Noun
Any chemical group or residue (as NO2; N2; or O2) which imparts some decided color to the compound of which it is an ingredient.
Source: Webster's dictionaryA UVA-PF value of 10.7 was achieved with the PPD response compared to the JCIA standard containing over 8 percent total UVA/ UVB chromophore that measured 4.3. Source: Internet
Some of these cages contain polysulfide ( Smain ) groups that are the chromophore (color centre). Source: Internet
The usual blue ultramarine is thought to contain Smain as the chromophore. Source: Internet
It is based on a red shifted tris-resorcinol-triazine chromophore. Source: Internet