Abstract:
A composition comprises a compound and a solvent. The compound comprises a carbon-carbon triple bond-containing group, and at least one partial structure having an aromatic ring. A total number of benzene nuclei constituting the aromatic ring in the at least one partial structure is no less than 4. The at least one partial structure preferably comprises a partial structure represented by formula (1). The sum of p1, p2, p3 and p4 is preferably no less than 1. At least one of R1 to R4 preferably represents a monovalent carbon-carbon triple bond-containing group. The at least one partial structure also preferably comprises a partial structure represented by formula (2). The sum of q1, q2, q3 and q4 is preferably no less than 1. At least one of R5 to R8 preferably represents a monovalent carbon-carbon triple bond-containing group.
Abstract:
A composition for forming a resist underlayer film includes a polymer having a structural unit represented by a formula (1). Ar1, Ar2, Ar3 and Ar4 each independently represent a divalent aromatic hydrocarbon group or a divalent heteroaromatic group. A part or all of hydrogen atoms included in the divalent aromatic hydrocarbon group and the divalent heteroaromatic group represented by Ar1, Ar2, Ar3 or Ar4 may be substituted. R1 represents a single bond or a divalent hydrocarbon group having 1 to 20 carbon atoms. A part or all of hydrogen atoms included in the divalent hydrocarbon group represented by R1 may be substituted. The divalent hydrocarbon group represented by R1 may have an ester group, an ether group or a carbonyl group in a structure thereof. Y represents a carbonyl group or a sulfonyl group. m is 0 or 1. n is 0 or 1.