Editing Polyene (section)

== Chemical and electrical properties ==
Polyenes tend to be more reactive than simpler alkenes. For example, polyene-containing [[triglyceride]]s are reactive towards atmospheric oxygen. [[Polyacetylene]], which partially oxidized or reduced, exhibits high electrical conductivity. Most [[conductive polymer]]s are polyenes, and many have [[conjugated system|conjugated]] structures. Poly(aza)acetylenes are readily prepared from [[pyridine]] precursors without the necessity of a controlled atmosphere, simply by [[ultraviolet]] irradiation of a mixture of pyridine and poly(4-vinyl) pyridine.{{citation needed|date=February 2024}} Recent research at the [[Weizmann Institute of Science|Weizmann Institute]] and [[Aix-Marseille University]] showed a clear transition between ionic and electronic conductivity with increasing UV dose over 30 hours.<ref>{{Cite journal |last1=Vaganova |first1=Evgenia |last2=Eliaz |first2=Dror |last3=Shimanovich |first3=Ulyana |last4=Leitus |first4=Gregory |last5=Aqad |first5=Emad |last6=Lokshin |first6=Vladimir |last7=Khodorkovsky |first7=Vladimir |date=January 2021 |title=Light-Induced Reactions within Poly(4-vinyl pyridine)/Pyridine Gels: The 1,6-Polyazaacetylene Oligomers Formation |journal=Molecules |language=en |volume=26 |issue=22 |pages=6925 |doi=10.3390/molecules26226925 |pmid=34834017 |pmc=8621047 |issn=1420-3049|doi-access=free }}</ref>