Photogalvanic effect of thin-layer photocells composed of thionine/Fe(II) systems

Shigehara, Kiyotaka; Nishimura, Masatoshi; Tsuchida, Eishun

doi:10.1016/0013-4686(78)87006-6

Cited by 8 publications

(3 citation statements)

References 13 publications

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“…11). 38 Indeed, these pioneering works by Tsuchida et al must be engraved on our heart as the important milestone of the research on dye‐sensitized solar cells (DSSC)39 that are approaching a conversion efficiency of >12%.…”

Section: Photosensitized Electron Transfer In Macromolecular Complexesmentioning

confidence: 99%

Macromolecular Complexes Leading to High‐Performance Energy Devices

Oyaizu

Nishide

2012

Macromolecular Symposia

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Dynamic interactions and electronic processes in macromolecule-metal complexes established in 1970s provided conceptual basis for the development of a new class of functional polymers. Principles of soft/multiple interaction and multielectron processes have been pursued by exploring the macromolecule-metal complexes and polyion complexes, which gave rise to more generalized concept of macromolecular complexes. As one of the multiple interaction, reversible binding of O 2 in aqueous media and facilitated transport of O 2 were first accomplished by macromolecular metal complexes. The related oxygen technologies have led to the development of unprecedented materials to allow oxygen enrichment in cathodes of fuel cells and air batteries. Properties of electric/ionic conduction and electron transfer mediation in macromolecular complexes suggested our avenue toward the ''radical batteries'' as entirely organic, rare metal-free, and rechargeable burst power sources. Combination of the photoelectrochemistry of macromolecular complexes and the methods for the precision control of charge separation, transport, and storage in polymers derived from the battery research have inspired design principles of novel photovoltaic polymers useful for organic solar cells. In this paper, recent developments of energy-related materials originated from the idea of the macromolecular complexes are focused.

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Section: Photosensitized Electron Transfer In Macromolecular Complexesmentioning

confidence: 99%

Macromolecular Complexes Leading to High‐Performance Energy Devices

Oyaizu

Nishide

2012

Macromolecular Symposia

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“…Owing to the presence of strong Fe(II) concentration gradient in the cell within the "rst 40 h, Fe(II) di!usion rate from the dark to the light compartment may exceed the dark reaction rate between the ground state Methylene blue and Fe(II) at the maximum di!usion length between the nickel electrodes (10 cm). It is known that there exists a rapid electron exchange reaction of hydrogen transfer type between hexaquo-Fe(II) and hexaquo-Fe(III) as follows (Shigehara et al, 1978):…”

Section: Solution Kinetics and Suggested Mechanismmentioning

confidence: 99%

Photogalvanic effect in aqueous Methylene blue nickel mesh systems: Conversion of light into electricity

Bayer¹,

Eroğlu²,

Türker³

2001

Int. J. Energy Res.

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SUMMARYThe photogalvanic e!ect in electrochemical cells, employing aqueous Methylene blue and Fe(II)/Fe(III) couple electrolyte and nickel-mesh electrodes, were experimentally investigated. Five di!erent standard H-cell con"gurations were set-up by modifying the electrolyte. Long-term open-circuit voltage measurements were conducted in order to test the stability of the cells. Light on}o! reproducibility experiments were also carried out during lengthy cell operations. By comparing experimental quantum yield with theoretical predictions, it was found that the cells operate on di!erential electrode kinetics. Oxidation of the illuminated electrode was detected. This a!ected the current}voltage characteristics of the cells after a su$ciently long cell operation. Schottky junction treatment was used to model the electrolyte}electrode junction. After calculating the ratio between the majority carrier (electron) current density and minority carrier (hole) current density, we concluded that the oxidation of the electrodes contributes positively to the cell performance since the electrode}electrolyte interface shows unipolar Schottky diode characteristics.

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“…Thermotropic liquid crystalline polymers have wide range of applications from ultrahigh strength fibres to nonlinear optical devices [11][12][13]. Polyesters synthesized have been reported to possess intriguing anisotropic, mechanical, electrical and optical properties suitable for technological applications [14]. Photocrosslinkable polymers have found applications in microlithography including printing technology, integrated circuit technology, photoconductors, photofabrication, photocrosslinked hydrogels etc [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization and Photocrosslinkable Studies of Certain Thermotropic Liquid Crystalline Poly(ester-amides)

Kalappa¹,

Antony²,

Ramalakshmi³

2018

JACS

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Five thermotropic liquid crystalline poly(ester-amides) were synthesized by polycondensation method using varying dicarboxylic acids with a common diamine namely 4,4'-diaminodiphenyl and a common diol namely 2,6-bis(4-hydroxy-3-methoxybenzylidene)cyclohexanone (CHBV). The solubility data and viscosity measurements of these synthesized poly(ester-amides) were used for qualitative characterization. The spectroscopic techniques such as FT-IR, 1 H NMR, 13 C NMR were performed for investigating micro structural features. By differential scanning calorimetry (DSC), the thermal phase transition behavior of these poly(ester-amides) was studied. Scanning electron microscopy (SEM) technique was used to investigate the morphology of these poly(ester-amides). By using UV-visible spectroscopic technique, the photocrosslinkability of these poly(ester-amides) were studied by irradiating these poly(ester-amides) under a 160 W medium pressure mercury lamp. SEM analysis of these UV irradiated poly(ester-amides) showed the changes in morphology. Thus, the poly(esteramides) containing arylidene keto moiety in the main chain exhibited nematic mesophase and were photocrosslinked upon UV irradiation. X-ray diffraction (XRD) patterns of these poly(ester-amides) were taken to assess the degree of crystallinity.

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Photogalvanic effect of thin-layer photocells composed of thionine/Fe(II) systems

Cited by 8 publications

References 13 publications

Macromolecular Complexes Leading to High‐Performance Energy Devices

Macromolecular Complexes Leading to High‐Performance Energy Devices

Photogalvanic effect in aqueous Methylene blue nickel mesh systems: Conversion of light into electricity

Synthesis, Characterization and Photocrosslinkable Studies of Certain Thermotropic Liquid Crystalline Poly(ester-amides)

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