Electrochemistry and photoelectrochemistry of two donor–acceptor polythiophene polymers with acceptor moieties in the main chain

Tindale, Jocelyn J.; Holm, Hayley; Workentin, Mark S.; Semenikhin, Oleg A.

doi:10.1016/j.jelechem.2007.10.003

Cited by 20 publications

(12 citation statements)

References 54 publications

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“…ThP.17 4 [16,9]. We observe a cathodic photocurrent under negatives potential confirming that under these conditions the polymer behaves as p-type semiconductor.…”

Section: Photocurrentsupporting

confidence: 74%

Optical and photo-electrochemical characterization of organic-inorganic photosensitive materials

Elhames

Nessark

Gîrtan³

et al. 2009

2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW)

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This work reports on the optical and photoelectrochemical properties of polybithiophene (PBiTh) films electrochemically synthesized onto indium-tin oxide (ITO) substrates and modified with incorporation of indium phosphide (InP) when present in solution during polymerization. The properties of the composite layers were studied by electrochemical method (cyclic voltammetry), scanning electron microscopy (SEM), UV-vis spectroscopy and photocurrent measurements. From UV-vis spectroscopy studies, the absorbance of the composite is larger than the polybithiophene absorbance in the UV region. The cathodic photocurrent reflected the p-type semiconductor behaviour of the electrosynthesized polybiththiophenes. Addition of InP semiconductors the improves the photocurrent at cathodic potential (~ 4 µA/cm 2 at 100 mW/cm 2 ) indicating the acceptor molecule acts as an exciton dissociation center, improving the number of charge carriers transported through the polymer to reach the solid-liquid electrolyte interface. It was found that the photosensitive composite material (PBiTh-InP) has good photoelectrochemical and optical properties.

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“…ThP.17 4 [16,9]. We observe a cathodic photocurrent under negatives potential confirming that under these conditions the polymer behaves as p-type semiconductor.…”

Section: Photocurrentsupporting

confidence: 74%

Optical and photo-electrochemical characterization of organic-inorganic photosensitive materials

Elhames

Nessark

Gîrtan³

et al. 2009

2009 3rd ICTON Mediterranean Winter Conference (ICTON-MW)

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“…[ 25 ] They are very promising candidate for electronic, optoelectronic and photonics. [ 26 ] PAZs do not undergo oxidative doping with iodine. Rather, these materials react with I 2 to form iodonium complexes.…”

Section: Introductionmentioning

confidence: 99%

Investigation of aggregation induced emission in 4-hydroxy-3-methoxybenzaldehyde azine and polyazine towards application in (opto) electronics: synthesis, characterization, photophysical and electrical properties

Dineshkumar

Muthusamy

2016

Designed Monomers and Polymers

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An azine monomer 4-hydroxy-3-methoxybenzaldehyde azine was synthesized by refluxing with ethanolic solution of vanillin with hydrazine hydrate. It was then converted into polyazine by oxidative polymerization. The structure of azine and polyazine was characterized by FT-IR, UV–visible, 1H-NMR and 13C-NMR. Spectral results suggest the formation of polymer, through C–C and C–O–C coupling of the phenylene and oxyphenylene. The relationship between the structures and photophysical properties of azine and polyazine was studied. Both azine and polyazine show, aggregation induced emission with increase in concentration in DMSO solution. The single crystal structure of azine suggesting the various inter and intra molecular interactions rigidify the conformation and locked the intramolecular rotations of the phenyl rings in the molecule. The inhibition of intramolecular rotation, J- aggregation and increase of conjugation impart the fluorescence in aggregated state. Additionally, the electronic properties namely orbital energies and resulting energy gap calculated theoretically by density functional theory (DFT).

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“…Doping process plays an important role for the electrical conductivity level of conjugated polymers [11][12][13][14]. For example, some dedoped polymeric systems can show insulator behavior with band gap energies ranging from 1 to several eV.…”

Section: Introductionmentioning

confidence: 99%

The electrical conductivity properties of polythiophene/TiO2 nanocomposites prepared in the presence of surfactants

Uygun

Türkoğlu

Şen

et al. 2009

Current Applied Physics

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Electrochemistry and photoelectrochemistry of two donor–acceptor polythiophene polymers with acceptor moieties in the main chain

Cited by 20 publications

References 54 publications

Optical and photo-electrochemical characterization of organic-inorganic photosensitive materials

Optical and photo-electrochemical characterization of organic-inorganic photosensitive materials

Investigation of aggregation induced emission in 4-hydroxy-3-methoxybenzaldehyde azine and polyazine towards application in (opto) electronics: synthesis, characterization, photophysical and electrical properties

The electrical conductivity properties of polythiophene/TiO2 nanocomposites prepared in the presence of surfactants

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