Amphiphilic Design of a Discotic Liquid‐Crystalline Molecule for Dipole Manipulation: Hierarchical Columnar Assemblies with a 2D Superlattice Structure

Abstract

Ein flüssigkristallines Dibenzophenazin, das zur Erzeugung eines großen Dipolmoments in eine gestapelte Kopf‐Kopf‐Anordnung gezwungen wurde, behielt diese Anordnung auch bei der Selbstorganisation in ein hexagonales 2D‐Übergitter bei (siehe Bild). Auf diese Weise waren der Nettodipol und die Kontaktfläche zwischen unvermischbaren Seitenketten minimiert. Die homöotrope Ausrichtung des Selbstorganisats auf Glas führte zu einem gerichteten Ladungstransport.

Design amphiphilic dipolar π-systems for stimuli-responsive luminescent materials using metastable states

“…The p-conjugated molecule can adopt a segregated solid structure by aggregating its hydrophobic and hydrophilic moieties separately (Fig. 1a) [22][23][24] . The segregated structure would force the molecules to align in the same direction, thereby generating a conflict between the side-chain aggregation and dipolar stabilization of the core 22 .…”

“…1a) [22][23][24] . The segregated structure would force the molecules to align in the same direction, thereby generating a conflict between the side-chain aggregation and dipolar stabilization of the core 22 . Consequently, this designed metastable aggregate structure could be easily transformed to more stable structures with variable luminescence.…”

Evaluation-oriented exploration of photo energy conversion systems: from fundamental optoelectronics and material screening to the combination with data science

“…In addition to an increased sensitivity of the resonant cavity, the direction of the electric field inside is fixed. Based on this property, anisotropic photoconductivity and mobility along various sample directions (parallel and perpendicular to a film and the xyz axes of a crystal) are easily evaluated with a high angular resolution [50][51][52][53][54][55][56][57][58][59][60][61][62].…”

“…Owing to the electrodeless measurement of the local motions of charge carriers, laser-flash TRMC has been extensively used in liquid crystalline materials [55,[70][71][72], self-assembled nanostructures [50,60,[73][74][75][76][77][78][79][80], microcrystals [52,56,[81][82][83][84], and liquids/gels [85][86][87][88], which are often associated with difficulties in preparing high-quality films suitable for device characterization, such as a fieldeffect transistor (FET). Although one can prepare a smooth film of a conjugated polymer, the φ value of its pristine film is very small (10 −5 -10 −3 ) and unable to be determined solely by TRMC measurements.…”

Acid‐Responsive N‐Heteroacene‐Based Material Showing Multi‐Emission Colors

“…polymers [35] and discotic LC materials. [36][37][38] However,t ot he best of my knowledge,t here is no report on the intrinsic electronic ands timuli-responsive properties of dibenzophenazine derivatives. The introduction of two long racemic alkoxyc hains to the p-conjugated framework confers high solubility in various organic solvents, which can be easy to preparea sd ropcast films.…”