Regioregular pyridal[2,1,3]thiadiazole π-conjugated copolymers for organic semiconductors
申请人:Bazan Guillermo C.
公开号:US09293708B2
公开(公告)日:2016-03-22
A method of regioselectively preparing a pyridine-containing compound is provided. In particular embodiments, the method includes reacting halogen-functionalized pyridal[2,1,3]thiadiazole with organotin-functionalized cyclopenta[2,1-b:3,4-b′]dithiophene or organotin-functionalized indaceno[1,2-b:5,6-b′]dithiophene. Also provided is a method of preparing a polymer. The method includes regioselectively preparing a monomer that includes a pyridal[2,1,3]thiadiazole unit; and reacting the monomer to produce a polymer that includes a regioregular conjugated backbone section, wherein the section includes a repeat unit containing the pyridal[2,1,3]thiadiazole unit. A polymer that includes a regioregular conjugated backbone section, and electronic devices that include the polymer, are also provided.
Regioregular yet near-amorphous indacenodithiophene-based polymers exhibit superior deformability as well as high mobility values up to 1.67 cm2 V−1 s−1.
on the relevant basic physical properties and device function by controlling the regiochemistry of the cyclopenta[1,2‐b:5,4‐b′]dithiophene‐fluorobenzo[c][1,2,5]thiadiazole polymer (hereafter referred to as the CDT‐FBT polymer), two polymers, the regiorandom polymer (RA) and regioregular version (RR), respectively, are synthesized and characterized. In addition, an efficient route for synthesizing a key
通过控制环戊五[1,2-b:5,4-b']二噻吩-氟苯并[c] [1,2,5]噻二唑聚合物的区域化学来了解对相关基本物理性质和器件功能的影响(以下称为CDT-FBT聚合物),分别合成和表征了两种聚合物,区域无规聚合物(RA)和区域规则型(RR)。此外,讨论了使用各种合成范围合成RR的关键单体并优化反应条件的有效途径。尽管RA表现出与RR类似的光学,电化学和形态学特性,但它显示出更好的场效应晶体管(FET)性能。出人意料的是,通过在纳米沟槽基材上采用毛细管介导的三明治浇铸工艺,空前的迁移率为17.8 cm 2对于基于RA的FET,获得 V -1 s -1;该迁移率值几乎是相应的基于RR的FET迁移率值的两倍。这项研究首次挑战以前报道的结果,因为高载流子迁移率与主链区域规则性诱导的高聚合物有序度有关。