Unconventional Multicolor Fluorescent Aliphatic Hyperbranched Polyphosphate Esters with Enhanced Spatial Electronic Communication for Ion Detection and Fluorescent Hydrogel Fabrication

IF 5.9 2区化学 Q1 BIOCHEMISTRY & MOLECULAR BIOLOGY

Biomacromolecules Pub Date : 2026-09-14 Epub Date: 2026-08-28 DOI:10.1021/acs.biomac.6c00682

Cheng Tang, Manni Li, Yaling Wang, Ming Zhu, Lihua Bai

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Abstract

Unconventional fluorescent polymers exhibiting multicolor emission have garnered significant interest due to their unique optical properties and broad applications in bioimaging, chemical sensing, and security encryption. In this study, a series of multicolor fluorescent aliphatic hyperbranched polyphosphate esters were synthesized from a natural product. The prepared polymers demonstrated notable red emission, excitation-dependent fluorescence, concentration-enhanced luminescence, and aggregation-induced red-shifted emission. Experimental data combined with theoretical calculations revealed that intermolecular and intramolecular interactions promoted molecular aggregation, thereby enhancing n-π interactions. These strengthened n-π interactions further facilitated spatial electronic communication, leading to prominent multicolor fluorescence. The balance between hydroxyl and triethyl phosphate groups within the polymers promoted aggregation and spatial electronic communication, resulting in longer wavelength emission. Studies showed that the electrostatic potential distribution of the polymers played an important role in regulating their emission properties. Moreover, these polymers were successfully applied in ion sensing and fluorescent hydrogel preparation. This work provides new insights into the emission mechanism of unconventional fluorescent polymers.

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查看原文本刊更多论文

具有增强空间电子通信的非常规多色荧光脂肪族超支化聚磷酸酯用于离子检测和荧光水凝胶制备

由于其独特的光学特性和在生物成像、化学传感和安全加密方面的广泛应用，具有多色性的非常规荧光聚合物获得了极大的兴趣。本研究以天然产物为原料合成了一系列多色荧光脂族过支聚磷酸酯。所制备的聚合物表现出明显的红发射、激发依赖性荧光、浓度增强发光和聚集诱导的红移发射。实验数据结合理论计算表明，分子间和分子内相互作用促进了分子聚集，从而增强了n-π相互作用。这些增强的n-π相互作用进一步促进了空间电子通信，导致突出的多色荧光。聚合物中羟基和磷酸三乙基之间的平衡促进了聚合和空间电子通信，从而产生更长的波长发射。研究表明，聚合物的静电势分布对其发射性能起着重要的调节作用。此外，这些聚合物还成功地应用于离子传感和荧光水凝胶的制备。这项工作为非常规荧光聚合物的发射机理提供了新的见解。

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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.