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===Electrically conductive polymers=== Traditional conductive materials are [[inorganic]], especially [[metals]] such as [[copper]] and [[aluminum]] as well as many [[alloy]]s.{{citation needed|date=August 2022}} In 1862 [[Henry Letheby]] described [[polyaniline]], which was subsequently shown to be electrically conductive. Work on other polymeric organic materials began in earnest in the 1960s. For example in 1963, a derivative of tetraiodopyrrole was shown to exhibit conductivity of 1 S/cm (S = [[Siemens (unit)|Siemens]]).<ref>{{cite journal |title=Electronic Conduction in Polymers. I. The Chemical Structure of Polypyrrole |first1=R. |last1=McNeill |first2=R. |last2=Siudak |first3=J. H. |last3=Wardlaw |first4=D. E. |last4=Weiss |journal=[[Australian Journal of Chemistry|Aust. J. Chem.]] |year=1963 |volume=16 |issue=6 |pages=1056β1075 |doi=10.1071/CH9631056}}</ref> In 1977, it was discovered that oxidation enhanced the conductivity of [[polyacetylene]]. The 2000 Nobel Prize in Chemistry was awarded to [[Alan J. Heeger]], [[Alan G. MacDiarmid]], and [[Hideki Shirakawa]] jointly for their work on polyacetylene and related conductive polymers.<ref>{{cite web |title=The Nobel Prize in Chemistry 2000 |url=https://www.nobelprize.org/nobel_prizes/chemistry/laureates/2000/ |publisher=Nobelprize.org. Nobel Media}}</ref> Many families of electrically conducting polymers have been identified including [[polythiophene]], [[polyphenylene sulfide]], and others. J.E. Lilienfeld<ref name=patent>{{Cite patent|country=CA|number=272437|title= Electric current control mechanism|pubdate=1927-07-19|inventor1-last=Lilienfeld|inventor1-first=Julius Edgar}}</ref> first proposed the [[field-effect transistor]] in 1930, but the first OFET was not reported until 1987, when Koezuka et al. constructed one using [[Polythiophene]]<ref name = Koezuka1988>{{cite journal |title=Field-effect transistor with polythiophene thin film |journal=Synthetic Metals |volume=18 |issue=1β3 |year=1987 |pages=699β704 |doi=10.1016/0379-6779(87)90964-7 |last1=Koezuka |first1=H. |last2=Tsumura |first2=A. |last3=Ando |first3=T.}}</ref> which shows extremely high conductivity. Other [[conductive polymer]]s have been shown to act as semiconductors, and newly synthesized and characterized compounds are reported weekly in prominent research journals. Many review articles exist documenting the development of these [[Chemical substance|materials]].<ref name=sc>{{cite journal |type=free download |journal=Sci. Technol. Adv. Mater. |volume=10 |year=2009 |page=024314 |doi=10.1088/1468-6996/10/2/024314 |pmid=27877287 |title=Organic field-effect transistors using single crystals |bibcode=2009STAdM..10b4314H |issue=2 |last1=Hasegawa |first1=Tatsuo |last2=Takeya |first2=Jun|pmc=5090444 }}</ref><ref name=pc>{{cite journal |type=free download |journal=Sci. Technol. Adv. Mater. |volume=10 |year=2009 |page=024313 |doi=10.1088/1468-6996/10/2/024313 |pmid=27877286 |title=Organic semiconductors for organic field-effect transistors |bibcode=2009STAdM..10b4313Y |issue=2 |last1=Yamashita |first1=Yoshiro|pmc=5090443 }}</ref><ref>{{cite journal |journal=Adv. Mater. |volume=14 |year=2002 |page=99 |doi=10.1002/1521-4095(20020116)14:2<99::AID-ADMA99>3.0.CO;2-9 |title=Organic Thin Film Transistors for Large Area Electronics |url=https://www.researchgate.net/publication/233927802 |issue=2 |last1=Dimitrakopoulos |first1=C.D. |last2=Malenfant |first2=P.R.L.|bibcode=2002AdM....14...99D }}</ref><ref>{{cite journal |journal=Mater. Today |volume=7 |year=2004 |page=20 |doi=10.1016/S1369-7021(04)00398-0 |title=Organic thin film transistors |issue=9 |last1=Reese |first1=Colin |last2=Roberts |first2=Mark |last3=Ling |first3=Mang-Mang |last4=Bao |first4=Zhenan|doi-access=free }}</ref><ref name=hk>{{cite journal |journal=Chem. Soc. Rev. |volume=39 |year=2010 |doi=10.1039/B909902F |pmid=20396828 |title=Organic thin-film transistors |last1=Klauk |first1=Hagen |issue=7|pages=2643β66 }}</ref> In 1987, the first organic [[diode]] was produced at [[Eastman Kodak]] by [[Ching W. Tang]] and [[Steven Van Slyke]].<ref>{{Cite journal |doi=10.1557/mrs.2012.125 |title=Energy efficiency with organic electronics: Ching W. Tang revisits his days at Kodak |journal=MRS Bulletin |volume=37 |issue=6 |pages=552β553 |year=2012 |last1=Forrest |first1=S. |bibcode=2012MRSBu..37..552F |url=http://www.mrs.org/06-2012-interview/|doi-access=free }}</ref>
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