Structures, reduction potentials and absorption maxima of synthetic dyes of interest in photochemical solar-energy storage studies

Chan, Man Sze; Bolton, James R.

doi:10.1016/0038-092x(80)90355-2

Cited by 53 publications

(24 citation statements)

References 56 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lumiflavin 1.7 0.251 6.9 (phosphate buffer) and 6.9 guanylic acid, Kowles ferrocyanide, this work Table 2 also compares the value of the second order rate constant of the semireduced form with the results of other groups showing that it is independent of oxygen by the electron transfer process, equation ( 5 ) , which depends on the magnitude of the free energy change. The energy change is given by (Vaz et a/., 1978;Chan andBolton, 1980 andJulliard et al, 1982).…”

Section: Effect Of Potassium Ferrocyanide On the Decay Of Iumiflavin mentioning

confidence: 99%

Energy Conversion in the Decay of Triplet Lumiflavin in the Presence of Ferri‐ and Ferrocyanide

Naman¹

1988

Photochem & Photobiology

View full text Add to dashboard Cite

Abstract— Flash photolysis at 450 nm has been used to study the quenching of the excited triplet state of lumiflavin and the transient species formed in subsequent reactions in deaerated phosphate buffer (pH 6.9). The effect of the presence of ferricyanide on the life time of triplet lumiflavin has been studied. The results suggest an energy transfer reaction without concurrent electron transfer reactions. The rate constant for the process was 2.8 times 109M‐1 s‐1. The analogous reaction with ferrocyanide could not be observed because of the efficient electron transfer reaction (δG = ‐20.6 kcal mol‐1) leading to the formation of the semireduced lumiflavin and ferricyanide. The rate constant for this reaction was 3.3 times 109M‐1 s‐1. The semireduced lumiflavin radical was found to disappear in a second order reaction with a rate constant of 1.7 times 109M‐1 s‐1. It was found to react with ferricyanide with a rate constant of 0.7 times 109M‐1 s‐1. A model for the various photochemical and photophysical processes involved in the decay and quenching of the lumiflavin triplet state is suggested and discussed.

show abstract

Section: Effect Of Potassium Ferrocyanide On the Decay Of Iumiflavin mentioning

confidence: 99%

Energy Conversion in the Decay of Triplet Lumiflavin in the Presence of Ferri‐ and Ferrocyanide

Naman¹

1988

Photochem & Photobiology

View full text Add to dashboard Cite

show abstract

“…Fluorescein is used as a bio-labeling reagent and fluorescent probe due to its photophysical properties, such as long-wavelength absorption and emission, high fluorescence quantum yield, and good stability against light [1]. It is also used as a photosensitizer compound for the chemical reactions and non-linear optical media [13], as a quantum counter in dye lasers [14], and in the conversion and storage of solar energy [15]. The 5-carboxyfluorescein probe has found many applications in biology.…”

Section: Introductionmentioning

confidence: 99%

Photophysical properties of novel fluorescein derivative and its applications for time-resolved fluorescence spectroscopy

Szabelski

Gryczyński

2010

Chemical Physics Letters

View full text Add to dashboard Cite

“…The reduction potential of the closely related pyronin Y chloride is ±0.68 V versus SCE. [17] This corresponds to the reduction of the pyronin Y cation, and can therefore be considered as the oxidation potential of the pyronin Y radical. The comparison to the oxidation potential of BEDT-TTF reveals that the pyronin radicals are much stronger donors.…”

Section: Introductionmentioning

confidence: 99%

n‐Type Doping of Organic Thin Films Using Cationic Dyes

Werner¹,

Harada

et al. 2004

Adv Funct Materials

103

View full text Add to dashboard Cite

We present an approach to stable n‐type doping of organic matrices using organic dopants. In order to circumvent stability limitations inherent to strong organic donors, we produce the donor from a stable precursor compound in situ. As an example, the cationic dye pyronin B chloride is studied as a dopant in a 1,4,5,8‐naphthalene tetracarboxylic dianhydride (NTCDA) matrix. Conductivities of up to 1.9 × 10–4 S cm–1 are obtained for doped NTCDA, two orders of magnitude higher than the conductivity of NTCDA doped with bis(ethylenedithio)‐tetrathiafulvalene as investigated previously, and four orders of magnitude higher than nominally undoped NTCDA films. Field‐effect measurements are used to prove n‐type conduction and to study the doping effect further. The findings are interpreted using a model of transport in disordered solids using a recently published model. Combined FTIR, UV‐vis, and mass spectroscopy investigations suggest the formation of leuco pyronin B during sublimation of pyronin B chloride.

show abstract

Structures, reduction potentials and absorption maxima of synthetic dyes of interest in photochemical solar-energy storage studies

Cited by 53 publications

References 56 publications

Energy Conversion in the Decay of Triplet Lumiflavin in the Presence of Ferri‐ and Ferrocyanide

Energy Conversion in the Decay of Triplet Lumiflavin in the Presence of Ferri‐ and Ferrocyanide

Photophysical properties of novel fluorescein derivative and its applications for time-resolved fluorescence spectroscopy

n‐Type Doping of Organic Thin Films Using Cationic Dyes

Contact Info

Product

Resources

About