Nonconventional Full-Color Luminescent Polyurethanes: Luminescence Mechanism at the Molecular Orbital Level.

IF 9.6 1区化学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Materials Letters Pub Date : 2024-11-21 eCollection Date: 2025-01-06 DOI:10.1021/acsmaterialslett.4c02100

Nan Jiang, Ya-Jie Meng, Xin Pu, Chang-Yi Zhu, Shu-Han Tan, Yan-Hong Xu, You-Liang Zhu, Jia-Wei Xu, Martin R Bryce

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Abstract

The study of structure-activity relationships is a top priority in the development of nontraditional luminescent materials. In this work, nonconjugated polyurethanes (PUs) with full-color emission (red, green, and blue) are easily obtained by control of the diol monomer structure and the polymerization conditions. Selected diol monomers introduced single, double, or triple bond repeating units into the main chain of the PUs, in order to understand how unsaturated bonds and H-bonds affect their luminescence from a molecular orbital viewpoint. Detailed experimental and theoretical results show that the PUs have different temperature-dependent behaviors related to the interplay of H-bonding, through-space n-π interactions, and aggregation properties. The potential applications of PUs in colorful displays, covert information transmission, and multifunctional bioimaging have been verified. This work provides a new general protocol for the simple preparation of multifunctional nonconventional fluorescent polymers and deepens the understanding of their luminescence mechanisms.

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非常规全彩发光聚氨酯：分子轨道水平上的发光机制。

结构-活性关系的研究是非传统发光材料发展的重中之重。在本研究中，通过控制二醇单体结构和聚合条件，可以很容易地获得具有全彩发光（红、绿、蓝）的非共轭聚氨酯（pu）。选定的二醇单体在pu的主链中引入单键、双键或三键重复单元，以便从分子轨道的角度了解不饱和键和氢键如何影响它们的发光。详细的实验和理论结果表明，pu具有不同的温度依赖行为，这些行为与h键相互作用，通过空间n-π相互作用和聚集性质有关。其在彩色显示、隐蔽信息传输和多功能生物成像等方面的潜在应用已经得到验证。本工作为多功能非常规荧光聚合物的简单制备提供了一种新的通用方案，并加深了对其发光机理的理解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Materials Letters MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

14.60

自引率

3.50%

发文量

261

期刊介绍： ACS Materials Letters is a journal that publishes high-quality and urgent papers at the forefront of fundamental and applied research in the field of materials science. It aims to bridge the gap between materials and other disciplines such as chemistry, engineering, and biology. The journal encourages multidisciplinary and innovative research that addresses global challenges. Papers submitted to ACS Materials Letters should clearly demonstrate the need for rapid disclosure of key results. The journal is interested in various areas including the design, synthesis, characterization, and evaluation of emerging materials, understanding the relationships between structure, property, and performance, as well as developing materials for applications in energy, environment, biomedical, electronics, and catalysis. The journal has a 2-year impact factor of 11.4 and is dedicated to publishing transformative materials research with fast processing times. The editors and staff of ACS Materials Letters actively participate in major scientific conferences and engage closely with readers and authors. The journal also maintains an active presence on social media to provide authors with greater visibility.