Synthesis and characterization of poly[3-(butylthio)thiophene]: a regioregular head-to-tail polymer

Goldoni, Francesca; Iarossi, Dario; Mucci, Adele; Schenetti, Luisa; Zambianchi, Massimo

doi:10.1039/a606771i

Cited by 41 publications

(50 citation statements)

References 18 publications

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“…The film absorption spectrum is coincident with the early reported result where a sharp X-ray diffraction (XRD) peak was observed at 2u ¼ 4.88. [26] The optical band-gaps (E opt g ) estimated from the absorption band edge of the polymer films are listed in Table 1, they are 1.85, 1.54, 1.82, and 1.83 eV for P3HT, P3HOT, P3HST, and P3HST-co-Th, respectively.…”

Section: Thermal Stabilitymentioning

confidence: 99%

“…The purpose of this work is to investigate the effect of the sulphur atom with the larger size in the electron-donating alkylthio side chain on the absorption and electronic energy levels of the polythiophene derivatives in comparison with P3HOT and P3HT, since alkylthio groups show the effect of steric hindrance which affects the absorption and electronic properties of conjugated polymers. [23][24][25][26] It was found that the alkylthio substituent red-shifted the absorption of polythiophene and the HOMO energy level of polythiophene decreased. Both the red-shifted absorption and decreased HOMO level is desirable for application as donor materials in PSCs.…”

Section: Introductionmentioning

confidence: 99%

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Alkylthio‐Substituted Polythiophene: Absorption and Photovoltaic Properties

Huo

Zhou

2009

Macromol. Rapid Commun.

105

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Two polythiophene derivatives with electron-donating alkylthio side chains, poly[(3-hexylthio)thiophene] (P3HST) and poly[(3-hexylthio)thiophene-alt-thiophene] (P3HST-co-Th) have been synthesized and characterized. Both P3HST and P3HST-co-Th show broader absorption peaks than poly(3-hexylthiophene). Meanwhile, the alkylthio side chains decrease the HOMO energy level of the polymers, which benefits the higher open circuit voltage of the polymer solar cells (PSCs) based on the polymer as donor. PSCs have been fabricated with the polymers as donor and [6,6]-phenyl C61 butyric acid methyl ester as acceptor (1: 1, w/w). The devices based on P3HST and P3HST-co-Th show an open circuit voltage of 0.63 V, and a power conversion efficiency of 0.34% and 0.5%, respectively, under the illumination of AM1.5, 80 mW · cm(-2) .

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Section: Thermal Stabilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Alkylthio‐Substituted Polythiophene: Absorption and Photovoltaic Properties

Huo

Zhou

2009

Macromol. Rapid Commun.

105

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“…PTs hold outstanding thermal and environmental stability and electrical conductivity when doped, but their processability and properties are strongly affected by the structure and chemical modifications . Consequently, materials with tailor‐made properties can be designed by inserting substituents, such as alkyl groups, in the three position of a thiophene ring in order to obtain configurationally regular and soluble polymeric chains . Poly(3‐alkylthiophene)s (P3ATs) and, in particular, regioregular poly(3‐hexylthiophene) (P3HT) have been used in a plethora of electronic and optoelectronic device applications.…”

Section: Introductionmentioning

confidence: 99%

Electrospun poly(3-hexylthiophene)/poly(ethylene oxide)/graphene oxide composite nanofibers: effects of graphene oxide reduction

Pierini

Lanzi

Nakielski

et al. 2016

Polym. Adv. Technol.

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a In this article, we report on the production by electrospinning of P3HT/PEO, P3HT/PEO/GO, and P3HT/PEO/rGO nanofibers in which the filler is homogeneously dispersed and parallel oriented along the fibers axis. The effect of nanofillers' presence inside nanofibers and GO reduction was studied, in order to reveal the influence of the new hierarchical structure on the electrical conductivity and mechanical properties. An in-depth characterization of the purity and regioregularity of the starting P3HT as well as the morphology and chemical structure of GO and rGO was carried out. The morphology of the electrospun nanofibers was examined by both scanning and transmission electron microscopy. The fibrous nanocomposites are also characterized by differential scanning calorimetry to investigate their chemical structure and polymer chains arrangements. Finally, the electrical conductivity of the electrospun fibers and the elastic modulus of the single fibers are evaluated using a four-point probe method and atomic force microscopy nanoindentation, respectively. The electrospun materials crystallinity as well as the elastic modulus increase with the addition of the nanofillers while the electrical conductivity is positively influenced by the GO reduction.

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“…The absence of fine structure is sim- ilar to that observed for the PT with an alkylthio side chain. 16 In n-decanol (a poor solvent for the material) a shoulder arises at about 600 nm, similar to the one observed for the PT with an alkylthio side chain. The CD effect of PTTVb in ndecanol is very low in intensity.…”

Section: Uv-vis and CD Spectroscopymentioning

confidence: 58%