Regensburg 2022 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

CPP: Fachverband Chemische Physik und Polymerphysik

CPP 8: Focus Session: Photonic Structures from Polymer and Colloidal Self-Assembly

CPP 8.3: Hauptvortrag

Montag, 5. September 2022, 15:45–16:15, H38

Self-assembled photonic pigments from bottlebrush block copolymers — •Richard Parker, Tianheng Zhao, Zhen Wang, Clement Chan, and Silvia Vignolini — Yusuf Hamied Department of Chemistry, University of Cambridge, United Kingdom

The self-assembly of bottlebrush block copolymers (BBCPs) into photonic materials has drawn significant attention due to the flexibility and diversity of the building blocks that can be synthesised. In this talk we will introduce a robust strategy for the fabrication of hierarchical photonic pigments via the confined self-assembly of BBCPs within emulsified microdroplets. By utilising an amphiphilic BBCP and optimising the emulsification conditions, we will demonstrate the formation of structurally coloured particles with a correlated disordered structure (i.e. a photonic glass) and compare them to particles with a highly-ordered concentric lamellar structure (i.e. a 1D photonic crystal). The mechanisms behind these two different architectures will be proposed and methods to tune the reflected colour of the respective systems considered. Finally, the strengths and weaknesses of the two approaches will be summarised in terms of the optical properties of the particles, the scalability of the approach and their viability as real-world colorants.