In 2022,Zhu, Jinwei; Lou, Xiaoyu; Wang, Yubing; Xiong, Zhuo; Chen, Jie; Yan, Wei published an article in Chemical Engineering Science. The title of the article was 《Conjugated microporous poly(aniline)s for removal of low-concentration formaldehyde》.Electric Literature of C18H12Br3N The author mentioned the following in the article:
Removal of indoor formaldehyde is important but challenging due to the low concentration Here, we showed the applicability of a new class of conjugated microporous poly(aniline)s (CMPAs) in this formaldehyde capture. The unique properties of rich ultramicroporosity and benzenoid amine (-NH-) groups made the resulting CMPAs ideal platforms for the efficient low-concentration formaldehyde adsorption, through the interaction between benzenoid amine groups and formaldehyde via Mannich reaction and H-bond in the ultramicropore. They therefore exhibited ultrafast adsorption, receiving > 80% removal efficiency for ca 0.7 ppm formaldehyde within 60 min, and benchmarking storage capacity, achieving ∼2679.68 mg·g-1 for CMPA-2. Our CMPAs also worked well in a self-assembled air clean unit, keeping kinetically reducing average 98% of formaldehyde after treatment of 4000 BV polluted air (with ∼25 ppm formaldehyde) without break-through. Outcomes highlighted the potential of CMPAs for the clean-up of airborne formaldehyde for human health protection in next generation. In the experiment, the researchers used Tris(4-bromophenyl)amine(cas: 4316-58-9Electric Literature of C18H12Br3N)
In other references, Tris(4-bromophenyl)amine(cas: 4316-58-9) is often used in the synthesis of porous luminescent covalent–organic polymers (COPs)Electric Literature of C18H12Br3N
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary