Electrogenerated chemiluminescence of sterically hindered porphyrins in aqueous media |
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Authors: | Fang-Chung Chen Jinn-Hsuan Ho Chin-Yu Chen YOliver Su Tong-Ing Ho |
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Institution: | Department of Chemistry, National Taiwan University, Taipei 10764, Taiwan, ROC |
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Abstract: | A sterically hindered water-soluble porphyrin, tetrakis(3-sulfonatomesityl)porphyrin (H2TSMP), could form stable radical cation in aqueous media after electrochemical one electron oxidation. The anodic oxidation of H2TSMP in the presence of tripropylamine or C2O42? as a coreactant in aqueous solution produces electrogenerated chemiluminescence (ECL) with maxima at 640 and 700 nm. The same emission spectrum of ECL and fluorescence indicates that the ECL emission is from the singlet state of H2TSMP. The annihilation reactions of ZnTSMP![/>+</sup>and ZnTSMP<sup><img style=](https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/rad) | |
Keywords: | Electrogenerated chemiluminescence Sterically hindered Porphyrins |
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