A compound represented by the following general formula (1) is used as a precursor of a graphene nanoribbon: ##STR00001##
where X's are independent of each other and are leaving groups, R's are independent of one another and are hydrogen atoms, fluorine atoms, chlorine atoms, or 1-12C straight-chain, branched-chain, or cyclic alkyl groups, and each of p, q, r, and s is an integer in the range of 0 to 5.

A compound represented by the following general formula (1) is used as a precursor of a graphene nanoribbon: ##STR00001##
where X's are independent of each other and are leaving groups, R's are independent of one another and are hydrogen atoms, fluorine atoms, chlorine atoms, or 1-12C straight-chain, branched-chain, or cyclic alkyl groups, and each of p, q, r, and s is an integer in the range of 0 to 5.

A compound represented by the following general formula (1) is used as a precursor of a graphene nanoribbon:

##STR00001##

where X's are independent of each other and are leaving groups, R's are independent of one another and are hydrogen atoms, fluorine atoms, chlorine atoms, or 1-12C straight-chain, branched-chain, or cyclic alkyl groups, and each of p, q, r, and s is an integer in the range of 0 to 5.