Series of charge transfer complexes obtained as crystals in a confined environment

Abstract

1,2,4,5-tetracyano benzene (TCNB) as piA molecule and a series of p-dihydroquinones (H2Qs) as piD counterparts. Additionally to the classical co-evaporation techniques, we obtained CTCs in less than an hour, in...

Pressure-Induced Amidine Formation via Side-Chain Polymerization in a Charge-Transfer Cocrystal

“…Combined thermogravimetric analysis/differential scanning calorimetry (TGA/DSC) carried out on the recovered PE press sample supports the formation of an extended polymer via enhanced thermal stability (Figure S12). The starting molecular cocrystal shows a two-step decomposition process consistent with the behavior of previously reported TCNB cocrystals . However, the recovered PE press sample remains thermally stable over this entire temperature range and does not decompose until >450 °C, aside from minor mass loss up to 100 °C, which is attributed to weakly absorbed water.…”

“…The starting molecular cocrystal shows a two-step decomposition process consistent with the behavior of previously reported TCNB cocrystals. 50 However, the recovered PE press sample remains thermally stable over this entire temperature range and does not decompose until >450 °C, aside from minor mass loss up to 100 °C, which is attributed to weakly absorbed water. The enhanced thermal stability of the recovered product clearly demonstrates a permanent pressure-induced chemical transformation resulting in the formation of a more thermally stable product.…”