the research in new organic π-conjugated molecules with specific properties has become one of the most interesting topics in fields of materials chemistry. these materials are promising for optoelectronic device technology such as solar cells. on the other hand, the use of low band gap materials is a viable method for better harvesting of the solar spectrum and increasing its efficiency. the co...

Introduction Aromatic stacking of π-conjugated planar molecules leads to the exhibition of unique chemical and physical properties. Discotic liquid crystals are, for example, columnar assembly of aromatic compounds with long alkyl chains. Organic electroconductive materials involve alternative charge-transfer stacking of electron-donating and -accepting π-conjugated compounds. Whereas such infi...

This short review article summarizes recent progress in research on various stimuli-responsive circularly polarized luminescence (CPL) properties derived from π-conjugated molecules and related materials. As representative examples, assembled structures of chiral π-conjugated polymers and molecules showed tunable CPL resulting from the enhancement of chirality induction by aggregation. Fascinat...

We review the recent progress in the field of helically assembled π-conjugated polymers, focusing on aromatic conjugated polymers with interchain helical π-stacking that exhibit circularly polarized luminescence (CPL). In Part 1, we discuss optically active polymers with white-colored CPL and the amplification of the circular polarization through liquid crystallinity. In Part 2, we focus on the...

The elucidation of new structure–property relationships in π-conjugated molecules bearing quinoidal moieties is relevance organic electronics applications and as models doped conducting polymers.

Chirale π-konjugierte Nanosäulenmoleküle auf der Basis von Naphthodithiophen-Diimid zeichnen sich durch eine starre Säulenform und Fülle einzigartiger optischer chiraler Eigenschaften aus, die sie zu idealen Bausteinen für den Aufbau wichtiger supramolekularer 2D-Architekturen machen. Einzelheiten dieser Studien werden im Forschungsartikel Mathieu Linares, Hui-Jun Zhang, Jianbin Lin et al. S. 2...

Conjugated polymers encompassing delocalized π-electrons in their backbones exhibit high photoabsorption and efficient charge carrier transport through the intermolecular π-π stacking suitable for organic photovoltaics (OPV). By contrast, small molecules such as [1]benzothieno[3,2-b][1]benzothiophene (BTBT) derivatives, which demonstrates field-effect transistor hole mobilities owing to 2-dimen...