Facile Ligand Exchange of Ionic Ligand-Capped Amphiphilic Ag<sub>2</sub>S Nanocrystals for High Conductive Thin Films
DC Field | Value | Language |
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dc.contributor.author | Sung, Yunmo | - |
dc.contributor.author | Kim, Hyun Beom | - |
dc.contributor.author | Kim, Ji Heon | - |
dc.contributor.author | Noh, Yoona | - |
dc.contributor.author | Yu, Jaesang | - |
dc.contributor.author | Yang, Jaesung | - |
dc.contributor.author | Kim, Tae Hyun | - |
dc.contributor.author | Oh, Juwon | - |
dc.date.accessioned | 2024-06-11T07:32:21Z | - |
dc.date.available | 2024-06-11T07:32:21Z | - |
dc.date.issued | 2024-01 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.issn | 1944-8252 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/26035 | - |
dc.description.abstract | A surface ligand modification of colloidal nanocrystals (NCs) is one of the crucial issues for their practical applications because of the highly insulating nature of native long-chain ligands. Herein, we present straightforward methods for phase transfer and ligand exchange of amphiphilic Ag2S NCs and the fabrication of highly conductive films. S-terminated Ag2S (S-Ag2S) NCs are capped with ionic octylammonium (OctAH(+)) ligands to compensate for surface anionic charge, S2-, of the NC core. An injection of polar solvent, formamide (FA), into S-Ag2S NCs dispersed in toluene leads to an additional envelopment of the charged S-Ag2S NC core by FA due to electrostatic stabilization, which allows its amphiphilic nature and results in a rapid and effective phase transfer without any ligand addition. Because the solvation by FA involves a dissociation equilibrium of the ionic OctAH(+) ligands, controlling a concentration of OctAH(+) enables this phase transfer to show reversibility. This underlying chemistry allows S-Ag2S NCs in FA to exhibit a complete ligand exchange to Na+ ligands. The S-Ag2S NCs with Na+ ligands show a close interparticle distance and compatibility for uniformly deposited thin films by a simple spin-coating method. In photoelectrochemical measurements with stacked Ag2S NCs on ITO electrodes, a 3-fold enhanced current response was observed for the ligand passivation of Na+ compared to OctAH(+), indicating a significantly enhanced charge transport in the Ag2S NC film by a drastically reduced interparticle distance due to the Na+ ligands. | - |
dc.format.extent | 9 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Facile Ligand Exchange of Ionic Ligand-Capped Amphiphilic Ag<sub>2</sub>S Nanocrystals for High Conductive Thin Films | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1021/acsami.3c15472 | - |
dc.identifier.scopusid | 2-s2.0-85182574761 | - |
dc.identifier.wosid | 001150587700001 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.16, no.3, pp 3853 - 3861 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 16 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 3853 | - |
dc.citation.endPage | 3861 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | COLLOIDAL NANOCRYSTALS | - |
dc.subject.keywordPlus | QUANTUM DOTS | - |
dc.subject.keywordPlus | CHARGE-TRANSPORT | - |
dc.subject.keywordAuthor | Ag2S nanocrystals | - |
dc.subject.keywordAuthor | ligand exchange | - |
dc.subject.keywordAuthor | phase transfer | - |
dc.subject.keywordAuthor | ionic ligand | - |
dc.subject.keywordAuthor | conductive nanocrystalfilm | - |
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