Dynamic patterning of soft materials in a fully reversible and programmable manner with light enables applications in anti-counterfeiting, displays and labelling technology. However, this is a formidable challenge due to the lack of suitable chiral molecular photoswitches. Here, we report the development of a unique intrinsic chiral photoswitch with broad chirality modulation to achieve digitally controllable, selectable and extractable multiple stable reflection states. An anti-counterfeiting technique, embedded with diverse microstructures, featuring colour-tunability, erasability, reversibility, multi-stability and viewing-angle dependency of pre-recorded patterns, is established with these photoresponsive superstructures. This strategy allows dynamic helical transformation from the molecular and supramolecular to the macroscopic level using light-activated intrinsic chirality, demonstrating the practicality of photoprogramming photonics.

利用光以完全可逆和可编程的方式对软材料进行动态图案化，可应用于防伪、展示和标签技术。然而，由于缺乏合适的手性分子光开关，这是一个巨大的挑战。在这里，我们报告了一种具有广泛手性调制的独特本征手性光开关的开发，以实现数字可控、可选择和可提取的多种稳定反射状态。利用这些光响应超结构，建立了一种嵌入多种微结构的防伪技术，具有颜色可调性、可擦除性、可逆性、多稳定性和预先记录图案的视角依赖性。