Interaction between chlorophyll and silver nanoparticles: A close analysis of chlorophyll fluorescence quenching

Falco, William F.; Queiroz, Alexandra Mussolino de; Fernandes, Joelson; Botero, Ériton Rodrigo; Falcão, E. A.; Guimarães, Francisco Eduardo Gontijo; M’Peko, Jean-Claude; Oliveira, S. L.; Colbeck, I.; Caires, Anderson R. L.

doi:10.1016/j.jphotochem.2014.12.001

Cited by 78 publications

(39 citation statements)

References 36 publications

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“…Falco et al [19,23], in which chlorophyll molecules may be adsorbed on the metal nanoparticle surface resulting in a quenching of ChlF. For instance, our data fit provided a KSV of 3.…”

Section: Resultssupporting

confidence: 55%

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Quenching of chlorophyll fluorescence induced by silver nanoparticles

Queiroz

Mezacasa

Graciano

et al. 2016

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…Falco et al [19,23], in which chlorophyll molecules may be adsorbed on the metal nanoparticle surface resulting in a quenching of ChlF. For instance, our data fit provided a KSV of 3.…”

Section: Resultssupporting

confidence: 55%

“…where F is the fluorescence intensity, Ai are the amplitudes (pre-exponential factors), t is the time, and τi is the fluorescence lifetimes [23]. The lifetime data indicate that the quenching process must be of dynamic type as in the static quenching the lifetime is not expected to be altered by the suppressor [24].…”

Section: Resultsmentioning

confidence: 99%

Quenching of chlorophyll fluorescence induced by silver nanoparticles

Queiroz

Mezacasa

Graciano

et al. 2016

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…The fluorescence intensity decreased by 13.45% in the case of biohybrids, due to the interaction of porphyrin ring of Chla (inserted in artificial lipid membranes as a fluorescence marker) with the noble metal nanoparticles. This fluorescence quenching is in agreement with other scientific studies [31]. …”

Section: The Fluorescence Emission Spectra Of Chla In Biocompositessupporting

confidence: 94%

Gold and silver geranium biocomposites

Patrascu

Badea

Ungureanu

et al. 2016

Molecular Crystals and Liquid Crystals

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Gold and silver nanoparticles green synthesized using an aqueous extract of geranium (Pelargonium graveolens) leaves were embedded in cholesterol-containing dipalmitoyl phosphatidylcholine lipid vesicles by a simple eco-friendly method, resulting in bio-based composites with antioxidant and antibacterial properties. The artificial lipid bilayers were loaded with chlorophyll a, in order to get a deeper insight into the biocomposite formation monitored by fluorescence emission spectroscopy. These silver and gold-based biohybrids exhibited good stability and antioxidant activity. Antimicrobial investigations against Escherichia coli ATCC 8738 revealed that these bio-based composites were the most potent biocides.

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“…Changes in the content of photosynthetic pigments in leaves in response to nanopreparation influence were demonstrated by some authors [25, 26]. Interesting results were obtained with soybean plants with the addition of superparamagnetic iron oxide nanoparticles (SPIONs) in hydroponic culture.…”

Section: Resultsmentioning

confidence: 99%

Effect of Zinc and Copper Nanoparticles on Drought Resistance of Wheat Seedlings

et al. 2017

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The effect of a colloidal solution of Cu,Zn-nanoparticles on pro-oxidative/antioxidative balance and content of photosynthetic pigments and leaf area of winter wheat plants of steppe (Acveduc) and forest-steppe (Stolichna) ecotypes was investigated in drought conditions. It has been shown that Cu,Zn-nanoparticles decreased the negative effect of drought action upon plants of steppe ecotype Acveduc. In particular, increased activity of antioxidative enzymes reduced the level of accumulation of thiobarbituric acid reactive substances (TBARS) and stabilized the content of photosynthetic pigments and increased relative water content in leaves. Colloidal solution of Cu,Zn-nanoparticles had less significant influence on these indexes in seedlings of the Stolichna variety under drought.

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Interaction between chlorophyll and silver nanoparticles: A close analysis of chlorophyll fluorescence quenching

Cited by 78 publications

References 36 publications

Quenching of chlorophyll fluorescence induced by silver nanoparticles

Quenching of chlorophyll fluorescence induced by silver nanoparticles

Gold and silver geranium biocomposites

Effect of Zinc and Copper Nanoparticles on Drought Resistance of Wheat Seedlings

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