equivalent of dppp gave rise to only 85% Ar/H terminated polymers) [168]. All this
research suggests that for an efficient external initiation polymerization reaction,
the presence of a methyl substituent ortho to the Ni group on the aromatic ring of
the initiator, the presence of a dppp ligand on the nickel atom, and a chloro
substituent on the Ni atom increase the efficiency of polymerization.
Scheme 9 External initiation of P3HT as used by the groups of Kiriy, Luscombe, and Nesterov
[154, 159–161, 164, 165].
Progress in the Synthesis of Poly(3-hexylthiophene)
19
research suggests that for an efficient external initiation polymerization reaction,
the presence of a methyl substituent ortho to the Ni group on the aromatic ring of
the initiator, the presence of a dppp ligand on the nickel atom, and a chloro
substituent on the Ni atom increase the efficiency of polymerization.
Scheme 9 External initiation of P3HT as used by the groups of Kiriy, Luscombe, and Nesterov
[154, 159–161, 164, 165].
Progress in the Synthesis of Poly(3-hexylthiophene)
19