Structural color, drawing inspiration from nature, offers sustainable, eco-friendly, and dynamic coloration properties that are challenging to achieve with traditional synthetic dyes. Bottlebrush block copolymer has garnered significant attention due to its rapid assembly characteristics into plethora nanoscale morphologies with large domain spacing conducive to vibrant photonic properties.

In this work, it was demonstrated that integrating cross-linking chemistry with out-of-equilibrium processing based on additive manufacturing allows for dynamic control of structural color across the visible light spectrum and creates color gradients using a single ink. This approach demonstrates the power of non-equilibrium processing in dynamically modulating self-assembled structures and their functional properties during additive manufacturing.