In 2022,Wu, Lipeng; Zhang, Kaiming; Shi, Jiaoyan; Wu, Fan; Zhu, Xufei; Dong, Wei; Xie, Aming published an article in Composites, Part B: Engineering. The title of the article was 《Metal/nitrogen co-doped hollow carbon nanorods derived from self-assembly organic nanostructure for wide bandwidth electromagnetic wave absorption》.HPLC of Formula: 523-27-3 The author mentioned the following in the article:
Converting carbonaceous material into heteroatom-doped hollow nanomaterial is a promise route to realize lightweight and high-performance electromagnetic wave absorption (EMA). In this work, a series of metal/nitrogen co-doped hollow carbon nanorods (M-NHCRs, M represent as Fe, Co, Ni) were successfully fabricated via a facile self-assembly template strategy, which refers to self-assembling of 9,10-dibromoanthracene (DBA), surficial modification with polydopamine (PDA) and metal ions, and controlled pyrolysis. Among these M-NHCRs, Co-NHCR exhibits remarkable EMA performance, where the optimal reflection loss (RL) reaches -58.6 dB at a loading ratio of 5 wt%. Moreover, the effective absorption bandwidth (EAB) gets to 7.65 GHz. It is considered that the high-performance EMA should be attributed to the unique hollow structure, excellent conductance loss and improved polarization relaxation. This research not only provides a new idea for the design of lightweight electromagnetic absorbents with broadband efficient absorption, but also broadens the way of synthesizing hollow nanomaterials.9,10-Dibromoanthracene(cas: 523-27-3HPLC of Formula: 523-27-3) was used in this study.
9,10-Dibromoanthracene(cas: 523-27-3) is synthesized by the bromination of anthracene. The bromination reaction is carried out at room temperature using carbon tetrachloride as a solvent. Using 80-85% anthracene as raw material, adding bromine to react for half an hour, the yield is 83-88%.HPLC of Formula: 523-27-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary