Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 115, Issue 17, Pages 8832-8839Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp112244m
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Funding
- DFG
- Ministry of Science, Research
- Arts of Baden-Wurttemberg [7713.14-300]
- Karlsruhe School of Optics and Photonics (KSOP)
- Karlsruhe Institute of Technology at the Institute of Nanotechnology
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Self-assembling porphyrins are promising materials to mimic natural bacteriochlorophylls c, d, or e encountered in the chlorosomes of photosynthetic bacteria. We have studied four novel magnesium porphyrins mimicking this chlorosomal antenna system. In contrast to previous articles reporting synthetic Zn-porphyrins, our studies focus on porphyrins with Mg as the central atom, which mimic more closely the natural bacteriochlorophylls. The analysis of time-resolved photoluminescence dynamics based on the decay-associated emission spectra shows a short-lived component associated with the supramolecular architecture. It confirms the ordered nature of the investigated porphyrins and suggests that these self-assemblies can be used as artificial antennae in light-harvesting devices like biomimetic solar cells.
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