Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Proc Natl Acad Sci U S A. 2013 Mar 26;110(13):4923-8. doi: 10.1073/pnas.1221824110. Epub 2013 Mar 11.
We report the synthesis and characterization of covalent organic frameworks (COFs) incorporating thiophene-based building blocks. We show that these are amenable to reticular synthesis, and that bent ditopic monomers, such as 2,5-thiophenediboronic acid, are defect-prone building blocks that are susceptible to synthetic variations during COF synthesis. The synthesis and characterization of an unusual charge transfer complex between thieno[3,2-b]thiophene-2,5-diboronic acid and tetracyanoquinodimethane enabled by the unique COF architecture is also presented. Together, these results delineate important synthetic advances toward the implementation of COFs in electronic devices.
我们报告了包含噻吩基构筑单元的共价有机框架（COFs）的合成与表征。我们表明，这些 COFs 适合于网状合成，并且像 2,5-噻吩二硼酸这样的弯曲双位点单体是有缺陷的构筑单元，在 COF 合成过程中容易受到合成变化的影响。通过独特的 COF 结构，还展示了噻吩并[3,2-b]噻吩-2,5-二硼酸和四氰基对醌二甲烷之间形成的一种不寻常的电荷转移配合物的合成与表征。这些结果共同描绘了在电子器件中实现 COFs 的重要合成进展。
