BINOL-based fluorescent sensor for recognition of Cu(II) and sulfide anion in water.
A multifunctional fluorescent sensor based on a cyclen-appended BINOL derivative (R-1) was synthesized and characterized. It can display on-off-type fluorescence change with high selectivity toward Cu(II) among 19 metal ions in 100% aqueous solution. Furthermore, the in situ generated R-1-Cu(II) ensemble could recover the quenched fluorescence upon the addition of sulfide anion resulting in a off-on-type sensing with a detection limit of micromolar range in the same medium. No interference was observed from other biothiols and anions, including GSH, l-Cys, DTT, and sulfates, making it a highly sensitive and selective sulfide probe.
Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, PR China.
Ming-Qi
MQ
Wang
Kun
K
Li
Ji-Ting
JT
Hou
Ming-Yu
MY
Wu
Zeng
Z
Huang
Xiao-Qi
XQ
Yu
D000838:Anions / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D005453:Fluorescence; D015394:Molecular Structure; D009284:Naphthols / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013438:Sulfhydryl Compounds / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D014867:Water
D000838:Anions; C406944:BINOL, naphthol; D009284:Naphthols; D013438:Sulfhydryl Compounds; D013440:Sulfides; D014867:Water; D003300:Copper