Definition

1. Noun:
   • The branch of chemistry concerned with the chemical effects of light: Photochemistry studies chemical reactions that are initiated or influenced by the absorption of light, typically ultraviolet, visible, or infrared radiation. It examines how light energy can break or form chemical bonds.

Usage Examples

• Noun:
  • The study of photosynthesis is a classic example of natural photochemistry.
  • Advances in photochemistry have led to better solar panels and more efficient photographic processes.
  • Her research in photochemistry focuses on how light degrades pharmaceutical compounds.

Advanced Usage

• "The photochemistry of": Used to specify the photochemical behavior of a particular substance or system.
  • The photochemistry of atmospheric ozone is crucial for understanding the ozone layer.
• "To undergo photochemistry": Describes a substance participating in a light-induced chemical change.
  • Certain dyes will undergo photochemistry and fade when exposed to strong sunlight.

Variants and Related Words

• Photochemical (adj): Relating to or caused by photochemistry.
  • A photochemical reaction is at the heart of this process.
• Photochemist (n): A scientist who specializes in photochemistry.
  • The photochemist developed a new light-sensitive catalyst.

Synonyms

• Actinochemistry (n, less common): The chemistry of radiant energy, especially light.
• Light-induced chemistry: A descriptive phrase for processes studied in photochemistry.

Related Phrases and Compounds

• Photochemical smog: A type of air pollution formed by the action of sunlight on pollutants like nitrogen oxides and hydrocarbons.
  • Los Angeles is often associated with photochemical smog.
• Photochemical reaction: A chemical reaction initiated by the absorption of light energy.
  • The fading of fabric is a slow photochemical reaction.

Noun

1. branch of chemistry that deals with the chemical action of light