboratory for Castor Breeding of Inner Mongolia,Tongliao 028000,China)
出处
《化学试剂》
CAS
北大核心
2020年第8期987-991,共5页
Chemical Reagents
基金
内蒙古自治区自然科学基金面上项目(2019MS02004)
内蒙古自治区高等学校科学研究项目(NJZZ19146)
内蒙古自治区天然产物化学及功能分子合成重点实验室开放课题项目(MDK2017051)
内蒙古自治区高校蓖麻产业工程技术研究中心开放基金项目(MNK2016001)
内蒙古民族大学研究生科研创新资助项目(NMDSS1934)。
关键词
二氰乙烯基咔唑
合成
荧光探针
N2H4
吸收光谱
dicyanovinylcarbazole
synthesis
fluorescent probe
hydrazine
absorption spectra
