Abstract
A novel photochromic fluorophores based on diarylethene (BMBT) was synthesized with simple process, which displays high selectivity for metal ion Cu2+ and Zn2+. BMBT displays an excellent photochromism characteristic with reversibly spectral change upon alternating irradiation with ultraviolet and visible light. BMBT can detect Cu2+ by color change from pale yellow to dark green in THF solution and exhibits an easily detectable change in fluorescence intensity when the concentration of metal ion Cu2+ and Zn2+ were increased, respectively. More importantly, BMBT exhibits good hydrophilic, low toxicity and good biocompatibility, which indicated that it can serve as a detector for the metal ion Cu2+ and Zn2+ in environmental pollutants and biological systems.
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