Tetraphenylethene-pyridine salts as the first self-assembling chemosensor for pyrophosphate.
We presented a novel approach for pyrophosphate (PPi) sensing. Two tetraphenylethene (TPE)-functionalised pyridine salts (TPM and TPH) were designed and synthesized. Both of them exhibited weak emission in the solution state that originates from intramolecular charge transfer (ICT) from TPE to the pyridine; the addition of PPi into the TPM aqueous solution would enhance the fluorescence intensity, which eliminates the emission quenching effect of the iodide ion by the formation of PPi-sensor nanoparticles. The detection limit of TPM was determined to be as low as 133 nM. Meanwhile, a thin solid film of TPM that could detect PPi rapidly was conveniently prepared.
Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, No. 29 Wangjiang Road, Chengdu, P. R. of China 610064. kli@scu.edu.cn xqyu@scu.edu.cn.
Hao-Ran
HR
Xu
Kun
K
Li
Shu-Yan
SY
Jiao
Sheng-Lin
SL
Pan
Jun-Ru
JR
Zeng
Xiao-Qi
XQ
Yu
D002623:Chemistry Techniques, Analytical; D011756:Diphosphates / Q000032:analysis* / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D006367:HeLa Cells; D006801:Humans; D057230:Limit of Detection; D011725:Pyridines / Q000737:chemistry*; D012492:Salts / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013267:Stilbenes / Q000737:chemistry*
D011756:Diphosphates; D005456:Fluorescent Dyes; D011725:Pyridines; D012492:Salts; D013267:Stilbenes; C107241:diphosphoric acid; C023666:pyridine