1 research outputs found
Synthesis and Characterization of a Pyromellitic Diimide-Based Polymer with C- and N-Main Chain Links: Matrix for Solution-Processable n-Channel Field-Effect Transistors
A highly soluble pyromellitic diimide-based polymer was
obtained
through imidization polymerization. The novel architecture features
diimide subunits linked alternately at 3,6 and <i>N</i>,<i>N</i>′ positions. The polymer is highly transparent in
the near-ultraviolet–visible regions. Smooth and uniform thin-films
were obtained through spin-coating even after blending the polymer
with PCBM in 1:9 polymer/PCBM weight ratio. While the polymer itself
has modest electron mobility in typical bottom-gate top-contact OFETs,
an electron mobility of 3 × 10<sup>–3</sup> cm<sup>2</sup> V<sup>–1</sup> s<sup>–1</sup> was achieved for the
blend, which increased to 10<sup>–2</sup> cm<sup>2</sup> V<sup>–1</sup> s<sup>–1</sup> on exposure to propylamine.
Thus, polyimides are demonstrated as promising binder materials for
solution-processable n-channel semiconductor blends, of which very
few examples are known