Semiconducting-polymer-dot based fluorescent probe for turn-on sensing of phytic acid

Analytical Methods

Han Mei²  Cong Wang¹  Junyong Sun²  Feng Gao² 

[1] Anhui Key Laboratory of Spin Electron and Nanomaterials, School of Chemistry & Chemical Engineering, Suzhou University,Suzhou,P. R. ChinaLaboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. ChinaAnhui Key Laboratory of Spin Electron and Nanomaterials, School of Chemistry & Chemical Engineering, Suzhou University,Suzhou,P. R. ChinaAnhui Key Laboratory of Spin Electron and Nanomaterials, School of Chemistry & Chemical Engineering, Suzhou University,Suzhou,P. R. ChinaLaboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. ChinaLaboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. ChinaAnhui Key Laboratory of Spin Electron and Nanomaterials, School of Chemistry & Chemical Engineering, Suzhou University,Suzhou,P. R. ChinaLaboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. China;Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. ChinaLaboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. ChinaLaboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), College of Chemistry and Materials Science, Anhui Normal University,Wuhu 241000,P. R. China

DOI  :  10.1039/C6AY02082H

学科分类：分析化学

来源: Royal Society of Chemistry

【 摘 要 】

In this work, the synthesis of carboxyl functionalized semiconducting polymer dots (PFBT-COOH Pdots) is achieved by a co-precipitation method. The PFBT-COOH Pdots show extraordinary fluorescence brightness and excellent photostability, and the fluorescence of PFBT-COOH Pdots is selectively quenched by ferric ions. Upon addition of phytic acid (PA) to the Pdots/Fe(III) system, PA is able to selectively and preferentially bind with the ferric ions, thus leading to fluorescence recovery of the PFBT-COOH Pdots. Therefore, a simple, selective and sensitive fluorescence probe for PA detection is designed based on the fluorescence quenching-recover process. This probe exhibits a good linear relationship (R = 0.9988) with a linear range from 2.5 μmol L−1 to 450 μmol L−1 and a limit of detection of 0.63 μmol L−1. The probe also shows good selectivity for PA and a good recovery ratio, and it is applied to the determination of PA in a corn grains sample with satisfactory results.

【 授权许可】

Unknown