Dynamic Crosslinked Phosphorescent Poly(vinyl alcohol)-Terpyridine Films with Enhanced Mechanical Properties and Tunable Shape Memory

IF 4.1 2区化学 Q2 POLYMER SCIENCE

Chinese Journal of Polymer Science Pub Date : 2024-08-27 DOI:10.1007/s10118-024-3189-2

Meng Wei, Wei-Hao Feng, Chen Yu, Zhen-Yi Jiang, Guang-Qiang Yin, Wei Lu, Tao Chen

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引用次数: 0

Abstract

Achieving versatile room temperature phosphorescence (RTP) materials, especially with tunable mechanical properties and shape memory is attractive and essential but rarely reported. Here, a strategy was reported to realize multi-functional RTP films with multicolor fluorescence, ultralong afterglow, adjustable mechanical properties, and shape memory through the synergistic dynamic interaction of lanthanide (Ln^III)-terpyridine coordination, borate ester bonds, and hydrogen bondings in a poly(vinyl alcohol) (PVA) matrix. By varying the amount of borax, the mechanical properties of the films could be finely controlled due to the change of crosslinking degree of dynamic borate ester bonds in PVA. The assembly and disassembly of borate ester bonds upon the trigger of borax and acid were applied as reversible linkage to achieve programmable shape memory behavior. In addition, the films displayed both fascinating multicolor fluorescence and ultralong afterglow characteristics due to the presence of Ln^III doping and confinement of terpyridine in PVA. This study provides a new avenue to impart modulable mechanical strength and shape memory to RTP materials.

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具有增强机械性能和可调形状记忆的动态交联磷光聚（乙烯醇）-三联吡啶薄膜

实现多功能室温磷光（RTP）材料，尤其是具有可调机械性能和形状记忆的材料，是非常有吸引力和必要的，但却鲜有报道。本文报告了一种策略，通过聚乙烯醇（PVA）基质中镧系元素（LnIII）-三吡啶配位、硼酸酯键和氢键的协同动态相互作用，实现了具有多色荧光、超长余辉、可调机械性能和形状记忆的多功能 RTP 薄膜。通过改变硼砂的用量，薄膜的机械性能可因 PVA 中动态硼酸酯键交联度的变化而得到精细控制。在硼砂和酸的触发下，硼酸酯键的组装和拆卸被用作可逆连接来实现可编程的形状记忆行为。此外，由于 LnIII 的掺杂和 PVA 中 terpyridine 的限制，薄膜显示出迷人的多色荧光和超长余辉特性。这项研究为赋予 RTP 材料可调控的机械强度和形状记忆提供了一条新途径。

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

Chinese Journal of Polymer Science 化学-高分子科学

CiteScore

7.10

自引率

11.60%

发文量

218

审稿时长

6.0 months

期刊介绍： Chinese Journal of Polymer Science (CJPS) is a monthly journal published in English and sponsored by the Chinese Chemical Society and the Institute of Chemistry, Chinese Academy of Sciences. CJPS is edited by a distinguished Editorial Board headed by Professor Qi-Feng Zhou and supported by an International Advisory Board in which many famous active polymer scientists all over the world are included. The journal was first published in 1983 under the title Polymer Communications and has the current name since 1985. CJPS is a peer-reviewed journal dedicated to the timely publication of original research ideas and results in the field of polymer science. The issues may carry regular papers, rapid communications and notes as well as feature articles. As a leading polymer journal in China published in English, CJPS reflects the new achievements obtained in various laboratories of China, CJPS also includes papers submitted by scientists of different countries and regions outside of China, reflecting the international nature of the journal.