Friedrich-Alexander-Universität Erlangen-Nürnberg, Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials, Egerlandstrasse 3, 91058 Erlangen, Germany.
Nat Chem. 2009 Jun;1(3):243-9. doi: 10.1038/nchem.214. Epub 2009 May 17.
Single-wall carbon nanotubes (SWNTs) are emerging as materials with much potential in several disciplines, in particular in electronics and photovoltaics. The combination of SWNTs with electron donors or acceptors generates active materials, which can produce electrical energy when irradiated. However, SWNTs are very elusive species when characterization of their metastable states is required. This problem mainly arises because of the polydispersive nature of SWNT samples and the inevitable presence of SWNTs in bundles of different sizes. Here, we report the complete and thorough characterization of an SWNT radical ion-pair state induced by complexation with a perylene dye, which combines excellent electron-accepting and -conducting features with a five-fused ring π-system. At the same time, the perylene dye enables the dispersion of SWNTs by means of π-π interactions, which gives individual SWNTs in solution. This work clears a path towards electronic and optoelectronic devices in which regulated electrical transport properties are important.
单壁碳纳米管 (SWNTs) 作为一种具有多种潜力的材料正在崭露头角，特别是在电子学和光伏领域。将 SWNTs 与电子给体或受体结合可生成活性材料，当受到照射时可以产生电能。然而，当需要对其亚稳态进行表征时，SWNTs 是非常难以捉摸的物质。这个问题主要是由于 SWNT 样品的多分散性以及不可避免的不同大小的 SWNT 束的存在。在这里，我们报告了通过与苝染料络合诱导的 SWNT 自由基离子对态的完全和彻底表征，苝染料具有优异的电子接受和传导特性以及五重环π-系统。同时，苝染料通过π-π 相互作用使 SWNTs 分散，在溶液中得到单个的 SWNTs。这项工作为电子和光电设备开辟了道路，其中调节电输运特性非常重要。
