物理化学学报2026，Vol.42Issue(3)：149-158,10.DOI:10.1016/j.actphy.2025.100198
用于可扩展和高分辨率隐形印刷的磷光碳纳米点油墨
Phosphorescent carbon nanodot inks for scalable and high-resolution invisible printing
摘要
Abstract
Phosphorescent inks based on carbon nanodots(CNDs)offer an environmentally friendly and low-cost alternative for persistent visibility and time-delayed information retrieval.However,current matrix-dependent phosphorescent CNDs suffer from poor processability and limited substrate compatibility,hindering their application in scalable,high-resolution invisible printing.Here,we report water-soluble phosphorescent CND inks that enable high-resolution,environmentally stable,and invisible printing.The triplet excitons in CNDs are stabilized by spatial confinement during printing,resulting in bright and long-lived phosphorescence.The phosphorescent CND inks enable invisible yet high-fidelity printing of complex textual patterns with micrometer resolution(2480×3508 dpi,～100 μm feature size),supporting font sizes down to 5 pt and line widths as thin as 0.05 pt across five types of paper substrates.The printed patterns exhibit over 98.7%accuracy across approximately 8.7 million pixels,demonstrating excellent fidelity.Based on these excellent invisible printing properties,a 200-page wordless book using phosphorescent CND inks was demonstrated.This work presents a scalable,low-cost,and high-resolution platform for phosphorescent ink printing,marking a significant advance in invisible printing technology.关键词
碳纳米点/磷光油墨/隐形印刷/高分辨率/可扩展Key words
Carbon nanodots/Phosphorescent inks/Invisible printing/High-resolution/Scalable分类
化学化工引用本文复制引用
龙燕,赵文博,曹庆,李翔宇,李付奎,胡宴伟,宋世玉,刘凯凯..用于可扩展和高分辨率隐形印刷的磷光碳纳米点油墨[J].物理化学学报,2026,42(3):149-158,10.基金项目
国家自然科学基金(12474413,12274378,12504485) （12474413,12274378,12504485）
中国博士后科学基金(BX20240337,2025M773431,2025M773392)及河南省重点研发与推广专项(252102231055)资助 （BX20240337,2025M773431,2025M773392）
