Synthesis of giant rigid π-conjugated dendrimers

[GRAPHICS] A novel family of giant pi-conjugated dendrimers (G0, G1, and G2) solely constructed by 5,5,10,10,15,15-hexahexyltruxene units has been developed in a convergent manner through a Suzuki cross-coupling reaction. The overall yields to such large rigid conjugated dendrimers are quite satisfying. The structures and purity of these nanosize rigid dendrimers are verified by H-1 and C-13 NMR, MALDI-TOF MS, and elemental analysis.