Park Tae Hyun, Yu Seunggun, Park Jeongok, Park Cheolmin
Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Norrköping, Sweden.
Insulation Materials Research Center, Korea Electrotechnology Research Institute, Changwon, Republic of Korea.
Sci Technol Adv Mater. 2023 Jan 4;24(1):2156256. doi: 10.1080/14686996.2022.2156256. eCollection 2023.
For changing environmental circumstances, interactive structural color (SC) observation is a promising strategy to store and express external information. SCs based on self-assembled block copolymer (BCP) photonic crystals have been a research focus due to their facile and diverse nanostructures relying on the volume ratio of blocks. Their unique nano-architectonics can reflect incident light due to constructive interference of the two different dielectric constituents. Their excellent ability to change nano-architectonics in response to external stimuli (i.e. humidity, temperature, pH, and mechanical force) allows for a programmable and stimuli-interactive BCP SC display. In this review, recent advances in programmable and stimuli-interactive SC displays with the 1-dimensional self-assembled BCP nano-architectonics are comprehensively discussed. First, this review focuses on the development of programmable BCP SCs that can store various information. Second, stimuli-interactive BCP SCs capable of responding reversibly to external stimuli are also addressed. Particularly, reversible BCP SC changes are suitable for rewritable displays and emerging human-interactive BCP SC displays that detect various human information through changes in electric signals with the simultaneous alteration of the BCP SCs. Based on previously reported literature, the current challenges in this research field are further discussed, and the perspective for future development is presented in terms of material, nano-architectonics, and process.
对于不断变化的环境情况而言，交互式结构色（SC）观测是存储和表达外部信息的一种很有前景的策略。基于自组装嵌段共聚物（BCP）光子晶体的结构色由于其依赖嵌段体积比而具有简便且多样的纳米结构，一直是研究热点。它们独特的纳米结构由于两种不同介电成分的相长干涉能够反射入射光。它们响应外部刺激（即湿度、温度、pH值和机械力）而改变纳米结构的出色能力，使得可编程且与刺激交互的BCP结构色显示成为可能。在这篇综述中，全面讨论了具有一维自组装BCP纳米结构的可编程且与刺激交互的结构色显示的最新进展。首先，本综述聚焦于能够存储各种信息的可编程BCP结构色的发展。其次，还探讨了能够对外部刺激做出可逆响应的与刺激交互的BCP结构色。特别地，可逆的BCP结构色变化适用于可重写显示以及新兴的人机交互BCP结构色显示，后者通过电信号变化检测各种人体信息，同时BCP结构色也会发生改变。基于先前报道的文献，进一步讨论了该研究领域当前面临的挑战，并从材料、纳米结构和工艺方面阐述了未来发展的前景。
