Wang H H, Sun X, Lin Z C, Pang Z F, Kong X Q, Lei M, Li Y F
Department of Chemistry, Zhejiang University Hangzhou 310027 China
CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences Beijing 100190 China.
RSC Adv. 2018 Mar 6;8(17):9503-9511. doi: 10.1039/c8ra00100f. eCollection 2018 Feb 28.
Stable and highly conductive self-n-doped fullerene ammonium halides are promising optoelectronic materials. It is necessary to thoroughly understand their structure-function relationship and to develop their applications. Here, the assembly behaviors of the self-n-doped fullerene ammonium halides, as well as the functional areas in the well-developed 2D-3D lamellar structures in their ordered aggregates are systematically characterized using comprehensive methods. In the self-assembly, the solvation effect of DMSO promotes the flexibility of side-chains and drives the formation of fullerene ammonium halides into ordered bilayer structures. The conductivity-active area, which contains tightly packed halide anions sandwiched between fullerenes, provides good electron transfer property. Remarkably, residual DMSO in the side-chain area can induce aqueous Pd precursor into the highly conductive framework. After reduction, Pd nanoparticles are immobilized in the confined spaces within the conductive support. The resulting electrode can be used to electrooxidize ethanol. This study provides a facile solution strategy for the fabrication of electrocatalysts on working electrodes, which can be applied in direct alcohol fuel cells.
稳定且高导电的自n掺杂富勒烯卤化铵是很有前景的光电子材料。有必要深入了解它们的结构-功能关系并开发其应用。在此，使用综合方法系统地表征了自n掺杂富勒烯卤化铵的组装行为，以及它们有序聚集体中发育良好的二维-三维层状结构中的功能区域。在自组装过程中，二甲基亚砜（DMSO）的溶剂化作用促进了侧链的柔韧性，并驱动富勒烯卤化铵形成有序的双层结构。导电活性区域包含夹在富勒烯之间紧密堆积的卤化物阴离子，具有良好的电子转移性能。值得注意的是，侧链区域中残留的DMSO可将水性钯前驱体引入高导电框架中。还原后，钯纳米颗粒固定在导电载体的受限空间内。所得电极可用于乙醇的电氧化。本研究为在工作电极上制备电催化剂提供了一种简便的溶液策略，可应用于直接醇类燃料电池。
