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That’s cool-------- Bioluminescence and Chemiluminescence

That’s cool-------- Bioluminescence and Chemiluminescence. Key words. Chemiluminescence Bioluminescence Antioxidant. Chemiluminescence. It is the emission of energy with limited emission of luminescence, as the result of a chemical reaction.

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That’s cool-------- Bioluminescence and Chemiluminescence

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  1. That’s cool--------Bioluminescence and Chemiluminescence

  2. Key words • Chemiluminescence • Bioluminescence • Antioxidant

  3. Chemiluminescence • It is the emission of energy with limited emission of luminescence, as the result of a chemical reaction. • The ingredient of Chemiluminescence is always Luminol .

  4. Luminol (3-Aminophthalhydrazide) is a useful chemical reagent that exhibits chemiluminescence, with a striking blue glow, when mixed with an appropriate oxidizing agent. .It is a white to slightly yellow crystalline solid that is soluble in most polar organic solvents, but insoluble in water. But It is bad for human bodies, especially for eyes and skin. Because it can emit light when it is oxidized, It can be used in criminal investigation to detect blood.

  5. light stick: it uses chemiluminescent reactions and works without an external energy source. • The principle how light sticks work: • CPPO+H2O2——2C6H5OH+2CO2 • In this process,a intermedium will appear that has high energy and it will pass the energy to dye. Then excited electronic state becomes unstable so that it will release light.

  6. Bioluminescence means that organisms or its extractive can emit light, such as firefly(a flying insect with a tail that shines in the dark).

  7. Antioxidant • Antioxidant: A kind of substance that reacts so readily with oxygen, such as VITAMIN C or E. Antioxidant can prevent human body from the harmful effect of oxygen and even the senium. We can often get Antioxidant from green tea, apple and broccoli.

  8. Makes cut fruit turn brown— • The color is due to brown pigments that are formed by the oxidation of colorless compounds normally present in the cell of the fruit. Oxygen in the air is oxidizing agent that reacts with the colorless compounds to produce the brown pigments. The oxygen is reduced when it accepts electrons from the pigments, so the pigments function as reducing agents. This combination of oxidation and reduction goes hand in hand in a redox reaction because another must gain electrons that are lost by one element.

  9. Questions • what kinds of vitamin are considered as antioxidant • as VITAMIN C or E • write structural formula for resultants of reaction inside light sticks. • What is the ingredient of Chemiluminescence • Luminol

  10. Thank you!

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