Статья

Photoactivated room temperature phosphorescence from lignin

Jingyi ZhouInternational joint lab of advanced biomass materials, Northeast Forestry University, Heilongjiang Province, Harbin, ChinaBing TianInternational joint lab of advanced biomass materials, Northeast Forestry University, Heilongjiang Province, Harbin, ChinaYingxiang ZhaiKey Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Harbin, ChinaMin WangKey Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Harbin, ChinaShouxin LiuKey Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Harbin, ChinaJian LiKey Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Harbin, ChinaShujun LiKey Laboratory of Bio-based Material Science & Technology, Northeast Forestry University, Ministry of Education, Harbin, ChinaTony D. JamesSchool of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, China. [email protected]Zhijun ChenInternational joint lab of advanced biomass materials, Northeast Forestry University, Heilongjiang Province, Harbin, China. [email protected]

2024en

ABI

Аннотация

Sustainable photoactivated room temperature phosphorescent materials exhibit great potential but are difficult to obtain. Here, we develop photoactivated room temperature phosphorescent materials by covalently attaching lignin to polylactic acid, where lignin and polylactic acid are the chromophore and matrix, respectively. Initially the phosphorescence of the lignin is quenched by residual O2. However, the phosphorescence is switched on when the residual oxygen is consumed by the triplet excitons of lignin under continuous UV light irradiation. As such, the lifetime increases from 3.0 ms to 221.1 ms after 20 s of UV activation. Interestingly, the phosphorescence is quenched again after being kept under an atmosphere of air for 2 h in the absence of UV irradiation due to the diffusion of oxygen into the materials. Using these properties, as-developed material is successfully used as a smart anti-counterfeiting logo for a medicine bottle and for information recording. Convenient and sustainable photoactivated room temperature phosphorescent (RTP) materials exhibit great potential in a wide ranging of applications but are difficult to obtain. Here the authors develop a photoactivated RTP materials by covalently attaching lignin to polylactic acid.

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Идентификаторы

DOI: 10.1038/s41467-024-51545-w

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar