A novel pyridyl triphenylamine-BODIPY aldoxime: Naked-eye visible and fluorometric chemodosimeter for hypochlorite

作者：Xu, Xiu-xiu; Qian, Ying^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2017, 183: 356-361.

DOI：10.1016/j.saa.2017.04.043

• Aldoxime
• Triphenylamine-BODIPY
• Hypochlorite detection
• C=N isomerization
• Naked-eye visible

An aldoxime containing fluorescent probe based on vinylpydine-appended triphenylamine-BODIPY has been designed and used for hypochlorite detection. OX-PPA-BODIPY was developed by introducing an aldoxime group into the 2-position of BODIPY, which can be used for the detection of hypochlorite with a sharp color change from pink to green. The attachment of 4-vinylpyridine moiety to triphenylamine-BODIPY constructs a fluorogen with desirable conjugated system. The probe, which displays extremely weak fluorescence owing to the C=N isomerization mechanism at 2-position of BODIPY, responds to HClO/ClO- through a dramatic enhancement of its fluorescence intensity. This new probe, a naked-eye visible and fluorometric chemodosimeter, exhibits high selectivity and sensitivity toward hypochlorite over other reactive oxygen species (ROS) and anions. The detection is accompanied by a 20-fold increase in fluorescent intensity (Phi(F) from 0.02 to 0.43). The detection limit of the probe for hypochlorite is 7.37 x 10(-7) M. Moreover, OX-PPA-BODIPY can be used to detect hypochlorite in real water samples.

• 出版日期2017-8-5
• 单位东南大学