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À propos de : Synthesis ofDithieno[2,3-b:3‘,2‘-d]thiophenesBuilding Blocksfor Cross-Conjugated β-Oligothiophenes        

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  • Synthesis ofDithieno[2,3-b:3‘,2‘-d]thiophenesBuilding Blocksfor Cross-Conjugated β-Oligothiophenes
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  • Syntheses of annelated and functionalized β-trithiophenes(dithieno[2,3-b:3‘,2‘-d]thiophenes), building blocks for thehelically annelated, cross-conjugated β-oligothiophenes, arereported. UV−vis spectra reveal that the effect of octylsubstituents on the onset of electronic absorption in annelatedβ-trithiophenes is negligible compared to the effect of helicaldistortion in the higher β-oligothiophenes.
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