Carbazole-functionalized hyper-cross-linked polymers for CO₂ uptake based on Friedel–Crafts polymerization on 9-phenylcarbazole

• Dandan Fang,
• Xiaodong Li,
• Meishuai Zou,
• Xiaoyan Guo and
• Aijuan Zhang

Beilstein J. Org. Chem. 2019, 15, 2856–2863, doi:10.3762/bjoc.15.279

• ; hyper-cross-linked polymers; microporous; Introduction HCPs get more attention in recent years due to their high BET specific surface area [1], made under mild reaction conditions [2], used nonprecious materials as catalyst [3] and wide applications [4][5][6][7][8][9], etc. The synthesis methods of

• Dandan Fang Xiaodong Li Meishuai Zou Xiaoyan Guo Aijuan Zhang School of Materials Science & Engineering, Beijing Institute of Technology, Beijing 100081, China 10.3762/bjoc.15.279 Abstract To systematically explore the effects of the synthesis conditions on the porosity of hyper-cross-linked

• polymers (HCPs), a series of 9-phenylcarbazole (9-PCz) HCPs (P1–P11) has been made by changing the molar ratio of cross-linker to monomer, the reaction temperature T1, the used amount of catalyst and the concentration of reactants. Fourier transform infrared spectroscopy was utilized to characterize the

Polyaminoazide mixtures for the synthesis of pH-responsive calixarene nanosponges

• Antonella Di Vincenzo,
• Antonio Palumbo Piccionello,
• Alberto Spinella,
• Delia Chillura Martino,
• Marco Russo and
• Paolo Lo Meo

Beilstein J. Org. Chem. 2019, 15, 633–641, doi:10.3762/bjoc.15.59

• nanosponge materials with tunable properties. Nanosponges (NSs) [7][8][9][10][11][12][13][14] are hyper-cross-linked polymers or copolymers obtained by reacting supramolecular host species as the monomer units with suitable reticulating agents. Of course, the structural, physical and chemical features of the

Hydroxy-functionalized hyper-cross-linked ultra-microporous organic polymers for selective CO₂ capture at room temperature

• Partha Samanta,
• Priyanshu Chandra and
• Sujit K. Ghosh

Beilstein J. Org. Chem. 2016, 12, 1981–1986, doi:10.3762/bjoc.12.185

• obtain phase-pure hyper-cross-linked polymers. Both compounds were immersed in a CHCl3–THF (1:1) mixture and kept for 4–5 days to exchange the high boiling solvents occluded inside the framework with low boiling CHCl3 and THF. The solvent-exchanged phases of HCP-91 and HCP-94 were then heated at ≈100 °C

• temperature can be attributed to the high interaction of carbon dioxide with the framework. Both hyper-cross-linked polymers have hydroxy groups which are polar in nature. On the other hand CO2 molecules have a quadrupole moment, which renders a positive charge density over the carbon atom. So the polar

• for hyper-cross-linked polymers (HCPs) and b) synthesis schemes for HCP-91 and HCP-94. a) Infra-red spectra of HCP-91 (dark yellow) and HCP-94 (purple); b) N2 adsorption isotherms for HCP-91 (wine red) and HCP-94 (green) at 77 K; c) SEM image of HCP-91 and d) SEM image of HCP-94. a) CO2 adsorption