A selective colorimetric chemosensor for Fe3+ |
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| Authors: | Min‐Hsiu Kao Chin‐Feng Wan An‐Tai Wu |
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| Affiliation: | 1. Department of Chemistry, National Changhua University of Education, Changhua, Taiwan;2. Department of Medical Applied Chemistry, Chung Shan Medical University, Taichung, Taiwan |
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| Abstract: | Two simple colorimetric receptors PS and PP (thiophene and pyridine appended derivative) were prepared and their cation sensing properties were investigated. Receptors PS and PP displayed a selective colorimetric change (from colorless to orange) upon binding to Fe3+ in MeOH solution. The association constants for receptors PS–F e3+ and PP–F e3+ in MeOH were determined to be 1.15 × 106 and 4.31 × 106 M?1, respectively, using Hill plots. The detection limits of PS and PP were 490.7 ppm and 393.7 ppm, respectively. |
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| Keywords: | colorimetric pyridine thiophene |
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