Inside Cover, Volume 51, Issue 5


original image

Synthesis, characterization, and transistor applications of PBTSB and PBTFN polymers containing stilbene and fumaronitrile moieties are presented on page 1029 by Dong-Yu Kim and colleagues. The cover image depicts the polarized optical microscopy (POM, micrometer scale), atomic force microscopy (AFM, nanometer scale), and time-dependent density functional theory (TDDFT, molecular scale) calculation images of PBTFN. The crystalline phase and self-assembly of PBTFN are attributed to the bithiophenefumaronitrile (donor-acceptor) intermolecular interaction. Electron transport is improved due to the well-ordered molecular packing in the fibrillar structure after thermal annealing.