Ratiometric fluorescence signalling of fluoride ions by an amidophthalimide derivative

Journal of Chemical Sciences

Bhaswati Bhattacharya¹  Moloy Sarkar¹  Anunay Samanta1¹  Ravi Kumar Kanaparthi¹  Raghavendra Yellampalli² 

[1] School of Chemistry, University of Hyderabad, Hyderabad 500 046$$;Training School, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085$$

关键词: Chemosensor;    ratiometric fluorescence signalling;    fluoride ion;    proton transfer;    density functional calculation.;   

DOI  :  

来源: Indian Academy of Sciences

【 摘 要 】

Fluorescence behaviour of 4-benzoylamido-N-methylphthalimide (1), designed and developed for selective detection of fluoride ions, is reported. 1 displays F--induced colour change that allows its detection with the naked eye. The F- specificity of the sensor system is evident from the fact that unlike F-, other halides do not affect the absorption characteristics of 1. Apart from the colorimetric response, the fluorescence output of 1 is also modulated by F- in a manner that permits ratiometric fluorescence signalling of F- as well. It is found that the system can detect F- in the concentration range of 10- 60 𝜇M. The results of the experiments and theoretical calculations unambiguously suggest that the changes of the electronic absorption and fluorescence behaviour of 1, which have been exploited for signalling purpose, are due to F--induced deprotonation of the 4-amido moiety of the sensor system.

【 授权许可】

Unknown