physical chemistry experiment- raman spectroscopy report

소개

이 실험 과목 A+받은 레포트. 매우 오랜 시간동안 쓴 레포트임.
그래프들은 오리진을 사용하였고, 실험 데이터에서 baseline을 빼는 과정을 거쳐야함.

목차

1. introduction
2. experimental method
3. result
4. discussion
5. conclusion
6. reference

본문내용

Raman spectroscopy is the measurement of the wavelength and intensity of inelastically scattered light from molecule. When a sample is exposed to a monochromatic light in visible region, the sample absorbs light and major portion of the light gets transmitted through the sample. However, some part of the light is scattered by the sample in all directions. The photons that have specific frequency. Most molecules are in the ground state. Photons from the light are absorbed by the molecules, exciting them to a virtual energy state. If the photon is reemitted, scattering occur.

Figure 1 scattering
At this time, the scattering frequency does not change from original frequency of photon; we call it elastic scattering, or Rayleigh scattering. On the other hands, for around 1%scattering, the frequency changes; we call it inelastic scattering. Inelastic scattering is also called Raman scattering. Raman scattering arise from modulation of the electron distribution (polarizability) due to the vibrations of the molecule.

참고자료

· NIST Chemistry WebBook (http://webbook.nist.gov/chemistry)
· lambda solutions,inc ,Raman analysis of fatty acid unsaturation, lambda solutions,inc., 2005
· Andrew Dennis BSc, Raman spectroscopy of edible oils and fats, PerkinElmer,2007
· Donald A. McQuarrie, physical chemistry, a molecular approach, university science books,1997
· https://www.researchgate.net/figure/Graphic-representation-of-the-normal-modes-ofbenzene-and-their-symmetry-classification_fig3_228578905
· https://www.slideshare.net/karangupta0411/ftir-and-its-interpretation-by-karan-ajay-gupta