e200301-101.ppt [호환 모드] - cheric · 2013. 12. 19. · relative permittivity and refractive...
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Molecular Interactions
Issues to Study:
Electrical Propertieselectrical dipole momentspolarizabilityrelative permittivity and refractive index
Intermolecular Interactionsinteractions between dipolesrepulsive interactionstotal interactions
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Electrical Dipole Moments
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1. Dipole moment의 크기는 분자구조와 어떤 연관성을 가지는가?2. 어떤 경우에 0이 되는가?3. 원자의 전기음성도(electronegativity)와의 관계는?
* Professor Linus Pauling
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구조적인 연관성 찾기
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Polarizability, Relative Permittivity, Refractive Index
* Clausius-Mossotti equation의 이해
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Dispersion of Refractive Index
1. Snell’s Law: incidence, reflection, refraction2. Total internal reflection의 이해3. Copper wire vs. Glass optic fiber vs. Plastic optic fiber
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Interactions between Dipoles
Dipole간의 거리와 방향(orientation)
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Pole의 개수와 거리와의 관계
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Dipole-Dipole interaction(Keesom interaction)
Dipole-Induced dipole interaction(Debye interaction)
Induced dipole-Induced dipole interaction)(London interaction, Dispersion)
Total Van der Waals attractive interaction = Keesom + Debye + London
* Additional hydrogen-bonding can be considered.
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1. Dipole moment와 polarizability의 크기에 따른 VDW의 변화2. 각 분자의 특성에 따른 Keesom, Debye, London의 구성 비율3. London interaction의 중요성4. 물의 특이성
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Overall Potential Energy
*Potential vs distance curve로 부터Force vs distance curve 도출
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Various Models for Overall Potential
* 각 모델의 의미를 생각해 보고 수학적으로 표현하기
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Lennard-Jones 12,6 Potential