Abstract
A new method for fabricating conjugated polymer films was developed using electrochemical polymerization in liquid crystals and magnetic orientation. A uniaxial main chain orientation and a crosslinked network structure were achieved with this method. By employing eight types of monomers, the influence of the crosslinking for the film was investigated. The crosslinking was found to improve the solvent resistance of the conjugated polymer films. This new method is expected to be useful in various applications, such as high-powered organic electronic devices with durability.
Highlights
Due to their unique chemical structure, conjugated polymers can demonstrate inorganic semiconductor-like properties and are regarded as a promising material for applications
We found a new way to fabricate conjugated polymer films whose molecular orientation can be controlled with a magnetic field in the polymerization process
Plausible uncrosslinked and crosslinked forms are described in the polymerization of BT and d(BT), as an example (Figure 1)
Summary
Due to their unique chemical structure, conjugated polymers can demonstrate inorganic semiconductor-like properties and are regarded as a promising material for applications. The electronic devices based on the polymers do not exhibit anisotropic optical or electrical performances To address this concern, many groups have developed technologies to control the arrangement of conjugated polymers [13,14,15,16]. In this study, using electrochemical polymerization in LCs, a new method was developed to fabricate conjugated polymer films having a uniaxial molecular orientation and a crosslinked network structure. Both the uniaxial molecular orientation and preparation of crosslinked network structures allow the conjugated polymer films to show anisotropic optical properties and durability, which may endow organic electronic devices with high performance. SchSecmheem1e. 1M. oMnoonmoemrseresmemplpolyoeydedfofrorththeeeelelecctrtroocchheemmiiccaall polymerizatioonn iinnlilqiquuididcrcyrystsatlasl,sa, nadndmmoloecleucluarlasrtrsutcrtuucrteusreosf of liquliiqducidrycsrtyaslta4l-c4y-caynaon-o4-′-4h-ehxeyxlyblibpihpehnenyyl l(6(6CCBB))aannddtthhee ssuuppppoorrttiinngg ssaalltttteettrraabbuutytylalammmmonoinuimumpeprechrclohrlaotreat(eTB(TABPA).P)
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