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.

将胶体颗粒可预测地组装为可编程超结构，是化学与材料科学领域一项兼具挑战性与重要性的核心研究课题。本研究开发了一种可行的磁导向组装策略，以固液型Janus（Janus）构筑基元为原料，成功构建了一系列类分子光子晶体团簇颗粒，其构型涵盖点、线、三角形、四面体以及三角双锥结构。这类集成了光子带隙、荧光与磁学信息的多功能复合型类分子结构团簇，可为各类稳健的分级微结构颗粒材料的制备提供全新且极具应用前景的技术途径。