文献类型：期刊文献

英文题名：Polymerization-induced highly brilliant and color-recordable mechanochromic photonic gels for ink-free patterning

作者：Du, Yijun[1];Zeng, Junjian[1];Sun, Qiuhong[2];Yu, Siyi[2];Yang, Dongpeng[2];Huang, Shaoming[3]

机构：[1]Shaoxing Univ, Yuanpei Coll, Key Lab Green Chem & Pharmaceut Engn, Shaoxing 312000, Peoples R China;[2]Guangdong Univ Technol, Sch Mat & Energy, Guangzhou 510006, Peoples R China;[3]Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Sch Chem & Mat Sci, Hangzhou 310024, Peoples R China

年份：2025

卷号：679

起止页码：883

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001350732700001)、、EI(收录号：20244417299574)、Scopus(收录号：2-s2.0-85207579868)、WOS

基金：This work was financially supported by the National Natural Science Foundation of China (52302001 and 51920105004) , the Natural Sci-ence Foundation of Guangdong Province (2023A1515010063) , and Startup Foundation of Shaoxing University (13011001002/261) .

语种：英文

外文关键词：Brilliant structural color; Mechanochromic; Color-recordability; Photonic crystals; Pattern

外文摘要：Mechanochromic photonic crystals (MPCs) are extremely attractive since they can adjust their structural color by forces. However, the poor color saturation and color-recordability of conventional MPCs significantly limit their practical applications. Herein, a highly brilliant and color-recordable MPC gel (MPCG) has been fabricated by photopolymerizing the liquid photonic crystals with silica particles non-closely packed in acrylate, dichlorobenzene, and oleylamine. Photopolymerization induces elastic gradient non-close-packing structures and thus broad photonic bandgaps (>100 nm), resulting in 1) high color saturation despite possessing a small refractive index contrast (0.06), 2) remarkable mechanochromic properties, including a large wavelength tuning range (228 nm), fast responsiveness (8.8-10.3 nm/ms), and high sensitivity (4.4 nm/kPa), and 3) unconventional color-recordable properties. MPCGs were experimentally proved to be ideal rewritable papers for constructing multicolor and high-resolution patterns in an ink-free way, difficult for traditional MPC-based units. The unique working mechanism of polymerization-induced phase separation and thus continuous swelling and gelation, and precise design of materials and structures are the keys to MPCGs' characteristics. This study paves a new way for constructing advanced stimulus-responsive photonic structures and will promote their applications in printing, display, anti-counterfeiting, etc.