Chemistry Letters, Vol.47, No.9, 1143-1146, 2018
CO2 Sorption of Layered Hydrogen-bonded Organic Framework Causes Reversible Structural Changes Involving Four Different Crystalline States under Ambient Pressure
A layered hydrogen-bonded organic framework (T12-apo) composed of a dehydrotribenzo[12]annulene derivative T12 underwent as many as four states (S-1 to -4) reversibly during an hysteric CO2 sorption process at 195 K. The structural changes observed were due to a degree of freedom between layers, allowing slipping of the layers and an increase in the interlayer distance.