光致聚合物
聚二乙炔
聚合物
热的
材料科学
热稳定性
聚合
纳米颗粒
羧酸盐
化学工程
光化学
纳米技术
化学
有机化学
复合材料
物理
气象学
工程类
作者
Jialing Tan,Wenwen Liu,Jiayin Liu,Fei Liu,Yunjie Yin,Chaoxia Wang
标识
DOI:10.1002/adsu.202300284
摘要
Abstract Polydiacetylenes (PDAs) are a family of highly conjugated polymers that generate optical response sensitively if exposed to stimuli, the color would change from blue to red. PDAs with reusability and color reversibility are at the central of current research efforts generously. They enhance the electrostatic interaction between cations and the negatively charged carboxylate head groups to increase the rigidity and decrease the energy barrier by introducing Ni 2+ into the side chains of PDAs. The amphiphilic 10,12‐pentacosadiynoic acid (PCDA) molecules with the hydrophilic and hydrophobic group are dispersed into Ni 2+ aqueous solution and self‐assembled in situ into nanoparticles. Transferring the solution onto a paper base to yield a precisely controlled thickness of PDAs thermal paper. The thermal paper undergoes UV‐induced topological chemical polymerization and further cross‐linking to form stably blue. Because of the reduced energy barrier, red thermal paper after thermal stimulation can undergo color reduction under UV light irradiation. Increasing the photopolymerization time from 5 s to 600 s leads to the rising of the color change temperature from approximately 76.4 °C to 105.4 °C. The polydiacetylene/Ni 2+ (PDA/Ni 2+ ) thermal paper can be available for green printing, thermal history recording, and temperature visualization.
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