Resonance energy transfer between FMN molecules in the presence of dimers: A review

Grajek, Hanna

doi:10.1016/j.molliq.2015.04.043

“…The electronic structure of FMN has been previously studied in regard to biochemical applications, using ultraviolet–vis (ultraviolet–visible) spectroscopy and electron paramagnetic resonance29303132. Its electron-transfer mechanism in water has also been reported33. In an acidic aqueous solution (0.7<pH<6.2), the predominant species is FMN – , whereby a proton from the phosphate group of FMN has been lost (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…In alkaline conditions, FMN is known to exhibit photoinduced electron transfer33 and undergo hydrolysis with OH − at high temperature (353 K)3435. For this reason, we aimed to explore the temporal stability of the FMN-Na redox reaction.…”

Section: Resultsmentioning

confidence: 99%

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A biomimetic redox flow battery based on flavin mononucleotide

Orita

¹

,

Verde

²

,

Sakai

³

et al. 2016

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The versatility in design of redox flow batteries makes them apt to efficiently store energy in large-scale applications at low cost. The discovery of inexpensive organic electroactive materials for use in aqueous flow battery electrolytes is highly attractive, but is thus far limited. Here we report on a flow battery using an aqueous electrolyte based on the sodium salt of flavin mononucleotide. Flavins are highly versatile electroactive molecules, which catalyse a multitude of redox reactions in biological systems. We use nicotinamide (vitamin B3) as a hydrotropic agent to enhance the water solubility of flavin mononucleotide. A redox flow battery using flavin mononucleotide negative and ferrocyanide positive electrolytes in strong base shows stable cycling performance, with over 99% capacity retention over the course of 100 cycles. We hypothesize that this is enabled due to the oxidized and reduced forms of FMN-Na being stabilized by resonance structures.

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“…The electronic structure of FMN has been previously studied in regard to biochemical applications, using ultraviolet-vis (ultraviolet-visible) spectroscopy and electron paramagnetic resonance [29][30][31][32] . Its electron-transfer mechanism in water has also been reported 33 . In an acidic aqueous solution (0.7opHo6.2), the predominant species is FMN -, whereby a proton from the phosphate group of FMN has been lost ( Fig.…”

Section: Resultsmentioning

confidence: 89%

“…Dimerization of FMN-Na. In alkaline conditions, FMN is known to exhibit photoinduced electron transfer 33 and undergo hydrolysis with OH À at high temperature (353 K) 34,35 . For this reason, we aimed to explore the temporal stability of the FMN-Na redox reaction.…”

Section: Resultsmentioning

confidence: 99%

A Biomimetic Redox Flow Battery Based on a Flavin Mononucleotide

Orita

¹

,

Verde

²

,

Sakai

³

et al. 2016

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The versatility in design of redox flow batteries makes them apt to efficiently store energy in large-scale applications at low cost. The discovery of inexpensive organic electroactive materials for use in aqueous flow battery electrolytes is highly attractive, but is thus far limited. Here we report on a flow battery using an aqueous electrolyte based on the sodium salt of flavin mononucleotide. Flavins are highly versatile electroactive molecules, which catalyse a multitude of redox reactions in biological systems. We use nicotinamide (vitamin B3) as a hydrotropic agent to enhance the water solubility of flavin mononucleotide. A redox flow battery using flavin mononucleotide negative and ferrocyanide positive electrolytes in strong base shows stable cycling performance, with over 99% capacity retention over the course of 100 cycles. We hypothesize that this is enabled due to the oxidized and reduced forms of FMN-Na being stabilized by resonance structures.

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