Publications by authors named "B F M De Waal"

Spontaneous phase separation of materials is a powerful strategy to generate highly defined 2D nanomorphologies with novel properties and functions. Exemplary are such morphologies in block copolymers or amphiphilic systems, whose formation can be well predicted based on parameters such as volume fraction and shape factor. In contrast, the formation of 2D nanomorphologies is currently unpredictable in materials perfectly defined at the molecular level, in which crystallinity plays a significant role.

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Article Synopsis
  • Researchers explored how to manipulate chiroptical properties in bulk materials by altering the formation of chiral nanostructures using oligodimethylsiloxane-helicene-pyrene molecules with different lengths of DMS.
  • They discovered that in bulk, these materials self-assemble into 2D structures due to phase segregation, leading to significant differences in properties between racemic (mixed) and enantiopure (pure) forms, as well as a substantial increase in circularly polarized luminescence compared to solution state.
  • The findings indicate that tailoring the length of DMS chains influences the emission characteristics, paving the way for new uses in optoelectronics and communication technologies by blending chiroptical materials
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Donor-acceptor polymeric semiconductors are crucial for state-of-the-art applications, such as electronic skin mimics. The processability, and thus solubility, of these polymers in benign solvents is critical and can be improved through side chain engineering. Nevertheless, the impact of novel side chains on backbone orientation and emerging device properties often remains to be elucidated.

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Supramolecular polymers display interesting optoelectronic properties and, thus, deploy multiple applications based on their molecular arrangement. However, controlling supramolecular interactions to achieve a desirable molecular organization is not straightforward. Over the past decade, light-matter strong coupling has emerged as a new tool for modifying chemical and material properties.

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Spontaneous phase separation is a promising strategy for the development of novel electronic materials, as the resulting well-defined morphologies generally exhibit enhanced conductivity. Making these structures adaptive to external stimuli is challenging, yet crucial as multistate reconfigurable switching is essential for neuromorphic materials. Here, a modular and scalable approach is presented to obtain switchable phase-separated viologen-siloxane nanostructures with sub-5 nm features.

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