Charge transport in liquid crystal network of terthiophene-siloxane block molecules

Abstract

We report that mesogens consisting of a terthiophene core and discrete oligodimethylsiloxane side-chains terminated by acrylate units can be photopolymerized in the columnar phase with retention of nanoscale order and charge transport capabilities.

Stimuli‐Responsive Nanostructured Viologen‐Siloxane Materials for Controllable Conductivity

“…[11][12][13][14] An effective strategy to create versatile nanostructured organic materials is based on sidechain engineering. [15][16][17] In the past, discrete oligodimethylsiloxane (oDMS, Ð < 1.00001) have been introduced in end-functionalized molecules, which self-assemble into 2D materials. [18,19] These phase-separated structures are exploited to translate molecular events to a macromolecular level, exemplified by diphenylanthracene-based molecules that exhibit a hundredfold increase in photon-upconversion in an ordered material compared to its disordered counterpart.…”

Trade-off between processability and device performance in donor–acceptor semiconductors revealed using discrete siloxane side chains

“…18,20 Recently, our group and others have shown that discrete oDMS (Ð o 1.00001) can greatly enhance the phase separation and nanoscale ordering of materials. [21][22][23][24] Yet, to the best of our knowledge, D-A polymers with longer and/or branched oDMS side chains have not been reported. In previous years, we have reported on the synthesis of elongated and branched oDMS as side chains for supramolecular polymers.…”

Ionic electroactive PEDOT:PSS/liquid-crystalline polymer electrolyte actuators: photopolymerization of zwitterionic columnar liquid crystals complexed with a protic ionic liquid

“…In addition, the anisotropic LC nanostructures can endow the materials with excellent mechanical properties. Nanostructured materials through polymerization of reactive liquid crystals have enormous potential in various applications [16][17][18] involving electron transport, [19][20][21] ion transport, [22][23][24][25][26][27] electrochromism, 28 thermal conductivity, 29 molecular absorption and separation, [30][31][32][33][34][35] catalysts, 36 and actuator and shape-memory materials. [37][38][39][40][41][42] Our intention is to develop a low-voltage driven iEAP actuator that exhibits large strain and high force by designing photopolymerized LC membranes with channels of ionic liquids.…”