Accession Number : ADA256653


Title :   Poly(2,3-dihexylthieno(3,4-b)pyrazine). A New Processable Low Band-Gap Polyheterocycle


Descriptive Note : Technical rept.


Corporate Author : TEXAS UNIV AT ARLINGTON CENTER FOR ADVANCED POLYMER RESEARCH


Personal Author(s) : Pomerantz, Martin ; Rajeshwar, Krishnan ; Marynick, Dennis S ; Reynolds, John R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a256653.pdf


Report Date : Oct 1992


Pagination or Media Count : 9


Abstract : A new soluble, low band-gap polymer, poly(2,3-dihexylthieno3,4-B pyrazine), which is dark blue-black in the neutral state and which becomes transparent light yellow when doped has been prepared and studied. The preparation involves a multistep synthesis which involves condensation of 3,4- diaminothiophene with 7,8-tetradecanedione to produce 2,3-dihexylthieno3,4-B pyrazine which is polymerized with ferric chloride. Poly(2,3-dihexylthieno3,4-B pyrazine) has a doped film conductivity of 3.6 x 10-2 S cm-1 and a band-gap (film) of ca. 0.95 eV making it one of the lowest band-gap polymers prepared to date. Poly(2,3-dihexylthieno3,4-B pyrazine, Low Band-Gap, Conducting polymer, Processable.


Descriptors :   *CONDUCTIVITY , *POLYMERS , IONS , SYNTHESIS , LIGHT , CHLORIDES , CONDENSATION , BLUE(COLOR) , FILMS , ELECTRON TRANSPORT , NEUTRAL , PREPARATION


Subject Categories : Physical Chemistry
      Polymer Chemistry
      Electricity and Magnetism


Distribution Statement : APPROVED FOR PUBLIC RELEASE