The title polymers were prepd. by oxidative coupling of 2,5-diethynylthiophene (I) and were characterized by IR spectra, proton NMR spectra, and elemental anal. Poly[(2,5-thiophenediyl)ethynylene] (II) was prepd. by coupling I with 2,5-diiodothiophene catalyzed by Pd(PPh3)4 in diethylamine contg. CuI. Poly[ethynylene(2,5-thiophenediyl)ethynylene] (III) was prepd. by oxidative coupling of I with O and catalytic amts. of CuCl in pyridine at room temp. For both polymers, the extent of π-conjugation was reflected in their colors and electronic spectra which showed a large bathochromic shift of ...
Poly[(2,5-thiophenediyl)ethynylene] and poly[ethynylene(2,5-thiophenediyl)ethynylene]. Two new types of polymers containing thiophene rings linked by acetylene units / Cernia, Enrico; D'Ilario, Lucio; Ortaggi, Giancarlo; Scarsella, Marco; Scialis, Roberto; Sleiter, Giancarlo. - In: GAZZETTA CHIMICA ITALIANA. - ISSN 0016-5603. - STAMPA. - 119(5):(1989), pp. 309-310.
Poly[(2,5-thiophenediyl)ethynylene] and poly[ethynylene(2,5-thiophenediyl)ethynylene]. Two new types of polymers containing thiophene rings linked by acetylene units.
D'ILARIO, LUCIO;ORTAGGI, Giancarlo;SCARSELLA, Marco;
1989
Abstract
The title polymers were prepd. by oxidative coupling of 2,5-diethynylthiophene (I) and were characterized by IR spectra, proton NMR spectra, and elemental anal. Poly[(2,5-thiophenediyl)ethynylene] (II) was prepd. by coupling I with 2,5-diiodothiophene catalyzed by Pd(PPh3)4 in diethylamine contg. CuI. Poly[ethynylene(2,5-thiophenediyl)ethynylene] (III) was prepd. by oxidative coupling of I with O and catalytic amts. of CuCl in pyridine at room temp. For both polymers, the extent of π-conjugation was reflected in their colors and electronic spectra which showed a large bathochromic shift of ...I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
