Aging effect on the co-crystallization behavior of the donor and acceptor crystals in aqueous dispersions

Abstract

Charge-transfer (CT) co-crystals composed of organic donor and acceptor molecules are attractive materials from both basic and applied perspectives. One of the most fascinating protocols for the formation of a...

Synthesis of highly stable luminescent molecular crystals based on (E)-2-((3-(ethoxycarbonyl)-5-methyl-4-phenylthiophen-2-yl)amino)-4-oxo-4-(p-tolyl)but-2-enoic acid

“…Demonstrating unprecedented efficiency, light spectrum control [1,3], scalability [2], flexibility [9] and enhanced time of emission (phosphorescence) [5,7,[10][11][12], MCs still suffer from aging and poor structural stability [8,11,13,14] at ambient conditions (in air atmosphere and room temperature). The reasons for this are, on the one hand, the violation of the integrity of the organic mol-ecules during long-term excitation.…”

“…This is due to the heatand photoinduced destruction of certain chemical bonds. On the other hand, the distortion of the weak intermolecular interactions under normal conditions disrupts the aggregation of molecules and negatively affects both the emission spectrum and the luminescence efficiency [13,14]. What is important is that the latter effect is observed at lower excitation parameters at ambient conditions and, hence, more significantly affects the working capacity of corresponding organic devices.…”