A polymer, a hardmask composition, and a method of forming patterns, the polymer including structural units obtained by a reaction of a reaction mixture that includes a substituted or unsubstituted indole compound, a first aromatic aldehyde compound including a substituted or unsubstituted C3 to C20 branched alkyl group thereon, and a second aromatic aldehyde compound that is different from the first aromatic aldehyde compound.
                            一种聚合物、一种硬掩膜组合物和一种形成图案的方法,该聚合物包括通过反应混合物反应获得的结构单元,该反应混合物包括取代或未取代的
吲哚化合物、第一芳香醛化合物(其上包括取代或未取代的 C3 至 C20 支链烷基)和不同于第一芳香醛化合物的第二芳香醛化合物。