Control of the Location of Nitrogen Doping in Carbon Thin Films Derived from Protein-Based Materials
발표자
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초록
내용
The location of heteroatom doping in carbon materials can be controlled by several methods, such as chemical doping, templating, electrochemical doping, and post-synthesis modification. However, even at the same heteroatom content, the location and distribution of the heteroatom are significantly different, so that an understanding of the structure-property relationship is still lacking. Silk fibroin protein is one of the promising alternatives to traditional carbonaceous materials due to its intrinsic heteroatom doping based on the peptide bonds and its ability to be transformed into sp2-hybridized carbon structures through pyrolysis in addition to its sustainability with eco-friendly properties. In this work, we selectively functionalized the reactive amino acid residues of silk molecules to precisely control the location of nitrogen doping, where the functionalized silk was processed into a thin film, followed by pyrolysis to fabricate nitrogen-doped carbon thin films.