Kim, Yoon-jeong Kim, Yang Hui Ahn, Seokhoon 2024-01-19T10:02:00Z 2024-01-19T10:02:00Z 2023-03-23 2023-03 1996-1944 https://pubs.kist.re.kr/handle/201004/113943 Defects on graphene over a micrometer in size were selectively blocked using polyvinyl alcohol through the formation of hydrogen bonding with defects. Because this hydrophilic PVA does not prefer to be located on the hydrophobic graphene surface, PVA selectively filled hydrophilic defects on graphene after the process of deposition through the solution. The mechanism of the selective deposition via hydrophilic-hydrophilic interactions was also supported by scanning tunneling microscopy and atomic force microscopy analysis of selective deposition of hydrophobic alkanes on hydrophobic graphene surface and observation of PVA initial growth at defect edges. English MDPI Open Access Publishing Selective Blocking of Graphene Defects Using Polyvinyl Alcohol through Hydrophilicity Difference Article 10.3390/ma16052001 1 Materials, v.16, no.5 Materials 16 5 Y scie scopus 000947433700001 2-s2.0-85149835061 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Physics, Applied Physics, Condensed Matter Chemistry Materials Science Metallurgy & Metallurgical Engineering Physics Article FILMS NANOCOMPOSITES TRANSPARENT OXIDE AREA graphene defect healing polyvinyl alcohol (PVA) hydrophilic interactions