objective: generation 5 poly (amidoamine) dendrimers are promising multipotent gene delivery vectors that provide favorable dna condensation properties; however, their high toxicity limits their applications. toxicity of pamam dendrimers depends on their type, generation and applied dosage in a way that lower generations (lower than g5 dendrimers) and anionic dendrimers have lower toxicity than...

We simultaneously measured the absorption and emission of single conjugated polymer poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) molecules in a poly(methyl methacrylate) (PMMA) matrix using near-critical xenon to enhance the photothermal contrast for direct absorption measurements. We directly measured the number of monomers and the quantum yield of single conjugated poly...

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...

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...