2,3-diethynyl-benzo[b]biphenylene

3-(3-ethynyl-benzo[b]biphenylen-2-yl)-prop-2-yn-1-ol

(3-(trimethylsilyl)benzo[b]benzo[3,4]cyclobuta[1,2-h]biphenylen-2-yl)methanol

ethyl 9,9-dimethyl-3-(3-(2-(ethoxycarbonyl)ethynyl)napht-2-yl)-4-(2-(2-(dimethyl-(2-phenylethynyl)silyl)phenyl)ethynyl)-1-phenyl-silafluorene-2-carboxylate