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dc.contributor.authorChoi, Yoohyeon-
dc.contributor.authorTran, Ngoc Tuan-
dc.contributor.authorJang, Doojoon-
dc.contributor.authorPark, Minju-
dc.contributor.authorYoo, Chun-Jae-
dc.contributor.authorKim, Jin Young-
dc.contributor.authorLee, Hyunjoo-
dc.contributor.authorKim, Heesuk-
dc.date.accessioned2024-01-19T08:01:08Z-
dc.date.available2024-01-19T08:01:08Z-
dc.date.created2023-12-21-
dc.date.issued2024-01-
dc.identifier.issn1463-9262-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/112966-
dc.description.abstractAs global interest in carbon-neutrality policies grows, the demand for sustainable alternatives to fossil fuels intensifies. Herein, we demonstrate functionalized lignin-based n- and p-dopants for nanocarbon materials, providing promising eco-friendly alternatives to chemical dopants derived from fossil fuels. A simple microwave-assisted phenolation of organosolv lignin introduces phenol groups, offering additional reaction sites and enhancing solvent solubility for uniform, reliable and efficient carbon nanotube (CNT) doping. To create effective n- and p-dopants, the phenolated lignin is further functionalized with amine and hexafluoropropyl groups, respectively. The aminated and fluorinated lignin-doped CNTs present the Seebeck coefficients of -48.0 and 53.9 mu V K-1, respectively, confirming an efficient and eco-friendly conversion between n- and p-type CNT. Notably, this n-doping performance is of particular significance since stable and reliable n-doping is challenging due to the inherent p-type semiconducting properties of CNTs. As a proof of concept, we demonstrate a flexible thermoelectric generator using 10 p-n pairs of the CNT films. The output voltage (7.86 mV) and output power (247 nW) of the flexible generator at Delta T = 15 K confirm that the aminated- and fluorinated lignin-doped CNT films exhibit n- and p-type characteristics, respectively. This study paves the way for sustainable, lignin-based doping of carbon nanomaterials, offering a green alternative to traditional fossil fuel-derived dopants and contributing to the transition towards carbon-neutral technologies. We strategically modify lignin as effective p- and n-dopants for nanocarbon materials, offering promising alternatives to chemical dopants from fossil-fuels.-
dc.languageEnglish-
dc.publisherRoyal Society of Chemistry-
dc.titleEco-friendly conversion between n- and p-type carbon nanotubes based on rationally functionalized lignin biopolymers-
dc.typeArticle-
dc.identifier.doi10.1039/d3gc03944g-
dc.description.journalClass1-
dc.identifier.bibliographicCitationGreen Chemistry, v.26, no.1, pp.330 - 339-
dc.citation.titleGreen Chemistry-
dc.citation.volume26-
dc.citation.number1-
dc.citation.startPage330-
dc.citation.endPage339-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid001119541000001-
dc.relation.journalWebOfScienceCategoryChemistry, Multidisciplinary-
dc.relation.journalWebOfScienceCategoryGreen & Sustainable Science & Technology-
dc.relation.journalResearchAreaChemistry-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.type.docTypeArticle-
dc.subject.keywordPlusCORROSION INHIBITION-
dc.subject.keywordPlusMANNICH REACTION-
dc.subject.keywordPlusMILD-STEEL-
dc.subject.keywordPlusPHENOLATION-
dc.subject.keywordPlusTRANSPORT-
dc.subject.keywordPlusKRAFT-
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KIST Article > 2024
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