Other than 1,8-naphthalimide dyes, is there any other molecules which can absorb two-photons at a time with possible functional groups which allows modifications
In a molecule in which the HOMO and LUMO are of the same symmetry, a single photon transition is forbidden, but a 2 photon transition is allowed, and therefore more probable at high intensities.
Thank you very much. But i am wondering what decides the GM value of a two photon absorbing dye. Does the quantum yield of the respective dye has any relation to GM value?