Details

Autor(en) / Beteiligte

• Wang, Yu
• Sun, Huanhe
• Hou, Lingjie
• Shang, Zhuobin
• Dong, Zhenming
• Jin, Weijun

Titel

1,4-Dihydroxyanthraquinone-Cu super(2+) ensemble probe for selective detection of sulfide anion in aqueous solution

Ist Teil von

• Analytical methods, 2013-09, Vol.5 (20), p.5493-5500

Erscheinungsjahr

2013

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Based on the displacement strategy, a new and simple sulfide-selective chemosignaling system was devised using 1,4-dihydroxyanthraquinone (DHAQ)-Cu super(2+) ensemble. In aqueous solution containing 10% ethanol (HEPES buffer, pH7.4), DHAQ could give rise to a visible yellow-to-pink color change with the addition of Cu super(2+). The resulting pink solution changed to yellow upon subsequent addition of sulfide anion. Moreover, DHAQ displays an "ON-OFF-ON" mode fluorescence change with alternately added Cu super(2+) and S super(2-). Experimental results show a low interference response towards other common anions. The selective switch-on fluorescence response of the sensing ensemble to S super(2-) makes it suitable for sensing of S super(2-) in aqueous solution. The detection limit is 5.98 10 super(-8) M.