One-dimensional diamondoid polyaniline-like nanothreads from compressed crystal aniline,Chemical Science

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One-dimensional diamondoid polyaniline-like nanothreads from compressed crystal aniline
Chemical Science ( IF 7.6 ) Pub Date : 2017-10-18 00:00:00 , DOI: 10.1039/c7sc03445h
Marcelo M. Nobrega _{1,

2,

3,

4,

5} , Erico Teixeira-Neto _{3,

6,

7} , Andrew B. Cairns _{8,

9,

10} , Marcia L. A. Temperini _{1,

2,

3} , Roberto Bini _{4,

5,

11,

11,

12}

Affiliation

Low-dimensional nanomaterials such as highly ordered polyaniline (PANI) have attracted considerable interest due to their expected extraordinary electronic and optoelectronic properties. In spite of several attempts, the attainment of atomically well-ordered PANI is a long-standing challenge. Pressure-induced polymerization of aromatic molecules in the crystal phase has been demonstrated as a practicable route for the synthesis of highly ordered polymers but this approach has never been tested to produce PANI. Here we show the synthesis of diamondoid polyaniline-like nanothreads at 33 GPa and 550 K by compressing aniline in crystal phase-II. Infrared spectroscopy, transmission electron microscopy, X-ray diffraction data, and DFT calculations support the formation of this totally new polyaniline-like nanothread. The NH₂-enriched carbon nanothread combines the outstanding mechanical properties of carbon nanotubes with the versatility of NH₂ groups decorating the exterior of the nanothreads representing potential active sites for doping and as linkers for molecules with biological interest and inorganic nanostructures. The synergy of all of these properties emphasizes the strong potential of this material to be applied in a broad range of areas, from chemistry to materials engineering.

中文翻译：

压缩晶体苯胺的一维类金刚石类聚苯胺类纳米线

低维纳米材料，例如高度有序的聚苯胺（PANI），由于其预期的非凡的电子和光电特性而吸引了相当大的兴趣。尽管进行了几次尝试，但获得原子有序的PANI仍是一项长期的挑战。晶体相中芳烃分子的压力诱导聚合已被证明是用于合成高度有序聚合物的可行途径，但这种方法从未经过过生产PANI的测试。在这里，我们展示了在II相晶体中通过压缩苯胺在33 GPa和550 K下合成类金刚石聚苯胺样纳米线。红外光谱，透射电子显微镜，X射线衍射数据和DFT计算支持这种全新的聚苯胺样纳米线的形成。NH ₂富含碳的纳米线将碳纳米管的出色机械性能与NH ₂基团的多功能性相结合，装饰了纳米线的外部，代表了潜在的掺杂活性位点，并作为具有生物学意义和无机纳米结构的分子的连接体。所有这些特性的协同作用强调了这种材料在化学到材料工程等广泛领域中的强大潜力。

更新日期：2017-11-03

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