In this Activity, students investigate the fluorescence of highlighter marker ink and the principles employed in studying fluorescent molecules using a homemade fluorometer and different colored filters. This Activity helps students understand how certain molecules interact with light, and that fluorescence is one of the ways these molecules can lose their excess energy after they absorb light energy.
M. Farooq Wahab, J. Chem. Educ. 2007, 84, p1312A.