Studies on storage photoelectrochemical cell consisting of phenazine dye-EDTA and different redox couples

Jana, Asok K.; Roy, Swarnil; Bhowmik, B.

doi:10.1016/0360-5442(88)90041-2

Cited by 25 publications

(14 citation statements)

References 7 publications

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“…Figure 1a shows the optical absorption spectra of cresyl violet (8.2 × 10 −6 mol dm −3 ) in aqueous solution, which exhibits an absorption band at 580 nm (ε 600 = 47,800 ± 500 dm 3 mol −1 cm −1 ). In methanol, the nature of the absorption spectrum remained the same but showed higher absorbance (ε 600 = 69,000 ± 600 dm 3 mol…”

Section: Time-resolved Studiesmentioning

confidence: 92%

“…Substituting f c in Eq. [3], the observed absorbance can be shown to be related to surfactant concentration as…”

Section: Interactions With Anionic Surfactantsmentioning

confidence: 97%

“…Such reactions go through the involvement of excited and free radical species whose behavior in a micellar medium can be significantly different from that in a homogeneous aqueous medium. Further, organic dyes have vastly been used in photo-electrochemical energy conversion devices, wherein their redox chemistry plays an important role (3,4). There have been reports in the past that use of these dyes as sensitizers in photo-electrochemical devices for solar energy conversion suffer from very poor power conversion efficiency (5,6).…”

Section: Introductionmentioning

confidence: 99%

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Steady-State and Time-Resolved Studies on Spectral and Redox Properties of Dye–Surfactant Interactions

Gawandi

Guha

Priyadarsini

et al. 2001

Journal of Colloid and Interface Science

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Section: Time-resolved Studiesmentioning

confidence: 92%

“…Substituting f c in Eq. [3], the observed absorbance can be shown to be related to surfactant concentration as…”

Section: Interactions With Anionic Surfactantsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Steady-State and Time-Resolved Studies on Spectral and Redox Properties of Dye–Surfactant Interactions

Gawandi

Guha

Priyadarsini

et al. 2001

Journal of Colloid and Interface Science

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“…NMR spectra were recorded in perdeuterated DMSO on a Bruker (Billerica, MA) Avance III spectrometer operating at 600 MHz for 1 H, 150 MHz for 13 C, and 60 MHz for 15 N. Assignments were confirmed with 1 H- 13 C HSQC and HMBC, 1 H-15 N HMBC, and 1 H- 13 C 1, 1-ADEQUATE experiments [25][26][27]. Amberized NMR tubes were used to protect the samples from photodegradation.…”

Section: Structural Determinationmentioning

confidence: 99%

Oxidation-reduction and photophysical properties of isomeric forms of Safranin

Andersen

Wang

Khoo

et al. 2022

Preprint

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Safranine O is widely used in the bioenergetics community as an indicator dye to determine membrane potentials and as an electron transfer mediator in potentiometric titrations. Here we show that two different commercial preparations of Safranine O contain less than sixty percent by weight of the title compound, with the rest primarily consisting of two closely related safranine isomers. All three major isomer components were isolated using reverse phase HPLC and their structures determined using mass spectrometry and two-dimensional NMR. These Safranines have two-electron midpoint potentials ranging from −272 to −315 mV vs. SHE. We have also investigated the absorption and fluorescence spectra of the compounds and found that they display distinct spectral and photophysical properties. While this mixture may aid in Safranine O’s utility as a mediator compound, membrane potential measurements must take this range of dye potentials into account.

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“…This encouraging result prompted us to take up this study where we devised a photoelectrochemical (PEC) cell consisting of two chambers, one of which was filled with aqueous solution of dye–oxidized multiwalled carbon nano tubes (dye‐OMWCNTs) and the other with iodine/triiodide solution (I 3 /I − ). Two chambers of the cell were separated by a planar lipid membrane (PLM) (23,24). The dyes used in the study were thionine (TH) from thiazine group and Rose Bengal (RB) from xanthine group.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of Storage Capacity and Conversion Efficiency of Photoelectrochemical Cells: Effect of Dyes Adsorbed on Carbon Nano Tubes

Mondal

Basu²,

Das

et al. 2010

Photochem & Photobiology

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We report here our studies on photoelectrochemical (PEC) cells where two commonly used photosensitive dyes, thionine and Rose Bengal were used as photosensitizers for conversion of light energy to electrical energy. The performance of the cells increased radically in presence of oxidized multiwalled carbon nano tubes (OMWCNTs) as reflected by the values of conversion efficiency (∼3.69%) and open circuit voltage (∼548.9 mV). To understand the role of OMWCNTs in enhancing the performance of the cells, the spectral study of dye–OMWCNT mixed systems were performed. The absorption spectra indicated more absorption of incident photons in presence of OMWCNT, whereas the infrared spectra suggested that the basic structure of dyes remained unaltered. The spectral studies implied that the dye molecules got adsorbed on OMWCNTs side walls causing efficient absorption of the incident light quanta. Moreover, insertion of planar lipid membrane (PLM) separating the two chambers of PEC cell could effectively counteract the recombination of photodissociated charges and thereby caused better storage capacity of the PEC cells with further increase in efficiency.

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Studies on storage photoelectrochemical cell consisting of phenazine dye-EDTA and different redox couples

Cited by 25 publications

References 7 publications

Steady-State and Time-Resolved Studies on Spectral and Redox Properties of Dye–Surfactant Interactions

Steady-State and Time-Resolved Studies on Spectral and Redox Properties of Dye–Surfactant Interactions

Oxidation-reduction and photophysical properties of isomeric forms of Safranin

Enhancement of Storage Capacity and Conversion Efficiency of Photoelectrochemical Cells: Effect of Dyes Adsorbed on Carbon Nano Tubes

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