TY - JOUR
T1 - Development of a heterobimetallic Ru(II)-Cu(II) complex for highly selective and sensitive luminescence sensing of sulfide anions
AU - Zhang, Run
AU - Yu, Xiaojing
AU - Yin, Yuejiao
AU - Ye, Zhiqiang
AU - Wang, Guilan
AU - Yuan, Jingli
PY - 2011/4/8
Y1 - 2011/4/8
N2 - A heterobimetallic ruthenium(II)-copper(II) complex-based luminescent chemosensor, [Ru(bpy)2(bpy-DPA)Cu]4+ (bpy: 2,2′-bipyridine; bpy-DAP: 4-methyl-4′-[N,N-bis(2-picolyl)amino-methylene]-2,2′-bipydine), has been designed and synthesized for the highly selective and sensitive recognition and detection of sulfide anions in 100% aqueous solutions. Owing to the high affinity of sulfide to Cu(II), the non-luminescent chemosensor can specifically and rapidly react with sulfide to yield the corresponding ruthenium(II) complex, [Ru(bpy)2(bpy-DPA)]2+, accompanied by the remarkable luminescence enhancement. The dose-dependent luminescence enhancement of the sensor shows a good linearity with a detection limit of 20.7nM for sulfide anions. The novel luminescence sensor has a widely available pH range from 4.5 to 10 and an excellent response selectivity to sulfide only even in the presence of various other anions. Based on this chemosensor, a rapid, selective and sensitive luminescence method for the detection of sulfide anions in wastewater samples was established. The coefficient variations (CVs) of the method are less than 3.1%, and the recoveries are in the range of 90.9-108.5%.
AB - A heterobimetallic ruthenium(II)-copper(II) complex-based luminescent chemosensor, [Ru(bpy)2(bpy-DPA)Cu]4+ (bpy: 2,2′-bipyridine; bpy-DAP: 4-methyl-4′-[N,N-bis(2-picolyl)amino-methylene]-2,2′-bipydine), has been designed and synthesized for the highly selective and sensitive recognition and detection of sulfide anions in 100% aqueous solutions. Owing to the high affinity of sulfide to Cu(II), the non-luminescent chemosensor can specifically and rapidly react with sulfide to yield the corresponding ruthenium(II) complex, [Ru(bpy)2(bpy-DPA)]2+, accompanied by the remarkable luminescence enhancement. The dose-dependent luminescence enhancement of the sensor shows a good linearity with a detection limit of 20.7nM for sulfide anions. The novel luminescence sensor has a widely available pH range from 4.5 to 10 and an excellent response selectivity to sulfide only even in the presence of various other anions. Based on this chemosensor, a rapid, selective and sensitive luminescence method for the detection of sulfide anions in wastewater samples was established. The coefficient variations (CVs) of the method are less than 3.1%, and the recoveries are in the range of 90.9-108.5%.
KW - Chemosensor
KW - Heterobimetallic ruthenium(II)-copper(II) complex
KW - Luminescence sensing
KW - Sulfide anions
UR - http://www.scopus.com/inward/record.url?scp=79953164844&partnerID=8YFLogxK
U2 - 10.1016/j.aca.2011.02.051
DO - 10.1016/j.aca.2011.02.051
M3 - Article
C2 - 21458635
AN - SCOPUS:79953164844
SN - 0003-2670
VL - 691
SP - 83
EP - 88
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - 1-2
ER -