发表机构
University of Antwerp; CASCH Center of Excellence, University of Antwerp; Institute of Nanotechnology, Karlsruhe Institute of Technology; Claude Bernard University Lyon 1; Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST; Tokyo Metropolitan University（安特卫普大学; 安特卫普大学 CASCH 卓越中心; 卡尔斯鲁厄理工学院纳米技术研究所; 里昂第一大学克劳德·贝尔纳大学; 加泰罗尼亚纳米科学和纳米技术研究所（ICN2），西班牙国家研究委员会和巴塞罗那自治大学; 东京都立大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究单壁碳纳米管内掺杂封装电荷转移分子的方法，比较熔体填充、溶液回流、真空相升华等填充方式；通过多种手段评估封装效率与电子改性，还介绍一种无需大量溶剂洗涤的真空相法提高封装系统清洁度。
AI 中文摘要
单壁碳纳米管是纳米电子和光电器件的潜在构建材料，但可靠且稳定的掺杂颇具挑战。在单壁碳纳米管腔内封装电荷转移分子是实现稳定掺杂的一条有前景的途径。本文系统研究了用电子供体四硫富瓦烯和电子受体四氰基对苯二醌二甲烷填充电弧放电单壁碳纳米管的情况，比较了不同的填充方法，包括熔体填充、溶液回流和真空相升华。我们跟踪了从未填充的原始粉末到水性分散体的整个加工流程，并采用密度梯度超速离心法将填充的纳米管与空纳米管以及金属纳米管与半导体纳米管分离。使用吸收光谱、共振拉曼散射、热重分析和电子顺磁共振评估封装效率和电子改性。最后，我们引入了一种互补的真空相方法，该方法无需大量溶剂洗涤即可去除外部吸附的分子，从而实现更清洁的封装系统。
英文摘要
Single wall carbon nanotubes (SWCNTs) are promising building blocks for nanoelectronic and optoelectronic devices, yet reliable and stable doping, particularly n type, remains challenging due to strong environmental sensitivity and competing extrinsic effects. Encapsulation of charge transfer molecules within the SWCNT cavity offers a promising route to stable doping while preserving the nanotubes outer surface for subsequent processing. Here, we systematically investigate the filling of arc discharge SWCNTs with the electron donor tetrathiafulvalene and electron acceptor tetracyanoquinodimethane, comparing different methods for filling, including melt filling, solution reflux, and vacuum phase sublimation. We follow the entire processing workflow from raw, unfilled powders to aqueous dispersions and employ density gradient ultracentrifugation to separate filled from empty nanotubes as well as metallic from semiconducting ones. Encapsulation efficiency and electronic modification are assessed using absorption spectroscopy, resonant Raman scattering, thermogravimetric analysis, X-ray photoelectron spectroscopy and electron paramagnetic resonance. Finally, we introduce a complementary vacuum-phase method that removes externally adsorbed molecules without extensive solvent washing, enabling cleaner encapsulated systems.
Comments64 pages, 22 figures
DOI：10.1016/j.carbon.2026.122158
