Porous organic salts … … (POSs) are porous which various aromatic sulfonic acids and amines are regularly self-assembled by charge-assisted hydrogen bonding. Norimitsu Tohnai and co-workers demonstrate in their Research Article (e202202597) the advantages of diverse porous organic salts, such as all-organic, extremely facile preparation methods, diverse void structures and environments, and excellent CO 2 adsorption properties.

Porous organic salts (POSs) are porous organic materials, in which various aromatic sulfonic acids and amines are regularly self-assembled by chargeassisted hydrogen bonding. POSs exhibit high solubility in highly polar solvents. Therefore, they are prepared via facile recrystallization and exhibit high recyclability. In this study, tetrahedral-structured tetrasulfonic acid and triphenylmethylamine (TPMA) were combined to construct POSs with rigid diamond networks called diamondoid porous organic salts (d-POSs). Furthermore, by introducing substituents (e.g., F, Cl, Br, or I) at the para-positions of benzene rings of TPMA, these substituents were exposed on the void surface of d-POSs, and their diamond networks were distorted. This induced the formation of a variety of void structures and environments in the d-POSs, which significantly affected their gas adsorption behavior. In particular, the d-POS from TPMA substituted by fluorine exhibited very high CO 2 adsorption of 182 mL(STP) g À 1 at 1 atm in allorganic porous materials.

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Porous organic salts (POSs) are constructed by charge-assisted hydrogen bonding between amino and sulfonic groups, and can design a variety of porous structures based on the molecular design. In particular,...

A new class of diamino-substituted π-extended phenazine compound was synthesized, and its photophysical properties were investigated. The U-shaped diaminophenazine displayed photoluminescence in solution with moderate quantum yield. The diamino aromatic compound was found applicable to the poly-condensation with formaldehyde to form Tröger's base ladder polymer. The obtained microporous ladder polymer features high CO 2 adsorption selectivity against N 2 , most likely due to the presence of basic nitrogen atoms in the phenazine rings.