Preparation, structure analysis and performance characterization of a novel organic second-order nonlinear optical crystal DOBT

Recent Advances in the Asymmetric Growth of Organic Polar Crystals: A Review

“…The SXRD test results show that the DOBT crystals belong to the monoclinic crystal system and the space group is a noncentrosymmetric P 2 1 series, possessing the potential to generate second-order nonlinearity. Meanwhile, the experimentally obtained PXRD spectrum is consistent with the theoretical structure, proving the high purity of the raw materials …”

“…(a) Crystal structure diagrams of the DOBT crystal obtained by SXRD and PXRD experiments. The crystal system is monoclinic with the noncentrosymmetric P 2 1 space group . (b) FT-IR and FT-Raman spectra of a 4-dimethylamino-4′-nitrobiphenyl crystal .…”

“…Meanwhile, the experimentally obtained PXRD spectrum is consistent with the theoretical structure, proving the high purity of the raw materials. 51 3.1.2. Vibrational Spectroscopy.…”

“…For polar crystals, their good nonlinear optical, photoelectric and mechanical properties are largely dependent on the perfection of the single crystal, so it is necessary to conduct chemical etching measurements on the growing crystals under an optical microscope to study the crystal growth mechanism, microstructure defects, and dislocations. 51 Figure 5d gives microscopic pictures of a 3-(4-fluorophenyl)-1-(4-methoxyphenyl) (FMP) single crystal before and after etching. It is easy to observe that with the increase of corrosion time, the corrosion pit presents a more obvious rhombus shape.…”

New organic 4‐(4‐methoxystyryl)‐1‐methylpyridinium crystals for nonlinear optical applications

“…Furthermore, in many cationic chromophores, methoxy (or dimethoxy) groups acting as electron donors have been introduced, and the corresponding organic salt crystals have often exhibited large macroscopic second-order nonlinear optical coefficients. [17][18][19][20][21][22][23][24][25][26] Therefore, methoxy-containing cationic chromophores are of great interest for second-order nonlinear optical applications.…”