Growth from Solutions, Structure, and Photoluminescence of Single-Crystal Plates of p-Terphenyl and Its Trimethylsilyl Derivative

摘要

Samples of single-crystal plates of p-terphenyl (3?) and its derivative with terminal substituents-Si(CH3)(3) (TMS-3P-TMS), up to 25-30 mm in size and 400 m thick, have been obtained for the first time by the solvent-antisolvent growth method. The crystal structure at temperatures of 293 and 85 K is refined for 3? and solved (for the first time) for TMS-3P-TMS using X-ray diffraction. The habit of crystals and their surface morphology are investigated by methods of optical and laser confocal microscopy. The influence of substituent terminal groups -Si(CH3)(3) on the growth and structure of TMS-3P-TMS crystals is analyzed based on experimental data. The optical absorption and photoluminescence spectra of solutions and crystalline samples are investigated.