Fullerphene Nanosheets: A Bottom‐Up 2D Material for Single‐Carbon‐Atom‐Level Molecular Discrimination
Fullerphene Nanosheets: A Bottom‐Up 2D Material for Single‐Carbon‐Atom‐Level Molecular Discrimination
复制标题
DOI：
10.1002/admi.202102241
复制
发表时间：
2022
影响因子：
5.4
通讯作者：
Jingwen Song;T. Murata;K. Tsai;Xiaofang Jia;F. Sciortino;R. Ma;Y. Yamauchi;Jonathan P. Hill;L. Shrestha;K. Ariga
中科院分区：
文献类型：
--
作者：
Jingwen Song;T. Murata;K. Tsai;Xiaofang Jia;F. Sciortino;R. Ma;Y. Yamauchi;Jonathan P. Hill;L. Shrestha;K. Ariga
超薄二维纳米多孔材料在传感应用中提供了更高的灵敏度和高空间分辨率，这使得它们对客体分子的选择性区分非常重要。本文报道了一种新型分子薄氮掺杂二维富勒烯的自底向上制备方法。对自底向上组装的富勒烯C60 -乙二胺（EDA）薄膜在700℃下进行热退火，形成了氮掺杂的超薄碳膜富勒烯，其表面呈现层次微孔/介孔结构。富勒烯的N掺杂主要由吡咯和季氮原子主导，它们允许通过非共价相互作用对低分子量羧酸蒸汽进行选择性和重复的吸附和解吸。分层微/介孔结构提供的大表面积（655.2 m2 g-1）和孔体积（0.659 cc g-1）导致富勒烯在气相中对甲酸的敏感性优于乙酸，这表明新型二维富勒烯为在单碳原子水平上识别羧酸提供了一个有吸引力的平台。
Ultrathin 2D nanoporous materials offer enhanced sensitivity and high spatial resolution in sensing applications making them important for the selective discrimination of guest molecules. Here bottom‐up fabrication is reported of a novel molecularly‐thin nitrogen‐doped 2D fullerphene. Thermal annealing at 700 °C of a bottom‐up assembled fullerene C60‐ethylenediamine (EDA) thin film results in formation of a nitrogen‐doped ultrathin carbon film, fullerphene, which exhibits a hierarchically micro/mesoporous structure at its surfaces. N‐doping of fullerphene is dominated by pyrrolic and quaternary nitrogen atoms, which allow selective and repetitive adsorption and desorption of low‐molecular‐weight carboxylic acid vapors through noncovalent interactions. The large surface area (655.2 m2 g–1) and pore volume (0.659 cc g–1) offered by the hierarchical micro/mesoporous architecture leads to superior sensitivity of fullerphene to formic acid over acetic acid in the vapor phase demonstrating that novel 2D fullerphene provides an attractive platform for the discrimination of carboxylic acids at the single‐carbon‐atom level.