Complexation of carbon nanorings with fullerenes: Supramolecular dynamics and structural tuning for a fullerene sensor
Complexation of carbon nanorings with fullerenes: Supramolecular dynamics and structural tuning for a fullerene sensor
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DOI：
10.1002/anie.200352033
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发表时间：
2003-01-01
影响因子：
16.6
通讯作者：
Oda, M
中科院分区：
文献类型：
--
作者：
Kawase, T;Tanaka, K;Oda, M
最近，我们发现，一个碳纳米环1，环[6]对苯乙炔（[6] CPPA），它具有一个光滑的带状结构，直径为1.31 nm，形成稳定的包合物与富勒烯（C60和甲桥[60]-富勒烯衍生物）在溶液中，以及在固态。[1]虽然主体分子仅由碳原子和氢原子组成，但缔合常数相当高（> 104）。[2]结合晶体学分析，我们认为，在络合过程中，一种新的非共价相互作用，即凹凸π-π相互作用起着重要的作用。[3]同样的相互作用在多壁碳纳米管，[4]巴基洋葱[5]和“富勒烯豆荚”的形成和性质中也很重要。[6]另一方面，分子结构也揭示了1的空腔尺寸略小于C60的空腔尺寸。这些发现促使我们研究碳纳米环的结构调整，以优化与富勒烯（C60和C70）的络合。
Recently we have found that a carbon nanoring 1, cyclic [6] paraphenyleneacetylene ([6] CPPA), which has a smooth belt-shaped structure with a 1.31 nm diameter, forms stable inclusion complexes with fullerenes (C60 and a methano [60]-fullerene derivative) in solution as well as in the solid state.[1] Although the host molecule is composed of only carbon and hydrogen atoms, the association constants are quite high (> 104).[2] From these results, together with crystallographic analysis, we concluded that the novel noncovalent interaction, namely concave–convex π–π interaction, plays an important role in the complexation.[3] The same interaction should also be important in the formation and properties of multiwalled carbon nanotubes,[4] Bucky onions [5] and “fullerene Peapods”.[6] On the other hand, the molecular structure also reveals that the cavity size of 1 is slightly smaller than that of C60. These findings promoted us to investigate the structural tuning of carbon nanorings for optimizing complexation with fullerenes (C60 and C70).