Kambe Tetsuya, Hosono Reina, Imaoka Shotaro, Kuzume Akiyoshi, Yamamoto Kimihisa
Laboratory for Chemistry and Life Science, Tokyo Institute of Technology , Yokohama 226-8503 , Japan.
JST-ERATO, Tokyo Institute of Technology , Yokohama 226-8503 , Japan.
J Am Chem Soc. 2019 Aug 21;141(33):12984-12988. doi: 10.1021/jacs.9b06110. Epub 2019 Aug 7.
Borophene and the analogs are attractive 2D-materials showing unique mechanical and electronic properties. In this study, the bottom-up synthesis of an atomic boron network possessing a completely planar skeleton was achieved from KBH. The borophene-analog was stabilized by oxygen atoms positioned on the same plane, providing holes and the anionic state of the layer. Potassium cations between the layers enabled crystalline stacking of the layers, as well as dissolution in solvents as atomically thin layers. The conductivity measurements revealed the electronic feature. Unlike the interplane conducting property, almost zero activation energy like a metal was suggested from the in-plane measurement.
硼烯及其类似物是具有独特机械和电子特性的二维材料，极具吸引力。在本研究中，通过硼氢化钾实现了具有完全平面骨架的原子硼网络的自下而上合成。硼烯类似物通过位于同一平面上的氧原子得以稳定，形成了空穴和层的阴离子状态。层间的钾阳离子实现了各层的晶体堆叠，并且能够以原子级薄层的形式溶解于溶剂中。电导率测量揭示了其电子特性。与层间导电特性不同，面内测量表明其具有类似于金属的几乎为零的活化能。
