A novel NIR fluorescent turn-on sensor for the detection of pyrophosphate anion in complete water system

摘要

A novel fluorescent sensor DCAA-Cu~(2+) was developed, showing turn-on fluorescence in NIR region with high selectivity to pyrophosphate anion in 100% aqueous solution. The selective recognition and sensing of biologically important anions has attracted great attention for both chemists and biologists. Near-infrared (NIR) dyes with emission wavelengths in the region of 650-900 nm are preferable to bio-imaging with several advantages, such as penetrating deeper into the tissue with smaller scattering, lower damage of living-cells, and less auto-fluorescence with much lower background signal.