Optical properties of oligo(2,3-dioxyfunctionalized)naphthalenes

The properties of two series of oligo(2,3-dioxyfunctionalized)naphthalenes which are connected at the 1,4-positions, that is, methoxy derivatives 1–4 and derivatives that possess two pyrene groups on the central scaffolding oxygen functions 5–8, are described. In 1–4, the fluorescence quantum yields increased by about 20–80% as the number of naphthalene units increased. The intramolecular energy transfer quantum yields of 5–8 were around 20% regardless of the number of naphthalene units.