Affiliation:
1. Beijing Key Laboratory of Lignocellulosic Chemistry MOE Engineering Research Center of Forestry Biomass Materials and Energy College of Materials Science and Technology Beijing Forestry University Beijing 100083 China
2. Analytical Instrumentation Center of Peking University Peking University Beijing 100871 China
3. State Key Laboratory of Pulp and Paper Engineering South China University of Technology Guangzhou 510640 China
4. State Key Laboratory of Efficient Production of Forest Resources Beijing 100083 China
Abstract
AbstractSustainable long‐lived room temperature phosphorescence (RTP) materials with color‐tunable afterglows are attractive but rarely reported. Here, cellulose is reconstructed by directed redox to afford ample active hydroxyl groups and water‐solubility; arylboronic acids with various π conjugations can be facilely anchored to reconstructed cellulose via click chemistry within 1 min in pure water, resulting in full‐color tunable RTP cellulose. The rigid environment provided by the B─O covalent bonds and hydrogen bonds can stabilize the triplet excitons, thus the target cellulose displays outstanding RTP performances with the lifetime of 2.67 s, phosphorescence quantum yield of 9.37%, and absolute afterglow luminance of 348 mcd m−2. Furthermore, due to the formation of various emissive species, the smart RTP cellulose shows excitation‐ and time‐dependent afterglows. Taking advantages of sustainability, ultralong lifetime, and full‐color tunable afterglows, et al, the environmentally friendly RTP cellulose is successfully used for nontoxic afterglow inks, delay lighting, and afterglow display.
Funder
National Natural Science Foundation of China
State Key Laboratory of Pulp and Paper Engineering
Fundamental Research Funds for the Central Universities
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
10 articles.
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