| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Development of New Nonlinear Organic Ionic Crystals by Anionic Engineering with Halogen Substituents. |
| 초록 |
We synthesize new nonlinear optical (NLO) organic ionic crystals based on 2-(4-hydroxystyryl)-1-methylquinolinium cation (OHQ) with counter anions having halogen substituents for OHQ-1, OHQ-2. OHQ-1 and OHQ-2 crystals exhibit perfect second-order NLO response due to simultaneous electron-withdrawing inductive and electron-donating resonance effect of halogen substituents. In particular, we find that molecular nonlinearity of OHQ-1 is as high as that of OHQ-T which organic ionic crystal with 4-methylbenzenesulfonate counter anion (T) developed recently. In the hirshfield surface analysis, it is revealed that halogen substituent of the anion changes the π-π interactions and hydrogen bonds and consequently, enhances the molecular nonlinearity. Finally, in THz generation measurements, the 0.39-mm-thick OHQ-C crystal exhibits 27 and 1.5 times higher peak-to-peak THz field than 1.0-mm-thick ZnTe and 0.35-mm-thick OHQ-T crystals. |
| 저자 |
이지아1, 이승준1, 강봉주2, 신명훈1, 이승철1, 이승헌1, Mojca Jazbinsek3, 윤호섭1, 김동욱4, Fabian Rotermund2, 권오필1
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| 소속 |
1아주대, 2KAIST, 3Zurich Univ., 4경기대 |
| 키워드 |
Nonlinear optics; Organic crystals; Electro-optics; THz generation
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| E-Mail |
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