| Abstract [eng] |
Natural discovered molecular machine makes scientists think about similar mechanisms creation in laboratories. Compounds of azochromofores can be equipped with two fixed trans-cis states. Molecular switches are promising systems for such a route, since they possess the ability to undergo reversible changes between different molecular states and accordingly molecular properties by excitation with light or other external stimuli. This, of course, did not go unnoticed optical media, diffraction optics, sensor developers. fact that the organic material, including azochromoforai has a high optical nonlinearity, opto- and electromechanical characteristics, technological advances in the synthesis of materials and their great diversity and cheapness of these compounds promote the research and application development areas. Materials such as gallium nitride (GaN) and gold (Au) occupies market and have a strong position in optoelectronics and investigations cover not only solar energy and lighting applications. Consequently dyes like 9-(2,3-epoxy)propyl-3-(4-nitrophenyl)azo-9H-carbazole (3a), 9-(2,3-epoxy)propyl-3-(2-chloro-4-nitrophenyl)azo-9H-carbazole (3b), (E,Z)-2-[4-oxo-5-(2-fenilhidrazono)-2-tioksotiazolidin-3-yl]acetic acid (4a) (E,Z)-2-[4-oxo-5- (2-fenilhidrazono)-2-tioksotiazolidin-3-yl]acetic acid (5a) (E,Z)-2-{5-[2-(9-ethyl-9H-carbazol-3yl)hydrazono]-4-oxo-2-tioksotiazolidin-3-yl}acetic acid (6a) were synthesized and evaluated for funcionalization of GaN and Au surfaces. . |
