Ruilan Guo

TL;DR: In this article, a series of rigid, bulky triptycene-based diamine monomers were designed, synthesized, and subsequently incorporated into the backbone of polyimides via polycondensation with 2,2′-bis(3,4-dicarboxyphenyl)hexafluoropropane dianhydride (6FDA) to obtain a series polyimide membranes with high fractional free volume.

TL;DR: The HAB-6FDA polyimide was synthesized from 3,3′-dihydroxy-4,4′diamino-biphenyl (HAB) and 2,2′-bis-(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FIDA) by a two-step polycondensation method with chemical imidization as discussed by the authors.

TL;DR: A new series of highly CO2-selective, amorphous PEO-containing segmented copolymers prepared from commercial Jeffamine polyetheramines and pentiptycene-based polyimide are reported, making them attractive for hydrogen purification and carbon capture.

TL;DR: In this article, the solubility coefficients of H2, N2, O2, CH4, and CO2 were determined over a range of pressures at 35 °C in a glassy, amorphous, ortho-functional polyimide prepared from 3,3′-dihydroxy-4,4′ -diamino-biphenyl (HAB) and 2,2′-bis-(3,4-dicarboxyphenyl) hexafluoropropane dianhydride (6FDA).