Zone casting - a universal method of preparing oriented anisotropic layers of organic materials

• Autorzy: Tracz, A. , Pakula, T. , Jeszka, J. K.
• Języki publikacji: EN

Abstrakty

EN

A method for the preparation of oriented, anisotropic layers of soluble molecular materials on substrates that were not pre-oriented (so-called zone casting) is presented. The method consists in casting a suitable solution, continuously supplied by a nozzle, onto a moving substrate. Solvent evaporation takes place from the surface of the meniscus formed between a special flat nozzle and the substrate. Due to a gradient of the solute concentration, its solidification proceeds in a narrow zone under highly anisotropic conditions. The conditions of stationary deposition and the influence of various parameters on the process, such as casting speed, the diffusion coefficient, evaporation rate, are discussed. It is shown that the zone casting can be used to obtain anisotropic layers of many different low-molecular-weight and macromolecular materials.

Słowa kluczowe

EN

zone casting; solution processing; orientation; anisotropy

• Czasopismo: Materials Science Poland
• Rocznik: 2004
• Tom: Vol. 22, No. 4
• Strony: 415--421
• Opis fizyczny: Bibliogr. 10 poz.

Twórcy

autor

Tracz, A.

• Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, ul. Sienkiewicza 112, 90-364 Łódź, Poland,

autor

Pakula, T.

• Max-Planck-Institute for Polymer Research, Mainz, Germany

autor

Jeszka, J. K.

• Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, ul. Sienkiewicza 112, 90-364 Łódź, Poland

Bibliografia

• [1] TRACZ A., ULAŃSKI J., PAKULA T., KRYSZEWSKI M., Polish Patent P-131986 (1986).
• [2] BURDA L., TRACZ A., PAKULA T., ULANSKI J., KRYSZEWSKI M., J. Phys. D: Appl. Phys., 16 (1983), 1737.
• [3] TRACZ A., EL SHAFEE E., ULANSKI J., JESZKA J.K., KRYSZEWSKI M., Mater. Sci., 14 (1988), 181.
• [4] TRACZ A., EL SHAFEE E., ULANSKI J., JESZKA J.K., KRYSZEWSKI M., [in:] H. Kutzmany, M. Mehring, S. Roth (Eds.), Electronic Properties of Conjugated Polymers, Springer-Verlag, Berlin, 1989, p. 442–447.
• [5] TRACZ A., EL SHAFEE E., ULANSKI J., JESZKA J.K., KRYSZEWSKI M., Synth. Met., 37 (1990), 175.
• [6] TRACZ A., JESZKA J.K., WATSON M.D., PISULA W., MÜLLEN K., PAKULA T., J. Am. Chem. Soc., 125 (2003), 1682.
• [7] MISKIEWICZ P., RYBAK A., JUNG J., GLOWACKI I., ULANSKI J., GEERTS Y., WATSON M., MÜLLEN K., Synth. Met., 137 (2003), 905.
• [8] PIRIS J., PISULA W., TRACZ A., PAKULA T.,MÜLLEN K.,WARMAN J.M., Liq. Cryst., 31 (2004), 993.
• [9] PISULA W., MENON A., STEPPUTAT M., LIEBERWIRTH I., KOLB U., TRACZ A., PAKULA T., MÜLLEN K., Adv. Mater., accepted )2005).
• [10] MIŚKIEWICZ P., RYBAK A., JUNG J., GLOWACKI I., ULAŃSKI J., TRACZ A., PISULA W., PAKULA T., MÜLLEN K., PFLEGER J., Conference on New Concepts and Materials for Molecular Electronics and Nanotechnology, Poznań 2004, Conf. Abstracts, p. 20.