Highly conjugated organic compounds are often colored or fluorescent. Their lambda max absorption wavelength is determined via UV-vis to examine the color or fluorescence. This lambda max is then used to excite the compound and measure its fluorescence. UV-vis titrations are also used to determine the binding interaction between metals and ligands in metal complexes via changes in absorption wavelengths.

1. Highly conjugated organic compounds are normally colored or fluorescent. In order
to examine the nature of the color or the fluorescence we need lamda max, the maximum
wavelength at will a certain compound absorbs light. Once we find that wavelength we excite at
that wavelength to determine the fluorescence. With regard to metal complexes chemists use
UV-vis to determine the binding interaction between a metal and a ligand (this is called a metal
complex). This is normally done through UV-vis titrations. I can elaborate more but I think the
question is answered.
Solution
Highly conjugated organic compounds are normally colored or fluorescent. In order
to examine the nature of the color or the fluorescence we need lamda max, the maximum
wavelength at will a certain compound absorbs light. Once we find that wavelength we excite at
that wavelength to determine the fluorescence. With regard to metal complexes chemists use
UV-vis to determine the binding interaction between a metal and a ligand (this is called a metal
complex). This is normally done through UV-vis titrations. I can elaborate more but I think the
question is answered.