Bathochromic is a term that is often used in the field of chemistry. It refers to a shift in the wavelength of light that occurs when a chemical compound undergoes a change in its electronic structure. In this article, we will explore the definition and meaning of bathochromic, its origin, and its associations.
Definitions
The term bathochromic is derived from the Greek words “bathos,” meaning depth, and “chroma,” meaning color. In chemistry, bathochromic refers to a shift in the absorption spectrum of a molecule towards longer wavelengths. This shift is caused by changes in the electronic structure of the molecule. Bathochromic shifts are often observed in dyes and pigments.
Origin
The term bathochromic was first used in the early 20th century by German chemist Johannes Thiele. Thiele was studying the electronic structure of organic compounds and observed that certain compounds exhibited a shift in their absorption spectra towards longer wavelengths. He coined the term bathochromic to describe this phenomenon.
Meaning in different dictionaries
The term bathochromic is not commonly found in general dictionaries. However, it is listed in scientific dictionaries such as the Merriam-Webster Medical Dictionary and the McGraw-Hill Dictionary of Scientific and Technical Terms. In these dictionaries, bathochromic is defined as a shift in the absorption spectrum of a molecule towards longer wavelengths.
Associations
Bathochromic shifts are often observed in dyes and pigments. These shifts can be caused by a variety of factors, including changes in the electronic structure of the molecule, changes in the solvent environment, and changes in the pH of the solution. Bathochromic shifts are important in the field of color chemistry, as they can be used to modify the color of dyes and pigments.
Synonyms
There are several synonyms for bathochromic, including red shift, hypsochromic shift, and Stokes shift. These terms are often used interchangeably in the scientific literature.
Antonyms
The antonym of bathochromic is hypsochromic, which refers to a shift in the absorption spectrum towards shorter wavelengths. Hypsochromic shifts are often observed in compounds that have a higher degree of conjugation.
The same root words
The root words of bathochromic are “bathos” and “chroma.” Bathos refers to depth, while chroma refers to color. These root words are also found in other scientific terms, such as chromaticity and chromophore.
Example Sentences
- The bathochromic shift observed in the dye caused it to appear more red.
- The bathochromic properties of the pigment made it ideal for use in printing inks.
- The hypsochromic shift observed in the compound indicated that it had a higher degree of conjugation.