Cyclopentadithiophene type metal organic polymer containing ferrocene, preparation method and application of cyclopentadithiophene type metal organic polymer, and composite thermoelectric film

Abstract

The invention discloses a ferrocene-containing cyclopentadithiophene type metal organic polymer, a preparation method and application thereof, and a composite thermoelectric film. The structural general formula of the metal organic polymer is shown in the specification, and R is selected from any one of thienyl, 3, 4-difluorothienyl, bithienyl, 4, 8-bis (5-(2-ethylhexyl) thiophene-2-yl) benzo [1, 2-b: 4, 5-b '] bithienyl and 4, 8-bis (5-(2-ethylhexyl-4-fluoro) thiophene-2-yl) benzo [1, 2-b: 4, 5-b'] bithienyl. In the metal organic polymer, a ferrocene functional group and a pi conjugated system have certain interaction, so that the conductivity of the material is improved. The composite thermoelectric film containing the polymer and the SWCNT provided by the invention has relatively high Seebeck coefficient and conductivity, and the composite thermoelectric film has excellent thermoelectric performance. 本发明公开含有二茂铁的环戊二噻吩型金属有机聚合物及其制备方法与应用、复合热电薄膜。该金属有机聚合物的结构通式如下式所示：其中，R选自噻吩基、3,4‑二氟噻吩基、联二噻吩基、4,8‑双(5‑(2‑乙基己基)噻吩‑2‑基)苯并[1,2‑b：4,5‑b']二噻吩基、4,8‑双(5‑(2‑乙基己基‑4‑氟)噻吩‑2‑基)苯并[1,2‑b：4,5‑b']二噻吩基结构中的任意一种。该金属有机聚合物中，二茂铁官能团与π共轭体系之间具有一定的相互作用，从而提高了材料的导电性。本发明提供的含该聚合物和SWCNT的复合热电薄膜具有较高的Seebeck系数和导电率，复合热电薄膜具有优异的热电性能。