Sci Rep. 2012;2:389. doi: 10.1038/srep00389. Epub 2012 Apr 30.
The recent discovery of superconductivity with a transition temperature (T(c)) at 18 K in K(x)picene has extended the possibility of high-T(c) superconductors in organic materials. Previous experience based on similar hydrocarbons, like alkali-metal doped phenanthrene, suggested that even higher transition temperatures might be achieved in alkali-metals or alkali-earth-metals doped such polycyclic-aromatic-hydrocarbons (PAHs), a large family of molecules composed of fused benzene rings. Here we report the discovery of high-T(c) superconductivity at 33 K in K-doped 1,2:8,9-dibenzopentacene (C(30)H(18)). To our best knowledge, it is higher than any T(c) reported previously for an organic superconductor under ambient pressure. This finding provides an indication that superconductivity at much higher temperature may be possible in such PAHs system and is worthy of further exploration.
最近在 K(x)picene 中发现的超导转变温度（T(c)）为 18 K，这使得有机材料中具有更高超导转变温度的超导体成为可能。基于类似碳氢化合物（如碱金属掺杂的菲）的先前经验表明，在碱金属或碱土金属掺杂的此类多环芳烃（PAHs）中，甚至可能实现更高的转变温度，PAHs 是由多个苯环稠合而成的一大类分子。在这里，我们报告了在 K 掺杂的 1,2:8,9-二苯并戊搭烯（C(30)H(18)）中发现的超导转变温度为 33 K。据我们所知，这高于常压下先前报道的任何有机超导体的 T(c)。这一发现表明，在这种 PAHs 体系中可能实现更高温度的超导，值得进一步探索。
