Synthesis and characterization of highly photoresponsive fullerenyl dyads with a close chromophore antenna–C60 contact and effective photodynamic potential
two-photon absorption throughout a wide NIR spectrum may make them suitable for use as nonlinear biophotonic materials. We report here the synthesis and characterization of two C₆₀-(antenna)(x) analogous compounds as branched triad C₆₀(>DPAF-C₁₈)(>CPAF-C(2M)) and tetrad C₆₀(>DPAF-C₁₈)(>CPAF-C(2M))₂ nanostructures. These compounds showed approximately equal extinction coefficients of optical absorption over