ResearchPublished on 03.07.2023
Latest publication from the Coskun Group!
Coskun Research Group has recently published a new article in the journal Helvetica Chimica Acta, entitled "Eutectic Molten Salt Synthesis of Highly Microporous Macrocyclic Porous Organic Polymers for CO2 Capture".
For more infrmation and to read the article: https://onlinelibrary.wiley.com/doi/epdf/10.1002/hlca.202300072
Abstract
The development of porous materials is of great interest for the capture of CO2from various emission sources, which is essential to mitigate its detrimental environmental impact. In this direction, porous organic polymers (POPs) have emerged as prime candidatesowing to their structural tunability, physiochemical stability and high surface areas. In an effort to transfer an intrinsicproperty of a cyclotetrabenzoin-derived macrocycle—its high CO2affinity—into porous networks, herein we report the synthesis of three-dimensional (3D) macrocycle-based POPs through the polycondensation of an octaketone macrocycle with phenazine-2,3,7,8-tetraamine hydrochloride. This polycondensation was performedunder ionothermal conditions,using an eutectic saltmixture in the temperature range of 200 to 300oC. The resulting polymers, named 3D-mmPOPs,showedreaction temperature-dependent surface areas and gas uptake properties.3D-mmPOP-250 synthesized at 250 °C exhibited a surface area of up to 752 m2g−1andhigh microporosity originating from the macrocyclic units, thusresulting in an excellent CO2binding enthalpy of 40.6 kJ mol−1and CO2uptake capacitiesup to 3.51 mmol g−1at 273 K, 1.1bar.