0000000000424406
AUTHOR
R. Zentel
Electroactive Liquid Crystalline Polymers ☆
As with low molecular mass liquid crystals, the polymeric liquid crystalline compounds show many possibilities for interaction with electrical fields. Charge transport via the aromatic cores allows the construction of light emitting devices, field effect transistors and photovoltaic cells. The order of the liquid crystalline phases helps to improve intramolecular charge transfer and the mobility allows easy alignment. Liquid crystalline polymers with ferroelectric phases can be used in fast switching optical devices. Their unique switching mechanism proceeds under reduced interaction with the polymer chains. The combination of liquid crystallinity with elastomer networks leads to electromec…
Towards Plastic Electronics: Patterning Semiconducting Polymers by Nanoimprint Lithography
The direct patterning of functional semiconducting polymers (see Figure) has been achieved with a nanoimprint lithography technique. The room‐temperature process described is time‐saving as repeated temperature cycling is not required. In addition, due to the direct patterning approach the need for further processing steps (plasma treatment) to pattern the underlying semiconducting material is eliminated.
Control of mesogen configuration in colloids of liquid crystalline polymers
We report on a method to chemically predetermine the surface anchoring of mesogens in liquid crystalline colloids formed by different types of dispersion polymerization, and hence to achieve control over the mesogen configuration in such colloids. The surface anchoring is controlled by the chemical linkage of the polymers forming the colloids to the surfactants stabilizing the colloids towards the dispergent. We find that the hydroxypropyl cellulose used in conventional dispersion poylmerization induces parallel mesogen surface anchoring that in turn leads to bipolar director-field configurations, while a methacrylate terminated polysiloxane stabilizer, which is used in nonpolar dispersion …
CCDC 635327: Experimental Crystal Structure Determination
Related Article: R.Davis, R.Berger, R.Zentel|2007|Adv.Mater.|19|3878|doi:10.1002/adma.200701057
CCDC 844943: Experimental Crystal Structure Determination
Related Article: Jin-Kyun Lee, M.C.Gwinner, R.Berger, C.Newby, R.Zentel, R.H.Friend, H.Sirringhaus, C.K.Ober|2011|J.Am.Chem.Soc.|133|9949|doi:10.1021/ja201485p
CCDC 781606: Experimental Crystal Structure Determination
Related Article: J.-U.Kim, D.Schollmeyer, M.Brehmer, R.Zentel|2011|J.Colloid Interface Sci.|357|428|doi:10.1016/j.jcis.2011.02.006
CCDC 151383: Experimental Crystal Structure Determination
Related Article: P.Deindorfer, T.Geiger, D.Schollmeyer, Jian Hui Ye, R.Zentel|2006|J.Mater.Chem.|16|351|doi:10.1039/b510474b