Reduced N-methyl-pyridylethynyl porphyrins exhibit strong near-IR absorptions |
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Authors: | Ching-Yao Lin Sung-Chou Huang Yen-Chuan Chen |
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Affiliation: | aDepartment of Applied Chemistry, National Chi Nan University, 302 University Road, Puli, Nantou Hsien 54561, Taiwan |
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Abstract: | Porphines bearing two N-methyl-4-pyridylethynyl substituent reversibly undergo two one-electron reductions at room temperature. The anion radicals and di-anions show diminished visible bands (450 nm and 600–700 nm) and intense absorptions in the 800-nm and 1100-nm region, respectively. Some of the near-IR bands have extinction coefficients greater than 1.5 × 105 M−1 cm−1. |
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Keywords: | Porphyrins Electrochemistry Spectroelectrochemistry Reduction Near-IR |
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