Azobenzolszármazékok

Azobenzolszármazékok is the Hungarian term for azobenzene derivatives. Azobenzene is an organic compound with the formula C12H10N2. It consists of two phenyl rings connected by a N=N double bond. Azobenzene derivatives are compounds where one or more hydrogen atoms on the phenyl rings of azobenzene are replaced by other atoms or groups. These substituents can significantly alter the chemical and physical properties of the parent azobenzene molecule, influencing its color, solubility, and reactivity.

The azobenzene core is known for its photophysical properties, particularly its ability to undergo reversible *cis-trans* isomerization upon irradiation with light of specific wavelengths. This photoisomerization is a key feature of azobenzene derivatives and makes them valuable in various applications. For instance, they are used as photochromic materials, which change color when exposed to light. They also find use in the development of molecular switches, where light can be used to control the behavior of molecules.

In chemistry, azobenzene derivatives serve as building blocks for more complex molecules, including dyes, pigments, and polymers. The azo group (-N=N-) is a chromophore, meaning it absorbs light and contributes to the color of the compound. The specific color and intensity of the color can be tuned by modifying the substituents on the phenyl rings. Research continues into novel azobenzene derivatives for applications in areas such as nonlinear optics, sensors, and drug delivery systems. The synthesis of these derivatives typically involves the coupling of two aniline derivatives or the reduction of nitrobenzene compounds.