Fotoreaktív

Fotoreaktív is a term derived from the Greek word "photo" meaning light and the Latin word "reactivus" meaning to respond. It describes a substance or process that undergoes a chemical change when exposed to light. This change can be a transformation into a different chemical compound, a change in physical properties, or a combination of both. The energy from photons in the light source is absorbed by the molecules of the fotoreaktív substance, initiating the chemical reaction.

Many natural and synthetic materials exhibit fotoreaktív properties. For example, photosynthesis in plants is a fundamental biological process that relies on fotoreaktivitatea of chlorophyll to convert light energy into chemical energy. In everyday life, fading of dyes in fabrics when exposed to sunlight is a common manifestation of fotoreaktivitatea. Many photographic processes historically utilized fotoreaktív compounds that changed color or formed an image upon exposure to light.

The study of fotoreaktivitatea is crucial in various scientific fields, including chemistry, physics, and materials science. It has led to the development of numerous technologies, such as UV-curable coatings, photochromic lenses that darken in sunlight, and advanced solar cells. Understanding the specific wavelengths of light that trigger a reaction and the nature of the resulting chemical transformation are key aspects of fotoreaktív research.