Three-dimensional direct-writing via photopolymerization based on triplet-triplet annihilation

作     者：Zhiye Wang Yusheng Zhang Yuming Su Cankun Zhang Cheng Wang 

作者机构：State Key Laboratory for Physical Chemistry of Solid SurfacesiChEMCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM)Xiamen 361005China 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2022年第65卷第11期

页      面：2283-2289页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

基　　金：supported by the National Key R&D Program of China (2021YFA1502500) the National Natural Science Foundation of China (22125502 and 22071207) 

主　　题：triplet-triplet annihilation photopolymerization 3D printing energy transfer 

摘      要：3D direct-writing via photopolymerization based on two-photon absorption(TPA) can achieve excellent out-of-plane *** key to this technology is a quadratic intensity dependence in photoexciting the TPA photosensitizers. Triplet-triplet annihilation(TTA) also has similar nonlinear light-intensity dependence. As a result, TTA can also generate spatially confined excitation near the beam focus. Combining the photopolymerization reaction with the TTA system composed of palladium porphyrin and diphenylanthracene, 3D direct-writing micro-fabrication based on photopolymerization and the TTAwas *** out-of-plane resolution can reach 10 μm under continuous-wave laser excitation. TTA-based 3D direct-writing technology does not need an expensive femtosecond pulsed laser, showing the potential of a next-generation 3D printing technology.