Optical limiting properties of [60]fullerene derivatives

Optical limiting properties of methano[60]fullerene and pyrrolidino[60]fullerene derivatives in room-temperature solutions are studied systematically. The results show that the derivatives are very similar to the parent [60]fullerene in optical limiting, despite the fact that the linear absorption and emission properties of the derivatives are very different from those of [60]fullerene. The optical limiting properties of the [60]fullerene derivatives are discussed in the context of nonlinear optical effects due to reverse saturable absorption.