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Iminoboronate Polymers as Dynamically Adaptable, Photoactive Materials

亚氨基硼酸盐聚合物作为动态适应性光活性材料

基本信息

批准号：
EP/M01083X/1
负责人：
Jonathan Nitschke
金额：
$ 77.74万
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2015
资助国家：
英国
起止时间：
2015 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FM01083X%2F1
关键词：
Iminoboronate Polymers Dynamically Adaptable Photoactive

项目摘要

Polymers incorporating dynamic covalent bonds form a class of "smart" materials that are able to adapt to-or can be altered in response to-applied chemical or environmental stimuli. We propose a new class of dynamic, conjugated polymers based on the reversible iminoboronate ester bonding motif. Simple AB-type monomers incorporating aldehyde, amine, and boronic acid functionalities will polymerize together with diols to produce iminoboronate ester polymers. The presence of orthogonal dynamic imine and boronate ester bonds will allow us to develop easily functionalizable, and thus tuneable, multicomponent polymer materials that possess the ability to reorganise or adapt in response to various external stimuli. By incorporating electronically distinct diols, the photophysical properties of the conjugated polyimine polymer backbone may be tuned, providing a predictable pathway for attaining desired material properties. The unique set of characteristics of this materials system - highly tuneable electronic properties, structural rigidity through dative N-B stabilisation and electrochemical stability due to non-conjugated boron functionalization - promise to make these polymers strong candidates for light-emitting devices. (Additionally, obtaining a fundamental understanding of the affinity of the iminoboronate for electronically different diols will allow us to promote consecutive changes in polymer properties through successive diol exchanges.) These materials will be investigated as fluorescent polyreceptors for specific diols and as controllably crosslinkable or decrosslinkable materials with the addition or displacement of tetrols. Development of these high-value smart materials will lay the groundwork for the next generation of multifunctional devices, such as blue-light-emitting polymers with superior efficiency and electrochemical stability to the state-of-the-art poly(fluorene) OLEDs.

聚合物结合动态共价键形成一类“智能”材料，能够适应或改变对应用化学或环境刺激的反应。我们提出了一类新的动态，共轭聚合物的基础上可逆的亚氨基硼酸酯键合基序。引入醛、胺和硼酸官能团的简单AB型单体将与二醇共聚以产生亚氨基硼酸酯聚合物。正交动态亚胺和硼酸酯键的存在将使我们能够开发容易官能化的，因此可调的，多组分聚合物材料，具有重组或适应各种外部刺激的能力。通过引入电子上不同的二醇，可以调节共轭聚亚胺聚合物主链的电子物理性质，提供用于获得所需材料性质的可预测途径。这种材料系统的独特特性-高度可调的电子特性，通过配位N-B稳定化的结构刚性和由于非共轭硼官能化的电化学稳定性-有望使这些聚合物成为发光器件的强有力候选者。（此外，获得对亚氨基硼酸酯对电子上不同的二醇的亲和力的基本理解将使我们能够通过连续的二醇交换促进聚合物性质的连续变化。这些材料将被研究作为特定二醇的荧光多受体和作为可控交联或decrossspectrometers与添加或取代的四醇。这些高价值智能材料的开发将为下一代多功能器件奠定基础，例如具有上级效率和电化学稳定性的蓝光发射聚合物。