Abstract: Broadband nonlinear optical (NLO) organic nanostructures exhibiting both ultrafast photoresponse and a large cross-section of 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 C 60-(antenna) x analogous compounds as branched triad C 60 (> DPAF-C 18)(> CPAF-C 2M) and tetrad C 60 (> DPAF-C 18)(> ...