Analytical Sciences

A Novel Copper(II) Sensor Based on a Unique Water-soluble Porphyrin

Qiang FEI,* Hongyan SHAN,* Yanfu HUAN,* Zhiquan ZHANG,* Hongyu MI,* Hui XU,* Guanghua LI,** Fei CHEN,*** and Guodong FENG*

*College of Chemistry, Jilin University, Changchun 130023, People’s Republic of China
**State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, P. R. China
***Changchun Institute of Metrology, Changchun 130012, P. R. China

A unique water-soluble porphyrin [5,10,15,20-tetra(3-ethoxy-4-hydroxy-5-sulfonate)phenyl porphyrin, H₂TEHPPS] was designed and synthesized, which could be used as a potential sensor for the determination of Cu²⁺. Studies were performed in the solution. The concentration of H₂TEHPPS was 5 μmol L⁻¹. The optical properties of H₂TEHPPS were investigated based on the absorption spectra. The results show that the absorbance of H₂TEHPPS at 417 nm is directly proportional to the concentration of Cu²⁺ in the range of 0 – 2.5 μmol L⁻¹. H₂TEHPPS can thus be used as a novel class of Cu²⁺ sensors.

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