| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Exceptionally Robust and Stable Quantum Dots by Surface Encapsulation Realized by Functional Polymeric Ligands |
| 초록 |
Quantum dots (QDs), also called semiconductor nanocrystals, are widely applied to many fields due to their outstanding photoluminescent (PL) quantum yield (QY) and facile tunability of emission wavelength. However, their limited long-term stability makes QDs suffer from PL QY deterioration. In order to overcome these disadvantages, PMMA-b-PGMA-SH (Poly methyl methacrylate-block-Polyglycidyl methacrylate-SH) ligands are readily introduced. Upon being substituted, epoxy ring on the PGMA block can be opened and crosslinked each other by cationic ring opening polymerization mediated by Lewis acidic catalysts, in mild room temperature condition without any harsh reaction conditions. After crosslinking PGMA block, surface-related oxidation processes were effectively suppressed, thereby endowing enhanced thermal and oxidative stability to QDs. Our passivation methods can be applied to device fabrication steps which include harsh solution-based processes. |
| 저자 |
고재완1, 정병국2, 장준혁3, 배완기4, 방준하1
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| 소속 |
1고려대, 2한국과학기술원, 3서울대, 4성균관대 |
| 키워드 |
Quantum dots; Functional polymeric ligand; Encapsulation; Surface passivation
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| E-Mail |
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