Multicolor Emissive Hyperbranched Polysilicophosphate Ester from n-π Interaction and Concentrated Negative Electrostatic Potential-Enhanced Spatial Electronic Communication

IF 5.1 1区化学 Q1 POLYMER SCIENCE

Macromolecules Pub Date : 2025-01-10 DOI:10.1021/acs.macromol.4c0279110.1021/acs.macromol.4c02791

Lihua Bai*, Xiaoqian Ge, Shunsheng Zhao, Hui Yang, Juanmin Li, Hongxia Yan and Xiangrong Liu*,

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引用次数: 0

Abstract

Unconventional fluorescent polymers have attracted wide attention due to their excellent biocompatibility, facile preparation, and unique fluorescent properties. However, developing high-performance polymers and revealing the emission mechanism are still challenging. Herein, to explore the relationship between chemical structures and fluorescent properties, four hyperbranched poly(silicophosphate) esters (HSiP0-HSiP3) were prepared. Increasing the P═O(O)₃:Si(O)₃ ratios generated enhanced red fluorescence. Experimental and theoretical calculation results showed that the enhanced n-π interactions between P═O and the O/N atoms promoted the concentration of negative electrostatic potential and enhanced spatial electronic communications, and then decreased the energy gap and generated strong red emission. Meanwhile, the cluster of functional groups attracted a negative charge of isolated functional groups, which further enhanced the fluorescence. Additionally, these polymers showed excellent potential in bacterial imaging and information encryption. Thus, this work provides an efficient method for developing long-wavelength materials while providing new insights into the emission origin.

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来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.