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| Item Type: | Article |
|---|---|
| Title: | A semisynthetic peptide-metalloporphyrin responsive matrix for artificial photosynthesis |
| Creators Name: | Sun, Z., Diebolder, C.A., Renault, L. and de Groot, H. |
| Abstract: | The CsmA protein from the baseplate of the Chlorobaculum tepidum is proposed as an attractive motif for the engineering of semisynthetic materials for artificial photosynthesis. We perform self-assembly of zinc protoporphyrin IX (ZnPP) with a truncated CsmA (tCsmA) amphipathic peptide scaffold for the bottom-up construction of a semisynthetic matrix for energy transfer. The resulting self-assembly shows an extended periodic structure with 7(2) helical symmetry. The complex is able to maintain a good photostability for at least 30 min when the concentration is more than 20 μM, and almost 100 % harvested energy can be transferred to the acceptor cation radical methyl viologen (MV(+)). The excitation-energy transfer rate of the complex was increased from the ns(−1) scale to the ps(−1) scale that is comparable to natural light-harvesting antenna systems. It contributes to converging evidence that chiral responsive matrix assemblies can be developed for efficient light energy harvesting in artificial photosynthesis. |
| Keywords: | Artificial Photosynthesis, Chirality, Exciton Energy Transfer, Self-Assembly, Semisynthetic Matrices |
| Source: | ChemPhotoChem |
| ISSN: | 2367-0932 |
| Publisher: | Wiley |
| Volume: | 3 |
| Number: | 8 |
| Page Range: | 630-635 |
| Date: | August 2019 |
| Official Publication: | https://doi.org/10.1002/cptc.201900063 |
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