Phthalazinone-based copolymers with intrinsic microporosity (PHPIMs) and their separation performance

Synthesised spirobichroman‐based polyimide functionalized by pyridine: Effects of substituent position on gas separation and thermal properties

“…Moreover, the acidic gas CO 2 permeability showed a significantly higher value than that of other test gases. This was attributed to the basic group of the pyridine structure facing enhanced interactions with CO 2 owing to Lewis acid‐base interactions, which increased the acidic gas CO 2 permeability . The carbon dioxide/methane selectivity was and the carbon dioxide/nitrogen selectivity was .…”

“…acidic gas CO 2 permeability. [42][43][44] The carbon dioxide/ methane selectivity was α CO 2 =CH 4 > 30 and the carbon dioxide/nitrogen selectivity was α CO 2 =N 2 > 24 . The turnstile-like rotary motion undergone by the methyl group and the basic group of pyridine contained in the polymers enhanced the passage of small-sized molecules to such as CO 2 and prevented that of large-sized molecules such as CH 4 and N 2 .…”

Simple Fabrication of High-Efficiency N,O,F,P-Containing Electrodes through Host–Guest Doping for High-Performance Supercapacitors

“…The synthesis of 4,4′-(4- oxophthalazine-1,3­(4 H )-diyl)­dibenzonitrile (OPDZ) was based on an existing report (Figures S1 and S2). OPDZ (0.86 mmol) and anhydrous ZnCl 2 (4.3 mmol) were mixed evenly in a glovebox (argon with <0.1 ppm oxygen and <0.1 ppm water), transferred to a quartz tube, removed of argon, and vacuumed. The sample was heated at a rate of 5 °C min –1 to 600 °C and maintained for 30 h. The resulting black powder was washed successively with 5% HCl and deionized water for 24 h. Then the sample was vacuum-dried at 100 °C for 24 h to obtain MHCFs@600 (Figure S2).…”

“…First, we obtained a micropore heteroatom carbon framework (MHCFs@600) with a uniform distribution of oxygen and nitrogen atoms by ionothermal synthesis polymerization (Figure 1a). 26 Then on the basis of the measurement of the pore size distribution, we selected the appropriate size of the guest, (CH 3 CH 2 CH 2 CH 2 ) 4 N + (PF 6 ) − , which was introduced to the MHCFs@600. Consequently, a new material, f-MHCFs@ 600, was obtained by host−guest interaction (Figure 1b).…”

“…Therefore, in this study, we designed electrode materials codoped with nitrogen, oxygen, phosphorus, and fluorine, and the physical and chemical properties cointeract. First, we obtained a micropore heteroatom carbon framework (MHCFs@600) with a uniform distribution of oxygen and nitrogen atoms by ionothermal synthesis polymerization (Figure a) . Then on the basis of the measurement of the pore size distribution, we selected the appropriate size of the guest, (CH 3 CH 2 CH 2 CH 2 ) 4 N + (PF 6 ) − , which was introduced to the MHCFs@600.…”