A 𝛼-cyanostilbene-modified Schiff base as efficient turn-on fluorescent chemosensor for Zn2+

Journal of Chemical Sciences

Aixiang Ding¹  Fang Tang¹  Tao Wang¹  Jiaxiang Yang1 2¹  Xutang Tao² 

[1] Department of Chemistry, Key Laboratory of Functional Inorganic Materials of Anhui Province, Anhui University, Hefei 230039, P. R. China$$;State Key Laboratory of Crystal Materials, Shandong University, Jinan, Shandong 250100, P. R. China$$

关键词: Fluorescence sensor;    Schiff base;    𝛼-cyanostilbene;    chelation-enhanced fluorescence effect;    zinc ion.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

A novel Schiff base derivative (Z)-3-(4-(hexyloxy)phenyl)-2-(4-((E)-2-hydroxybenzylidene amino)phenyl)acrylonitrile (L) was designed, synthesized and characterized. L was used as a Zn2+ selective, turn-on, fluorescent chemosensor with a detection limit of 0.1𝜇M in DMF. 1:1 stoichiometric complex formation of L wih Zn2+ was confirmed through fluorescent titration experiments and Job’s plot. The enhancement of fluorescence intensity of L with addition of Zn2+ is the consequence of the inhibited isomerization of the C=N bond, namely chelation-enhanced fluorescence (CHEF) effect.

【 授权许可】

Unknown