A+ 받은 유기화학실험 2_ Exp 10_Synthesis of a Photochromic Dye (DASA) (실험방법, 프리랩, 랩리포트 모음)

소개

Exp 10_Synthesis of a Photochromic Dye (DASA)
해당실험범위의 교과서, 실험방법, 프리랩, 랩리포트, 병합본 입니다.
랩리포트 보시면서 프리랩 부족하다 싶은거 채우시면 감점 확률 줄이실 수 있을 겁니다.

* 해당자료 감점 내용
프리랩 : 없음
랩리포트 : 없음

목차

1. Background Information
2. Key Laboratory Techniques
3. Materials
4. Chemicals and Solvents
5. <Experimental Procedure>
6. 실험 목표
7. 원리 및 실험 방법
8. 사용되는 시약의 특성
9. 결과
10. 토의

본문내용

Photochromism is defined as a reversible transformation of a chemical species induced in one or both directions by absorption of electromagnetic radiation between two forms, A and B, having different absorption spectra. One of the two molecules will inevitably be more stable than the other, resulting in that form of the molecule being favored by thermodynamics. Positive photochromism involves the conversion of a colorless compound A into a colored compound B. An example of positive photochromism is eyeglasses that change into sunglasses when exposed to light (Figure 1). The lenses in these glasses contain a compound that undergoes a positive photochromism process when exposed to UV light.

Several classes of organic photochromic compounds have been identified. These include spiropyrans/spiroxazines, diarylethenes, and azo compounds, among others (Figure 2).

In today’s experiment, you will prepare an organic dye that has been shown to participate in negative photochromism.

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