Features of the Growth of p-Quaterphenyl Crystalline Films from Solution Drops on Substrates

The features of the nucleation and growth of p-quaterphenyl crystal films from solution drops on substrates are studied under conditions of slow isothermal evaporation of the solvent. Studies on the influence of temperature factor show the largest crystal films are formed at a temperature of about 45°C. It is found that the use of a high-boiling solvent with a high surface tension (1,2,4-trichlorobenzene) makes it possible to form single-crystal films of a much larger scale than when using a low-boiling solvent with a lower surface tension (toluene). The surface properties of solutions in comparison with pure solvents are investigated and analyzed by the hanging drop method and the sessile drop method.