Polarity formation in solid solutions: (4,4′-dinitrostilbene)1 – x(4-chloro-4′-nitrostilbene)x, 1 > x > 0

Abstract

Solid solution formation is a safe way to polarity formation in organic crystals. Molecular recognition at surfaces brings in orientational disorder, which can lead to grow-in polarity. Basic features of as-grown solid solutions are revealed by a new technique called phase sensitive second harmonic microscopy. Crystals are twinned and grow into a bi-polar structure.