For a compound to absorb UV-Light at the longest wavelength and highest intensity, would it always be in regards to the length of the conjugated chain; thus the longest chain of conjugation= the best compound to absorb UV-light at the longest wavelength and the highest intensity? (Yes, but for comparison, it must be a linear (non-cyclic) conjugation. For example, graphene has a huge number of conjugated benzene rings, but stays colorless. - GS).