Directed Nanoscale Self-Assembly of Natural Photosystems on Nitrogen-Doped Carbon Nanotubes for Solar-Energy Harvesting
| Autor: | Sang Ouk Kim, Nyeongbeen Jo, Hwiseok Jun, Yoon Sung Nam, Taeho Shin, Insu Kim, Jeonga Kim, Moon Young Yang, Gil-Yong Lee |
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| Rok vydání: | 2019 |
| Předmět: |
Physics::Biological Physics
Materials science business.industry Computer Science::Neural and Evolutionary Computation Biochemistry (medical) Biomedical Engineering Nanotechnology Nitrogen doped General Chemistry Carbon nanotube Solar energy law.invention Condensed Matter::Soft Condensed Matter Biomaterials Solar energy harvesting law Quantum efficiency Self-assembly business Nanoscopic scale Photosystem |
| Zdroj: | ACS Applied Bio Materials. 2:2109-2115 |
| ISSN: | 2576-6422 |
| DOI: | 10.1021/acsabm.9b00120 |
| Popis: | Natural photosystems (PSs) have received much attention as a biological solar energy harvester because of their high quantum efficiency for energy transfer. However, the PSs hybridized with solid electrodes exhibit low light-harvesting efficiencies because of poor interface properties and random orientations of PSs, all of which interfere with efficient charge extraction and transfer. Herein, we report the linker-free, oriented self-assembly of natural PSs with nitrogen-doped carbon nanotubes (NCNTs) via electrostatic interaction. Protonated nitrogen-doped sites on the NCNTs facilitate spontaneous immobilization of the negatively charged stroma side of PSs, which provides a favorable orientation for electron transfer without electrically insulating polymer linkers. The resulting PS/NCNT hybrids exhibit a photocurrent density of 1.25 ± 0.08 μA cm |
| Databáze: | OpenAIRE |
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