CRYSTAL GROWTH OF A PROMISING NONLINEAR OPTICAL MATERIAL - 2-AMINO-5-NITROPYRIDINIUM CHLORIDE

摘要

The experimental conditions of the synthesis and crystal growth of the 2-amino-5-nitropyridinium chloride (2A5NPCl) salt have been precisely determined, leading to the synthesis of large and optically clear crystals. Synchrotron X-ray diffraction topography shows that the crystalline quality of the samples is good and that most of the defects (grown-in dislocations) originate from the seed. This organic-inorganic phase, which exhibits a high nonlinear optical efficiency (powder tests), a large transparency range (410-2000 nm), suitable thermal, chemical, and mechanical stabilities, and a bulky habit, is a promising material for nonlinear optics. (C) 1997 Academic Press. [References: 25]