Magnetic-Directed Assembly from Janus Building Blocks to Multiplex Molecular-Analogue Photonic Crystal Structures

The predictable assembly of colloidal
particles into a programmable
superstructure is a challenging and vital task in chemistry and materials
science. In this work, we develop an available magnetic-directed assembly
strategy to construct a series of molecular-analogue photonic crystal
cluster particles involving dot, line, triangle, tetrahedron, and
triangular bipyramid configurations from solid–liquid Janus
building blocks. These versatile multiplex molecular-analogue structural
clusters containing photonic band gap, fluorescent, and magnetic information
can open a new promising access to a variety of robust hierarchical
microstructural particle materials.