Realizing Multicolor, 3D‐Printable Ultralong Room Temperature Phosphorescence PLA Materials via Regulating the π‐System of Aryl‐Annulated Carbazoles
Abstract
Abstract Bio‐based degradable organic ultralong room temperature phosphorescence (URTP) polymers should become a mainstream research topic in the future. Meanwhile, shaping URTP polymers into 3D‐printable materials is of great significance for applications in optical and optoelectronic fields. Nevertheless, the fabrication of full‐color, ultralong, bright, and 3D printable bio‐based RTP polymer materials using a single‐dopant component still faces significant challenges. Here, by regulating the π‐system of aryl‐annulated carbazoles, the triplet energy levels are successfully regulated which enabled wavelength‐tunable RTP emissions spanning from blue to red afterglow (440 – 628 nm) in PLA matrix. Non‐radiative decay of dopant triplet excitons are effectively suppressed by the rigid environment of polymer matrix and dopant‐polymer interactions. This enables the prepared PLA‐based RTP materials exhibited ultralong lifetimes of 3.84 s and the naked‐eye‐visible afterglow duration up to 48 s. Recyclable and reprocessable RTP objects are fabricated via 3D printing and are successfully applied in the fields of artworks, monitoring and anti‐counterfeiting. This successfully expands the application of polymer‐based RTP materials in 3D fields, and will promote the commercialization of RTP materials and the development of environmentally friendly ultralong RTP materials.
Article Details
Authors (8)
Haoyi Ma
State Key Laboratory of Advanced Optical Polymer and Manufacturing Technology/Key Laboratory of Rubber‐plastics of Ministry of Education, School of Polymer Science & Engineering Qingdao University of Science & Technology Qingdao 266042 P. R. China
Yujing Qin
Department of Biological Sciences, Boler-Parseghian Center for Rare Diseases, Harper Cancer Research Institute, University of Notre Dame
Nianshuang Zhang
State Key Laboratory of Advanced Optical Polymer and Manufacturing Technology/Key Laboratory of Rubber‐plastics of Ministry of Education, School of Polymer Science & Engineering Qingdao University of Science & Technology Qingdao 266042 P. R. China
Hanyang Mu
State Key Laboratory of Advanced Optical Polymer and Manufacturing Technology/Key Laboratory of Rubber‐plastics of Ministry of Education, School of Polymer Science & Engineering Qingdao University of Science & Technology Qingdao 266042 P. R. China
Jinbin Liu
State Key Laboratory of Pulp and Paper Engineering School of Chemistry and Chemical Engineering South China University of Technology Guangzhou 510640 China
Shanfeng Xue
State Key Laboratory of Advanced Optical Polymer and Manufacturing Technology/Key Laboratory of Rubber‐plastics of Ministry of Education, School of Polymer Science & Engineering Qingdao University of Science & Technology Qingdao 266042 P. R. China
Qikun Sun
State Key Laboratory of Advanced Optical Polymer and Manufacturing Technology/Key Laboratory of Rubber‐plastics of Ministry of Education, School of Polymer Science & Engineering Qingdao University of Science & Technology Qingdao 266042 P. R. China
Wenjun Yang