Long-Lived Room-Temperature Phosphorescent Cellulose Materials with Dynamic Cross-Linking

IF 5.9 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biomacromolecules Pub Date : 2026-09-14 Epub Date: 2026-08-12 DOI:10.1021/acs.biomac.6c01086

Lei Luo, Huiyu Bai, Ting Li, Xuhui Zhang, Jing Huang, Shibo Wang, Yang Wang, Weifu Dong

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Abstract

In this work, a multicomponent boric acid cross-linking strategy was developed to prepare cellulose-based RTP materials, using sodium carboxymethyl cellulose as the rigid matrix, poly(vinyl alcohol) (PVA) as the auxiliary network regulator, boric acid as the dynamic covalent cross-linker, and 9-phenanthreneboronic acid (PA) as the phosphorescent guest. Boric acid forms a dynamic covalent cross-linked network with hydroxyl groups of CMC and PVA, while PA is tightly immobilized in the matrix through hydrogen bonding and boron-associated coordination interactions, constructing a dense and rigid confined microenvironment. The cellulose-based film exhibits excellent RTP performance, with a phosphorescence lifetime of 2.61 s, an absolute quantum yield of 13.85%, and a visually distinguishable afterglow lasting up to 20 s. Meanwhile, the cross-linked structure endows the material with outstanding mechanical properties (tensile strength of 140 MPa). Additionally, the material displays multiple functional characteristics, including time-resolved information encryption, water-rewritable capability, and reversible responsiveness to humidity and pH.

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查看原文本刊更多论文

动态交联的室温长寿命磷光纤维素材料

本研究以羧甲基纤维素钠为刚性基体，聚乙烯醇（PVA）为辅助网络调节剂，硼酸为动态共价交联剂，9-菲壬基硼酸（PA）为磷光主体，采用多组分硼酸交联策略制备纤维素基RTP材料。硼酸与CMC和PVA的羟基形成动态共价交联网络，而PA通过氢键和硼缔合的配位作用紧密固定在基体中，构建了致密刚性的受限微环境。纤维素基薄膜具有优异的RTP性能，其磷光寿命为2.61 s，绝对量子产率为13.85%，余辉持续时间长达20秒。同时，交联结构使材料具有优异的力学性能（抗拉强度达140 MPa）。此外，该材料显示出多种功能特性，包括时间分辨信息加密、水可重写能力以及对湿度和pH值的可逆响应。

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来源期刊

Biomacromolecules 化学-高分子科学

CiteScore

10.60

自引率

4.80%

发文量

417

审稿时长

1.6 months

期刊介绍： Biomacromolecules is a leading forum for the dissemination of cutting-edge research at the interface of polymer science and biology. Submissions to Biomacromolecules should contain strong elements of innovation in terms of macromolecular design, synthesis and characterization, or in the application of polymer materials to biology and medicine. Topics covered by Biomacromolecules include, but are not exclusively limited to: sustainable polymers, polymers based on natural and renewable resources, degradable polymers, polymer conjugates, polymeric drugs, polymers in biocatalysis, biomacromolecular assembly, biomimetic polymers, polymer-biomineral hybrids, biomimetic-polymer processing, polymer recycling, bioactive polymer surfaces, original polymer design for biomedical applications such as immunotherapy, drug delivery, gene delivery, antimicrobial applications, diagnostic imaging and biosensing, polymers in tissue engineering and regenerative medicine, polymeric scaffolds and hydrogels for cell culture and delivery.