Porous Organic Salts: Diversifying Void Structures and Environments

Abstract

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.

Cage‐Like Sodalite‐Type Porous Organic Salts Enabling Luminescent Molecule's Incorporation and Room‐temperature Phosphorescence Induction in Air

“…The change in topology and the absence of interpenetrations resulted in a porosity of 54.4%, which was 1.3 times greater than the previous maximum porosity of POSs (41.4%). [ 29 ]…”

Crystalline porous organic salts

“…60 Subsequently, utilizing the principles of reticular chemistry, it is possible to assemble tetrahedrally stable supramolecular clusters into CPOSs with dia topology using the rational design of organic acids. 31–33 Furthermore, the introduction of halogen atoms onto TPMA also led to the formation of alternative topological structures in CPOSs, such as sod topology. 33 Hence, reticular chemistry can predict the topology of CPOSs to some extent.…”

“…23–25 In contrast, ionic bonds facilitate the formation of porous organic materials termed CPOSs. 26–38 Depending on their long-range structural order, these materials can further be categorized as amorphous or crystalline porous organic materials.…”

Recent advances in porous adsorbent assisted atmospheric water harvesting: a review of adsorbent materials

“…These bonds support channels with both high polarity and regularly distribute positive and negative charges from organic acids and bases [130,131] . These charged and highly polar channels impart CPOSs with excellent properties compared with other porous materials [132][133][134][135][136][137][138] . Owing to the strong ionic bond interactions in the framework, most CPOSs exhibit good water stability.…”