Poly(aryleneethynylene) Type Polymers Containing a Ferrocene Unit in the π-Conjugated Main Chain. Preparation, Optical Properties, Redox Behavior, and Mössbauer Spectroscopic Analysis

Autor:	Tsukasa Maruyama, Kenji Kubota, Motomi Katada, Takakazu Yamamoto, Takashi Morikita
Rok vydání:	1997
Předmět:	chemistry.chemical_classification Condensation polymer Polymers and Plastics Organic Chemistry Infrared spectroscopy Polymer Conjugated system Inorganic Chemistry chemistry.chemical_compound Ferrocene chemistry Pyridine Polymer chemistry Materials Chemistry Absorption (chemistry) Benzene
Zdroj:	Macromolecules. 30:5390-5396
ISSN:	1520-5835 0024-9297
DOI:	10.1021/ma9704368
Popis:	Palladium-catalyzed polycondensation between diiodoferrocenes (1,1‘-diiodoferrocene and 1,6-diiodo-1‘,6‘-biferrocene) and diethynyl aromatic compounds HC⋮CArC⋮CH (e.g., 2,5-diethynylpyridine and 2,5-diethynyl-3-hexylthiophene) gives poly(aryleneethynylene) (PAE) type polymers containing the ferrocene unit in the π-conjugated main chain. The prepared polymers include (FcC⋮CPhC⋮C)n, PAE-Fc-1, (FcC⋮CPyC⋮C)n, PAE-Fc-2, and (FcC⋮ChexThC ⋮C)n, PAE-Fc-3 (Fc = 1,1‘-ferrocenylene; Ph = p-phenylene; Py = pyridine-2,5-diyl; hexTh = 3-hexylthiophene-2,5-diyl). 1H-NMR and IR spectra of the polymers are reasonable for their structures. The PAE type polymer containing the pyridine unit (PAE-Fc-2) is soluble in formic acid, and the polymer containing the hexylthiophene unit (PAE-Fc-3) is soluble in common organic solvents such as CHCl3, THF, and benzene. UV−visible spectra of the polymers exhibit a main π−π* absorption peak at about 330 nm and a d−d absorption peak at about 450 nm. The cyclic voltammogram of the polymers...
Databáze:	OpenAIRE
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