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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 53: Responsive and Adaptive Systems II
CPP 53.5: Vortrag
Freitag, 22. März 2024, 12:45–13:00, H 0107
Self-assembled photonic pigments from bottlebrush block copolymers — •Ruiting Li1, Zhen Wang2, Richard Parker2, and Silvia Vignolini1,2 — 1Department of Sustainable and Bio-inspired Materials, Max-Planck Institute of Colloids and Interfaces, Potsdam, 14476, Germany — 2Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
Bottlebrush block copolymers (BBCPs) have emerged as a versatile material for constructing photonic materials. In contrast to alternative photonic materials, BBCPs offers several distinct advantages, including: rapid assembly kinetics, ordering over macroscopic dimensions, and the capacity to accommodate substantial functionality.
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 optimising the BBCP composition and the emulsification conditions, we demonstrate that microparticles with a well-resolved concentric lamellar structure can be formed. The fundamental optical response (i.e. colour) is determined via the BBCP molecular weight, however we will show that by exploiting new macromonomers it is possible to produce "photonic pigments" that are mechanochromic, unlocking potential application as ultrasensitive pressure sensors.
Keywords: self-assembly; photonics; BBCPs; confined self-assembly