Optical sensing of heavy metal ions in anionic micellar solution using a Pd porphyrin phosphorescent probe

被引：16

作者：

Hu, Shuang ^{[1
,2
]}

Mao, Hongsheng ^{[3
]}

Wang, Yu ^{[1
]}

机构：

[1] Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Peoples R China

[2] Shanxi Med Univ, Sch Pharm, Taiyuan 030001, Peoples R China

[3] Shanxi Med Univ, Grad Dept, Taiyuan 030001, Peoples R China

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2009年 / 204卷 / 01期

关键词：

Room temperature phosphorescence; Micelle; Palladium porphyrin; Heavy metal ion; Quenching; ROOM-TEMPERATURE PHOSPHORESCENCE; POLYCYCLIC AROMATIC-HYDROCARBONS; SODIUM DODECYL-SULFATE; PHARMACEUTICAL-PREPARATIONS; PARAMAGNETIC MOLECULES; ELECTRON-TRANSFER; AQUEOUS-SOLUTION; ENERGY-TRANSFER; STOPPED-FLOW; SOL-GEL;

D O I：

10.1016/j.jphotochem.2009.02.004

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using sodium sulfite as an oxygen scavenger, meso-tetra (4-N,N,N- trimethylanilinium) porphyrin-Pd (Pd-TAPP) emts strong and stable room temperature phosphorescence (RTP) in sodium dodecyl sulfate (SDS) micellar Solution. Heavy metal ions, including Fe2+, Co2+, Ni2+ and Cu2+ can efficiently quench the phosphorescence of Pd-TAPP, The Stern-Volmer constants increased in the order Fe2+ < Co2+ < Cu2+ < Ni2+. directly reflecting the relative sensitivity of the method for these ions. The detection limits calculated following the 3 sigma IUPAC criteria are: 2.3 x 10(-7) mol/L for Cu2+, 3.4 x 10(-7) mol/L for Co2+, 1.2 x 10(-7) mol/L for Ni2+ and 2.1 x 10(-6) mol/L for Fe2+. The addition of these ions also resulted in reduction of the lifetime (tau) of Pd-TAPR The linear relationship between the concentration of Fe2+, Co2+, Ni2+ or Cu2+ ions and tau(0)/tau indicated the dynamic quenching mechanism. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1 / 6

页数：6

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