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| Ionization Strategy for Constructing Xylan-based Room-temperature Phosphorescent Materials |
| Received:August 12, 2025 Revised:September 16, 2025 |
| DOI：10.11980/j.issn.0254-508X.2025.12.003 |
| Key Words:room-temperature phosphorescence xylan directed oxdation-reduction ionization anti-counterfeiting |
| Fund Project:国家重点研发计划（2022YFB4201904）；国家杰出青年科学基金（32225034）。 |
| Author Name | Affiliation | Postcode | | LI Minzhao* | Beijing Key Lab of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083 | 100083 | | YAN Zhengxu | Beijing Key Lab of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083 | 100083 | | ZHANG Xinyuan | Naiqiu Ruo （Chengde） Biotechnology Co., Ltd., Chengde, Hebei Province, 067500 | 067500 | | LYU Baozhong* | Beijing Key Lab of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083 | 100083 | | PENG Feng* | Beijing Key Lab of Lignocellulosic Chemistry, Beijing Forestry University, Beijing, 100083
State Key Lab of Efficient Production of Forest Resources, Beijing,100083 | 100083 |
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| Abstract:In this paper， xylan-based hemicellulose was used as raw material. Through directed oxidation-reduction reactions， xylan was converted into water-soluble ring-external primary hydroxyl xylan (RDAX). An ionic bonding strategy was employed to anchor sodium aryl carboxylate chromophores with conjugated structures onto the rigid xylan backbone， resulting in the preparation of color-tunable， long-lifetime xylan-based room-temperature phosphorescence (RTP) materials. Experiments demonstrated that xylan provided ample active cross-linking sites and a rigid environment through directed redox molecular restructuring. The rigid hydrogen bond network formed by restructured xylan synergistically stabilizes triplet excitons via ionic bonding， resulting in a phosphorescence lifetime of up to 1 293 ms for the RTP material. Additionally， the flexible RTP anti-counterfeiting film had also been successfully developed by utilizing the thermoplasticity of RDAX. |
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