《Hydrogen bonding induces dual porous types with microporous and mesoporous covalent organic frameworks based on Biscarbazole units》 was published in Microporous and Mesoporous Materials in 2020. These research results belong to Abuzeid, Hesham R.; El-Mahdy, Ahmed F. M.; Kuo, Shiao-Wei. HPLC of Formula: 6825-20-3 The article mentions the following:
Although the topologies of covalent organic frameworks (COFs) can be controlled mainly by varying the symmetries of the building blocks condensed to form the structures, another approach is to change the structures of blocks but retain the same symmetries. The construction of a single COF featuring pores of different sizes from two sym. building blocks remains extremely difficult. In this paper, we report an investigation into the effect of hydrogen bonding on the topol. regulation of two-dimensional COFs as a new approach for managing their properties. Our strategy involved introducing pristine and substituted diamine monomers-benzidine (BD) and 1,4-dihydroxybenzidine (DHBD)-into the skeleton of Biscarbazole-based COFs. The constructed Biscarbazole-based COFs, Cz-BD and Cz-DHBD, were designed using a (C2 + C2) geometry strategy and synthesized through Schiff-base condensations of Biscarbazole-4CHO and the benzidine derivatives The resulting COFs featured two different topologies: Cz-BD COF possessing a single type of pore having a tetragonal structure, and Cz-DHBD COF possessing a Kagome structure featuring two types of pores (one hexagonal and the other triangular with mesoporous and microporous structure, induced by intramol. OH···N hydrogen bonding). These COFs exhibited high crystallinity, great thermal stability, and large surface areas, as well as synergistic structural effects and high-performance CO2 uptake.3,6-Dibromo-9H-carbazole(cas: 6825-20-3HPLC of Formula: 6825-20-3) was used in this study.
3,6-Dibromo-9H-carbazole(cas: 6825-20-3) is used as a reagent in the synthesis of P7C3-A20 which is a potent neuroprotective agent. And it has been used in the preparation of N-(2-hydroxyethyl)-3,6-dibromocarbazole.HPLC of Formula: 6825-20-3
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary