Controlled carrier doping of single-wall carbon nanotubes (SWCNTs) is highly demanded for SWCNT electronic device applications. In this study, we propose a method for the controlled filling of n- and p-type dopant molecules in SWCNTs by co-encapsulating dopant and dummy molecules. The SWCNT dispersion was refluxed in 1,4-dioxane dissolving dopant and dummy molecules. The amount of encapsulated dopant molecules can be controlled by the ratio of dopant/dummy molecules in the solution. The relationship is not linear but resembles positive azeotrope behavior. This suggests that the mixed molecules form a condensed phase at the SWCNT wall, during the encapsulation process.

中文翻译：

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单壁碳纳米管中n型和p型掺杂剂分子的填充控制

单壁碳纳米管（SWCNT）的受控载流子掺杂是SWCNT电子设备应用的高度要求。在这项研究中，我们提出了一种通过共包封掺杂剂和伪分子来控制填充SWCNT中n型和p型掺杂剂分子的方法。将SWCNT分散体在溶解有1,4-二恶烷的掺杂剂和伪分子中回流。包封的掺杂剂分子的量可以通过溶液中掺杂剂/虚拟分子的比例来控制。该关系不是线性的，但是类似于正共沸行为。这表明在封装过程中，混合的分子在SWCNT壁上形成了凝结相。