Perylene morphology

C. Woll, Growth and morphology of thin films of aromatic molecules on metals the case of perylene, Appl. Phys. A 82, 447-455 (2006). 

The possibility of preparing radical-cation salts of these nonplanar aromatic compounds is an interesting prospect. Many of these compounds contain pyrene and perylene substructures, both of which form well-defined salts when the procedures outlined and reviewed in the chapter by Enkel-mann (8) are used. However, the morphologies of crystals of radical-cation salts derived from the nonplanar compounds are difficult to envisage. Consequently, one cannot be certain that the resulting salts will have useful conducting properties. 

CORRELATION OF MORPHOLOGY AND ELECTRICAL CONDUCTION IN NANOSTRUCTURED PERYLENE PIGMENT FILMS... 

Surface morphology and electrical conduction in laser beam deposited perylene based thin films were investigated. It is found that the peak-to-peak value of the surface relief significantly increases with an increase of the substrate temperature at the deposition. Measuring of electrical properties by cyclic thermal desorption method shows that the hopping conductivity mechanism is realized in the films. The conductivity is intrinsic or impurity depending on the concentration of the adsorbed oxygen. 

G. Zucci, P. Viville, B. Donnio, A. Vlad, S. Melinte, M. Mondeshki, R. Graf, H.W. Spiess, Y.H. Geerts, R. Lazzaroni, Miscibility between differently shaped mesogens structural and morphological study of a phthalocyanine-perylene binary system. J. Phys. Chem. B 113, 5448-5457 (2009)... 

Yao, D. Tuteja, B. Sundararajan, P. R., Pigment-Mediated Nanoweb Morphology of Poly(dimethylsiloxane)-Substituted Perylene Bisimides. Macromolecules 2006, 39, 7786-7788. 

On a fundamental level, these results demonstrate the behavior of extremely small amounts of Ir and Ru at very positive potentials in a PEM envirOTunent The nature of these extraordinary OER activities needs further elucidatimi both from a practical and fundamental point of view. The thin film morphology could be one of the main factors affecting activity, first of all through the favorable surface to mass ratio and further due to the discontinuous nature of the thinner coatings. Finally, the observed interactions with the substrate and the NSTF perylene core could have an effect both on the activity and stability of the OER catalyst. 

Since perylene pigments are only sparingly soluble in common solvents, the solvent conditioning of crudes is commonly done under harsh conditions. For example, a common method to adjust the particle size and morphology of a perylene... 

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