Soluble polymers with constant π-conjugation length: polymers containing thiophene tetramers and hexamers

Sato, Masaaki; Sakamoto, Maki; Miwa, Masayuki; Hiroi, Masao

doi:10.1016/s0032-3861(99)00777-6

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…The synthesis and characterization of PSE have been reported earlier. 10 All other chemicals were of reagent grade or better. Tetraethylammonium perchlorate (Et 4 NClO 4 ) from Katayama Chemicals was used as a supporting electrolyte after being purified by recrystallization from ethanol and dried under vacuum at 70 uC.…”

Section: Methodsmentioning

confidence: 99%

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et al. 2001

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Section: Methodsmentioning

confidence: 99%

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et al. 2001

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“…Anodic coupling of the alkane-bridged bis-terthienylethane has been previously performed and the corresponding polymer with tetrahexyl-substituted sexithiophene moieties has been subsequently produced via reductive coupling . Both the nonsubstituted and the alkyl-substituted polymers have undergone potential-controlled conductivity investigations.…”

Section: Introductionmentioning

confidence: 99%

“…Anodic coupling of the alkane-bridged bis-terthienylethane has been previously performed 9 and the corresponding polymer with tetrahexyl-substituted sexithiophene moieties has been subsequently produced via reductive coupling. 10 Both the nonsubstituted 9 and the alkyl-substituted 11 polymers have undergone potential-controlled conductivity investigations. We have here considered the disulfide as the bridge connecting sexithiophene moieties in a polymer for a possible participation of the electron-rich S-S moiety to the conjugated path.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical, Magnetic, and Electrical Properties of α,ω-Capped Sexithiophene Films. Part 3. Conduction in Poly(bis-terthienyl-B)s (B = Ethane, Disulfide, Diacetylene, Acetylene, Ethylene)

et al. 2008

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Electrochemical oxidation of bis-terthienyl-B (B = ethane, disulfide, diacetylene, acetylene, ethylene) has been investigated. Monomers without and with 3,3′′-dialkylsubstitution are regularly coupled to polymers alternating sexithiophene and B moieties. The corresponding terthienyl homopolymers have also been produced for comparison. The polymers obtained are characterized by cyclic voltammetry, EQCM, UV−vis, and FTIR spectroscopy, in situ ESR and in situ conductivity. The conductivities of p-doped polymers with ethane or disulfide bridges fall in a narrow range (1−5 × 10−2 S cm−1) and are practically the same as those of α,ω-dimethylsexithiophene (1 × 10−2 S cm−1), suggesting that conduction proceeds without the help of the links via a direct redox hopping between sexithiophene blocks of adjacent polymer chains. In the cases of diacetylene and acetylene, conduction changes from redox to bipolaron-type but only in the case of ethylene the conductivity jumps to high values (1−5 S cm−1) corresponding to those of the polymers without the bridging moiety B, i.e., with shortened thiophene rings. DFT calculations of the bridge energy levels account for this result.

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Liquid‐Crystal Templating of Conducting Polymers

Hulvat¹,

Stupp²

2003

Angewandte Chemie

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Nachbildung von Textur und Anisotropie des Templats durch Elektropolymerisation von 3,4‐Ethyldioxythiophen (EDOT) innerhalb eines hexagonalen lyotropen Flüssigkristalls führte zur Bildung von doppelbrechenden leitfähigen Polymerfilmen (siehe Bild). Durch Verwendung eines selbstorganisierten Templats zur Steuerung der Molekülorientierung könnten leitfähige Polymere mit verbesserten elektronischen und optischen Eigenschaften erhalten werden.

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Soluble polymers with constant π-conjugation length: polymers containing thiophene tetramers and hexamers

Cited by 6 publications

References 25 publications

Untitled

Untitled

Electrochemical, Magnetic, and Electrical Properties of α,ω-Capped Sexithiophene Films. Part 3. Conduction in Poly(bis-terthienyl-B)s (B = Ethane, Disulfide, Diacetylene, Acetylene, Ethylene)

Liquid‐Crystal Templating of Conducting Polymers

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