Difference between revisions of "Fluorination"

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== Definition ==
 
== Definition ==
 
Fluorination is the chemical process of adding the element fluorine into a molecule. Fluorine has atomic number 9 and is in group 17, the halogens.  Fluorination is a kind of halogenation.
 
Fluorination is the chemical process of adding the element fluorine into a molecule. Fluorine has atomic number 9 and is in group 17, the halogens.  Fluorination is a kind of halogenation.
[[image: PeriodicTable.PNG|This periodic table is from wikimedia commons and shows Fluorine's position at the top of the Halogens (group 17).]]
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[[image: PeriodicTable.PNG|650px|This periodic table is from wikimedia commons and shows Fluorine's position at the top of the Halogens (group 17).]]
  
 
== Applications ==
 
== Applications ==
* Fluorinating a surface or applying a fluorinated coating lowers the surface energy and makes the surface more hydrophobic. Desbief ''et. al.'' [reference] discuss this idea in terms of polymer coatings, "introduction of fluorine atoms substantially reduces the surface energy of the polymer film.
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* Fluorinating or applying a fluorinated coating to a surface lowers the surface energy and makes the surface more hydrophobic. Desbief ''et. al.'' [[Superhydrophobic Aluminum Surfaces by Deposition of Micelles of Fluorinated Block Copolymers|[3] ]] coat an aluminum surface with fluorinated block copolymers to make the aluminum more hydrophobic.
  
*Many companies make fluorinated plastic containers which are less permeable than simple HDPE containers.
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*Many companies make fluorinated plastic containers that are less permeable than plain HDPE containers.
 
**http://www.thecarycompany.com/containers/plastic_bottles/fluorination.html
 
**http://www.thecarycompany.com/containers/plastic_bottles/fluorination.html
 
**http://www.novapak.com/news/Articles/Fluorination.asp
 
**http://www.novapak.com/news/Articles/Fluorination.asp
  
*Pharmaceuticals
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*Lots of common pharmaceuticals are fluorinated. Fluorinating a pharmaceutical makes it more lipophilic, enhancing absorption of the drug [4]. Common fluorinated pharmaceuticals include Prozac, Paxil, Celebrex, and Lipitor [5]. The pros and cons of fluorinated drugs and their effects on the environment are a topic of debate.
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**http://www.slweb.org/ftrcfluorinatedpharm.html
  
 
== References ==
 
== References ==
[1] http://en.wikipedia.org/wiki/Halogenation
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[1] "Halogenation," ''Wikipedia'' (accessed Oct. 19, 2009). http://en.wikipedia.org/wiki/Halogenation
  
[2] http://www.merriam-webster.com/dictionary/fluorination
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[2] "Fluorination," ''The American Heritage Dictionary of the English Langage,'' Houghton Mifflin Company. 4th Ed. (2000). http://www.thefreedictionary.com/fluorination
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[3] Desbief, S., Grignard, B., Detrembleur, C., Rioboo, R., Vaillant, A., Seveno, D., Voue, M., De Coninck, J., Jonas, A.M., Jerome, C., Damman, P., and Lazzaroni, R. "Superhydrophobic Aluminum Surfaces by Deposition of Micelles of Fluorinated Block Copolymers," ''Langmuir'' (2009). doi: 10.1021/la902565y.
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[4] Ismail, F. "Important Fluorinated Drugs in Experimental and Clinical Use," ''Journal of Fluorine Chemistry'' '''118''', 27-33 (2002).
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[5] A Second Look. "Index of Fluorinated Pharmaceuticals," ''Fluoride Toxidity Reserach Collaborative'' (accessed Oct. 19, 2009). http://www.slweb.org/ftrcfluorinatedpharm.html

Latest revision as of 02:41, 20 October 2009

Definition

Fluorination is the chemical process of adding the element fluorine into a molecule. Fluorine has atomic number 9 and is in group 17, the halogens. Fluorination is a kind of halogenation. This periodic table is from wikimedia commons and shows Fluorine's position at the top of the Halogens (group 17).

Applications

  • Fluorinating or applying a fluorinated coating to a surface lowers the surface energy and makes the surface more hydrophobic. Desbief et. al. [3] coat an aluminum surface with fluorinated block copolymers to make the aluminum more hydrophobic.
  • Lots of common pharmaceuticals are fluorinated. Fluorinating a pharmaceutical makes it more lipophilic, enhancing absorption of the drug [4]. Common fluorinated pharmaceuticals include Prozac, Paxil, Celebrex, and Lipitor [5]. The pros and cons of fluorinated drugs and their effects on the environment are a topic of debate.

References

[1] "Halogenation," Wikipedia (accessed Oct. 19, 2009). http://en.wikipedia.org/wiki/Halogenation

[2] "Fluorination," The American Heritage Dictionary of the English Langage, Houghton Mifflin Company. 4th Ed. (2000). http://www.thefreedictionary.com/fluorination

[3] Desbief, S., Grignard, B., Detrembleur, C., Rioboo, R., Vaillant, A., Seveno, D., Voue, M., De Coninck, J., Jonas, A.M., Jerome, C., Damman, P., and Lazzaroni, R. "Superhydrophobic Aluminum Surfaces by Deposition of Micelles of Fluorinated Block Copolymers," Langmuir (2009). doi: 10.1021/la902565y.

[4] Ismail, F. "Important Fluorinated Drugs in Experimental and Clinical Use," Journal of Fluorine Chemistry 118, 27-33 (2002).

[5] A Second Look. "Index of Fluorinated Pharmaceuticals," Fluoride Toxidity Reserach Collaborative (accessed Oct. 19, 2009). http://www.slweb.org/ftrcfluorinatedpharm.html