Molecular Engineering of Polyphosphazenes and SWNT Hybrids with Potential Applications as Electronic Materials,Macromolecules

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Molecular Engineering of Polyphosphazenes and SWNT Hybrids with Potential Applications as Electronic Materials
Macromolecules ( IF 5.1 ) Pub Date : 2018-07-03 00:00:00 , DOI: 10.1021/acs.macromol.8b00779
Yi Ren _{1,

2} , Zhongjing Li ₁ , Harry R. Allcock ₁

Affiliation

Polymer/single-walled carbon nanotube (SWNT) hybrids are promising candidates in applications such as flexible and stretchable electronics. In this contribution, we have examined structure–property relationships for constructing new polyphosphazene–SWNT hybrids. UV–vis and Raman spectroscopy studies revealed that the unique P═N backbone enables strong intermolecular donor–acceptor interactions between the polymer and SNWTs. Furthermore, the polymeric backbone and the environment at the P-centers collectively play important roles in the formation of the hybrids. For polymers with shorter alkoxy substituents, the donor–acceptor interactions between the P═N backbone and SWNTs play a crucial role in stabilizing the hybrid complexes, but for polymers with longer alkoxy substituents, the CH−π interactions and steric hindrance between the alkyl side chains and SWNTs counterbalance each other and control the stability of the hybrid complexes. Furthermore, the presence of fluorine and oxygen atoms is detrimental to the stability of the hybrid complexes. New cross-linkable polyphosphazenes with anthracene side units were also synthesized. When photo-cross-linked, these polyphosphazene/SWNT hybrids showed elastomeric characteristics and electronic properties that are promising for future applications.

中文翻译：

聚磷腈和SWNT杂化物的分子工程及其在电子材料中的潜在应用

聚合物/单壁碳纳米管（SWNT）混合材料在诸如柔性和可拉伸电子学等应用中是有前途的候选材料。在这项贡献中，我们研究了构建新的聚磷腈-SWNT杂化物的结构-性质关系。紫外可见光谱和拉曼光谱研究表明，独特的P═N主链可实现聚合物与SNWT之间强大的分子间供体-受体相互作用。此外，聚合物主链和P中心的环境在杂化物的形成中起着重要作用。对于烷氧基取代基较短的聚合物，P theN主链与单壁碳纳米管之间的供体-受体相互作用在稳定杂化配合物方面起着至关重要的作用，但对于烷氧基取代基较长的聚合物，烷基侧链和SWNT之间的CH-π相互作用和位阻彼此抵消，并控制杂化配合物的稳定性。此外，氟和氧原子的存在不利于杂化配合物的稳定性。还合成了具有蒽侧基的新型可交联聚磷腈。当进行光交联时，这些聚磷腈/ SWNT杂化物显示出弹性特性和电子特性，有望用于未来的应用。

更新日期：2018-07-03

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