Polyene

You don't need to be Editor-In-Chief to add or edit content to WikiDoc. You can begin to add to or edit text on this WikiDoc page by clicking on the edit button at the top of this page. Next enter or edit the information that you would like to appear here. Once you are done editing, scroll down and click the Save page button at the bottom of the page.

Polyenes are poly-unsaturated organic compounds that contain one or more sequences of alternating double and single carbon-carbon bonds. These double carbon-carbon bonds interact in a process known as conjugation, which results in an overall lower energy state of the molecule.

Organic compounds with two carbon-carbon double bonds are dienes; those with three such double bonds are trienes; those with four are tetraenes, etc.

Normally carbon-carbon double bonds which are not conjugated or only conjugated with only one or two other carbon-carbon double bonds have high enough energy that they absorb in the ultraviolet region of a spectrum, but the absorption energy state of polyenes with numerous conjugated double bonds can be lowered such that they enter the visible region of the spectrum, resulting in compounds which are colored yellow or other colors.

Many fatty acids are polyenes, and many dyes contain linear polyenes. Other examples of polyene compounds include beta-carotene, which is yellow to orange colored depending on concentration, and polyene antimycotics, some of which are yellow colored.ar:بوليينth:พอลิอีน