A series of new hyperbranched poly(aryleneethynylene)s are synthesized by the copolycyclotrimerizations of tetraynes (Ⅰ and Ⅱ) with aliphatic monoynes (A-C) c
New hyperbranched polyphenylenes with high molecular weights are synthesized by the copolycyclotrimerizations of 1,4-diethynylbenzene (I) with phenylacetylene (