A fluorescent probe for both pH and Zn2+ based on 2-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenol

作者：Ju, Chuan-Chuan; Yin, Hong-Ju; Yuan, Chui-Li; Wang, Ke-Zhi^*

来源：Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy , 2011, 79(5): 1876-1880.

DOI：10.1016/j.saa.2011.05.079

• Probe
• Zinc
• pH
• Spectroscopy

A sensitive fluorescent probe 2-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenol (HBIZ) for pH and Zn2+ has been developed. Great changes have taken place in the UV-vis absorption and fluorescence spectra for HBIZ upon increasing pH of its aqueous solution, acting as a pH-induced emission "off-on-off" switch with large enhancement factors of similar to 290 and similar to 75 over the pH range of 1.00-5.40 and 5.20-10.40. A over 100-fold fluorescence enhancement was also observed after complexation of HBIZ to Zn2+ in N,N-dimethylformamide.

• 出版日期2011-9
• 单位北京师范大学