| 학회 |
한국고분자학회 |
| 학술대회 |
2014년 가을 (10/06 ~ 10/08, 제주 ICC) |
| 권호 |
39권 2호 |
| 발표분야 |
고분자가공/복합재료-자가치유 고분자와 복합소재 |
| 제목 |
Systematical controlling of surface property of graphene quantum dot (GQD) for surfactant behavior |
| 초록 |
Systematic control of surface chemistry of graphene quantum dots (GQDs) is extremely challenging and is one of the key technologies for applying GQDs into practical use. Here we prepared surface modified GQDs with direct bonding of small molecule on GQDs. It was observed that surface activities of GQDs were systematically controlled depending on the amount of small molecule on GQD. The modified GQDs could behave like both a molecular and a colloidal surfactant due to the controlled surface properties. In specific, surface modified GQD was capable of stabilizing Pickering emulsions of organic solvents in oil/water system and could also act as a molecular surfactant to disperse insoluble materials in water. Finally, surface modified GQDs were successfully applied as surfactant in emulsion polymerization. The ease of control of surface chemistry may offer great potential application in all system using surfactant. |
| 저자 |
조한희, 양현승, 강동진, 김범준
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| 소속 |
KAIST |
| 키워드 |
graphene quatum dot; surface modification; surfactant; Pickering emulsion; amphiphilicity
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| E-Mail |
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