Department of Chemistry , Pennsylvania State University , University Park , Pennsylvania 16802 , United States.
Materials Research Institute , Pennsylvania State University , University Park , Pennsylvania 16802 , United States.
J Am Chem Soc. 2018 Apr 18;140(15):4969-4972. doi: 10.1021/jacs.7b13247. Epub 2018 Apr 9.
Carbon nanothreads are a new one-dimensional sp carbon nanomaterial. They assemble into hexagonal crystals in a room temperature, nontopochemical solid-state reaction induced by slow compression of benzene to 23 GPa. Here we show that pyridine also reacts under compression to form a well-ordered sp product: CNH carbon nitride nanothreads. Solid pyridine has a different crystal structure from solid benzene, so the nontopochemical formation of low-dimensional crystalline solids by slow compression of small aromatics may be a general phenomenon that enables chemical design of properties. The nitrogen in the carbon nitride nanothreads may improve processability, alters photoluminescence, and is predicted to reduce the bandgap.
碳纳米线是一种新型一维 sp 碳纳米材料。它们在室温下通过缓慢压缩苯至 23GPa 诱导的非拓扑化学反应组装成六方晶体。在这里，我们表明吡啶在压缩下也会反应，形成有序的 sp 产物：CNH 碳氮化物纳米线。固态吡啶的晶体结构不同于固态苯，因此通过缓慢压缩小分子芳烃形成低维晶态固体的非拓扑化学反应可能是一种普遍现象，可实现对性质的化学设计。碳氮化物纳米线中的氮可能会改善加工性能、改变光致发光，并有望降低带隙。
