Crystal engineered pigments

Imidazohne-Annellated Triphenedioxazine Pigments J51 20.3.3.3 Crystal Engineering Pigment Violet 57... 

Lincke, G. (2000). A review of thirty years of research on quinacridones. X-ray crystallography and crystal engineering. Dyes and Pigments, 44, 101-22. [259] Lincke, G. and Finzel, H.-U. (1996). Studies on the structure of alpha-quinacridone. Cryst. Res. Technol, 31,441-52. [263]... 

Creative concepts in crystal engineering make use of supramolecular synthons to define specific interactions in molecular solids, which may be employed to design crystal packings The synthon approach has been used to produce close packed structures, and, on the contrary, to build open network structures. In the packing motifs of high performance pigments several types of specific interactions (synthons) can be identified. 

Crystal Engineering on Imidazolone-Annellated Triphenedioxazine Pigments... 

Classification of composites by the phase inclusion size bears a philosophical aspect how small should a component in the matrix be not to make the term composite material so universal as to include in fact all materials Interatomic distances in molecules and crystals are of 1.5 10 m dimensionality, distances between iterative elements of the crystalline structure are 10 —10 m, while the size of the smallest intermolecular voids in polymers is 10 m. Note that mean nanoparticle size (plastic pigments are 10-8-10 m in size, the diameter of monocrystalline fibers or whiskers is 10 —10 m, glass microspheres are 10 —10 m) is commensurate with parameters of monolithic simple materials. This means that in the totality of engineering materials, nanocomposites occupy a place at the boundary between composite and simple materials. 

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