Y. Taniguchi, T. Miki, Takanori Mitsuno, Y. Ohno, M. Nagase, K. Minagawa, M. Yasuzawa
{"title":"Hydrophilic graphene film by molecular functionalization","authors":"Y. Taniguchi, T. Miki, Takanori Mitsuno, Y. Ohno, M. Nagase, K. Minagawa, M. Yasuzawa","doi":"10.1109/ICIPRM.2016.7528699","DOIUrl":null,"url":null,"abstract":"Hydrophilic graphene film by molecular functionalization was investigated. In order to realize the hydrophilic graphene film without introducing defects, the pyrene derivative with a phosphorylcholine group was synthesized. Functionalization time dependences on contact angle and 4-terminal resistivity were measured using SiC epitaxial graphene. Contact angle was almost constant (76°) at first, and then, suddenly decreased (59°) at 3 min. On the other hand, resistivity was gradually increased (0.6 to 2.4 μΩm), and saturated after 5 min, indicates that this functionalization process does not break the graphene structure. These results indicate that hydrophilic graphene film was successfully fabricated by molecular functionalization.","PeriodicalId":357009,"journal":{"name":"2016 Compound Semiconductor Week (CSW) [Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2016-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 Compound Semiconductor Week (CSW) [Includes 28th International Conference on Indium Phosphide & Related Materials (IPRM) & 43rd International Symposium on Compound Semiconductors (ISCS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICIPRM.2016.7528699","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Hydrophilic graphene film by molecular functionalization was investigated. In order to realize the hydrophilic graphene film without introducing defects, the pyrene derivative with a phosphorylcholine group was synthesized. Functionalization time dependences on contact angle and 4-terminal resistivity were measured using SiC epitaxial graphene. Contact angle was almost constant (76°) at first, and then, suddenly decreased (59°) at 3 min. On the other hand, resistivity was gradually increased (0.6 to 2.4 μΩm), and saturated after 5 min, indicates that this functionalization process does not break the graphene structure. These results indicate that hydrophilic graphene film was successfully fabricated by molecular functionalization.
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