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π-Conjugated Polymers Prepared by Organometallic Polycondensation and Metal Complexes of the Polymers by Takakazu Yamamoto; Hisashi Nakajima; Naoki Hayashida; Kouichi Shiraishi; Hisashi Kokubo is a Materials Science article available to read on EtoBox.

What is π-Conjugated Polymers Prepared by Organometallic Polycondensation and Metal Complexes of the Polymers about?

Organometallic dehalogenative polycondensation of dihaloaromatic compounds produces various p-conjugated polymers. p-Conjugated polymers with nitrogen in the aromatic ring form metal complexes, and regioregular pconjugated polymers such as head-to-tail poly(3-hexylthiophene-2,5-diyl) (HT-P3HexTh), form a stacked structure. New examples are given in this paper. Poly(1,5-naphthyridine-2,6-diyl) (P(2,6-Nap)) formed a complex with Ru(bpy) 2 2+ (bpy = 2,2'-bipyridine). The molar ratio between the monomeric unit and Ru(bpy) 2 2+ in the formed complex was about 1 : 1, and the complex showed overlapped absorption bands in the region 370± 460 nm. Dehalogenative polycondensation of a porphyrinatozinc(II) complex having two 5-bromo-2-thienyl units at the 5,15-positions gave a new porphyrinatozinc(II) polymer. The polymer exhibited a strong B absorption band at 416 nm and two weak Q bands at 546 and 584 nm. The polymer emitted light at the onset position of the Q bands (591 nm) when irradiated with 424 nm UV light; this result indicated occurrence of a transfer of energy absorbed at the B band to an excited state concerned with the Q bands. A cast polymer film was electrochemically active both

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Author

Takakazu Yamamoto; Hisashi Nakajima; Naoki Hayashida; Kouichi Shiraishi; Hisashi Kokubo

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 1042-7147)

Published

2000

Language

EN

Field

Materials Science (Physical Sciences)