title: Three N-H functionalized metal-organic frameworks with selective CO2 uptake, dye capture, and catalysis.
abstract: Three N-H functionalized metal-organic frameworks, Pb-DDQ, Zn-DDQ, and Cu-DDQ, were synthesized with a new flexible dicarboxylate ligand based on quinoxaline (H2DDQ = N,N'-dibenzoic acid-2,3-diaminoquinoxaline). CO2 adsorptions indicate that Zn-DDQ and Cu-DDQ have greatly enhanced the CO2 uptake due to the opposite N-H groups on pyrazine. With very small adsorption of N2, Cu-DDQ shows high selectivity for CO2 and N2. The three MOFs also have large adsorptions of some selected dyes, while Zn-DDQ and Cu-DDQ with large but different shapes of pores are demonstrated to be promising materials for fast separation of MB/other and CV/other mixtures, respectively. The cyanosilylation of aldehydes and ketones with high yields in a short reaction time for Cu-DDQ indicates that Cu-DDQ has a higher Lewis acidity than the other two MOFs.
authors.affiliation: School of Chemistry and Chemical Engineering, Jiangsu University , Zhenjiang 212013, People's Republic of China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Zhu
authors.forename: Yan-Mei
authors.initials: YM
authors.lastname: Wang
authors.forename: Sheng-Yun
authors.initials: SY
authors.lastname: Zhao
authors.forename: Pan
authors.initials: P
authors.lastname: Liu
authors.forename: Chao
authors.initials: C
authors.lastname: Wei
authors.forename: Yun-Long
authors.initials: YL
authors.lastname: Wu
authors.forename: Chang-Kun
authors.initials: CK
authors.lastname: Xia
authors.forename: Ji-Min
authors.initials: JM
authors.lastname: Xie