Poly tetrahydropyrene s

The monomer 192 is a mixture of cis- and trans-diastereomers, which can be separated, thus making stereoregular polymers accessible. Such polymers might show different properties, due to different stacking of the polymer chains. 

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Alkyl-Bridged Pofy(p-pher ene)s. More conclusive results have been obtained concerning the preparation of rigidihed poly(p-phenylene)s. One first approach in this direction involved the synthesis of poly(tetrahydropyrene) from a dibromo precursor [277] (Fig. 42). 

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