李岷钊,鄢正旭,张鑫媛,吕保中,彭锋.离子化策略构建木聚糖基室温磷光材料的研究[J].中国造纸,2025,44(12):24-31 本文二维码信息
二维码（扫一下试试看！）
离子化策略构建木聚糖基室温磷光材料的研究
Ionization Strategy for Constructing Xylan-based Room-temperature Phosphorescent Materials
收稿日期：2025-08-12  修订日期：2025-09-16
DOI：10.11980/j.issn.0254-508X.2025.12.003
关键词:  室温磷光  木聚糖  定向氧化还原  离子化  防伪
Key Words:room-temperature phosphorescence  xylan  directed oxdation-reduction  ionization  anti-counterfeiting
基金项目:国家重点研发计划（2022YFB4201904）；国家杰出青年科学基金（32225034）。
作者单位邮编
李岷钊* 北京林业大学林木生物质化学北京市重点实验室,北京,100083 100083
鄢正旭 北京林业大学林木生物质化学北京市重点实验室,北京,100083 100083
张鑫媛 奈丘若（承德）生物科技有限公司,河北承德,067500 067500
吕保中* 北京林业大学林木生物质化学北京市重点实验室,北京,100083 100083
彭锋* 北京林业大学林木生物质化学北京市重点实验室,北京,100083
林木资源高效生产全国重点实验室,北京,100083 		100083
摘要点击次数: 1370
全文下载次数: 494
摘要:本研究以木聚糖类半纤维素为原料，通过定向氧化还原反应将木聚糖转化为水溶性环外伯羟基木聚糖（RDAX），利用离子键合策略将含共轭结构的芳基羧酸钠发色团锚定于刚性木聚糖骨架，制备了具有颜色可调的长寿命木聚糖基室温磷光（RTP）材料。结果表明，木聚糖通过定向氧化还原分子重构提供了充足的活性交联位点和刚性环境，重构木聚糖形成的刚性氢键网络可协同离子键稳定三重态激子，使RTP材料的磷光寿命最高达1 293 ms；同时利用RDAX的热塑性，成功开发出柔性RTP防伪薄膜。
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.
查看全文   HTML   查看/发表评论  下载PDF阅读器