3D-Conformer of Tris[60]fullerenylated cis-Tris(diphenylamino-fluorene) as Photoswitchable Charge-Polarizer on GHz-Responsive Trilayered Core-Shell Dielectric Nanoparticles

Novel 3D-configurated stereoisomers cis-cup-tris[C(60)>(DPAF-C(9))] and trans-chair-tris[C(60)>(DPAF-C(9))] were designed and synthesized in good yields. The former, with three C(60)> cages per molecule facing at the same side of the geometrical molecular cup-shape, was proposed to provide excellent binding interaction forces at the gold surface of core-shell γ-FeO(x)@AuNP nanoparticles and to direct the subsequent formation of a fullerene cage array (defined as fullerosome). Upon photoactivation of the Au-layer and cis-cup-tris[C(60)>(DPAF-C(9))] itself, the degree of photoinduced intramolecular e(−)-transfer from DPAF to a C(60)> moiety was found to be largely enhanced by the accumulated plasmonic resonance energy at the near-field surface. Distribution of resulting negative charges along the outer (C(60)>)-derived fullerosome shell layer of the trilayered NPs was correlated with the detected photoswitchable dielectric amplification phenomena using white LED light at 1.0 GHz.