Premium
Control of polymorphism by ‘tailor‐made’ polymeric crystallization auxiliaries. Preferential precipitation of a metastable polar form for second harmonic generation
Author(s) -
Staab Eugen,
Addadi Lia,
Leiserowitz Leslie,
Lahav Meir
Publication year - 1990
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19900020108
Subject(s) - polar , metastability , materials science , crystallization , polymorphism (computer science) , second harmonic generation , pyroelectricity , precipitation , crystallography , chemical physics , crystal (programming language) , chemical engineering , ferroelectricity , optics , optoelectronics , organic chemistry , physics , chemistry , biochemistry , astronomy , meteorology , genotype , engineering , gene , laser , dielectric , computer science , programming language
Polar crystals can display pyroelectricity, piezoelectricity and frequency doubling leading to second harmonic generation. These metastable polar polymorphs can be selectively precipitated to the exclusion of stable, non‐polar forms by the use of polymeric crystallization auxiliaries. The approach is based on the hypothesis that crystal nuclei assume structures very similar to those of the crystals into which they develop.