In 2017,Lu, Zhiyong; Xing, Yue; Du, Liting; He, Haiyan; Zhang, Jianfeng; Hang, Cheng published 《Isostructural functionalization by -OH and -NH2: different contributions to CO2 adsorption》.RSC Advances published the findings.Formula: C6H5Br2N The information in the text is summarized as follows:
Two isostructural mfj-type metal-organic frameworks, [Cu2(ABDPB)(H2O)]n (HHU-3, HHU for Hohai University; H4ABDPB for 5-amino-1,3-bis(3,5-dicarboxylphenyl)-benzene) and [Cu2(OBDPB)(H2O)]n (HHU-4; H4OBDPB for 5-hydroxyl-1,3-bis(3,5-dicarboxylphenyl)-benzene) were successfully synthesized by V-shaped tetracarboxylic ligand with amino and hydroxyl groups, resp. Compared with the prototypical MOF, PCN-306, both MOFs exhibit obviouse decreases in BET surface area and pore volume, with the values of 2354 m2 g-1 and 0.920 cm3 g-1 for HHU-3, and 2353 m2 g-1 and 0.954 cm3 g-1 for HHU-4. Although both functional groups are believed to be effective in strengthen CO2 interactions with the framework, in this type of MOF, amino group works better due to its basic nature. Meanwhile, the decoration of amino groups grafted HHU-3 high CO2 adsorption capacity (25.6 wt% at 1 bar and 273 K) and high CO2 selectivity (SCO2/N2 = 129).3,5-Dibromoaniline(cas: 626-40-4Formula: C6H5Br2N) was used in this study.
3,5-Dibromoaniline(cas: 626-40-4) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).Formula: C6H5Br2N
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary