Localized Nano-Environment for Integration and Optimum Functionalization of Chlorophyll-a Molecules

Periasamy, Vengadesh

doi:10.5772/48707

Cited by 5 publications

(7 citation statements)

References 30 publications

(29 reference statements)

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“…When the PEF strength exceeded the 1.03 × 10 5 (V m –1 ) optimum value, the intensity of all diffraction peaks decreased, which might cause partial amorphization of the deposited crystallite film due to the formation of highly chlorophyll-aggregated structures as a result of the intermolecular interactions. , Hence, the degree of crystallinity of the PSI deposited film decreased. Therefore, the changes in the crystal structure following PEF treatment were obvious in the XRD findings described above and consistent with those of previous studies. , Meanwhile, the appearance of several sharp peaks in the XRD patterns could demonstrate the polycrystalline nature of chlorophyll molecules in PSI films. , Therefore, the existing structural arrangement in XRD results could confirm the plausible orientation of PSI natural dipoles with an optimum alignment change with respect to the applied external electric field direction.…”

Section: Resultssupporting

confidence: 90%

“…55,56 Meanwhile, the appearance of several sharp peaks in the XRD patterns could demonstrate the polycrystalline nature of chlorophyll molecules in PSI films. 57,58 Therefore, the existing structural arrangement in XRD results could confirm the plausible orientation of PSI natural dipoles with an optimum alignment change with respect to the applied external electric field direction.…”

Section: ■ Experimental Sectionmentioning

confidence: 67%

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Improvement of Solar Cell Efficacy by Pulsed External Electric Fields on PSI Protein Arrangement

Habibi

Faizabadi

Riazi

et al. 2021

ACS Appl. Energy Mater.

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Solar energy is one of the cleanest energies that are abundant among renewable energy sources. To design a very-low-cost solar device, chlorophyll extracted from spinach was employed. Photosystem I (PSI) was extracted by homogenization of spinach leaves and centrifugation and fractionation by column chromatography. The dipole structure of such natural photodiodes is one of the special features of the PSI protein complex that we tried to align using pulsed external electric fields to improve solar cell efficiency. To align PSI dipoles, several approaches have exploited linkers such as amino acids or polymers. Because of the difficulties of nonpolar or polar biomolecules, here, our approach was to apply a uniform pulsed external electric field (PEEF). With respect to other existing methods, our procedure is a simple, low-cost, and efficient design of solar cells, which leads to improved efficiency of biophotovoltaic cells up to a four-fold increase.

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Section: Resultssupporting

confidence: 90%

Section: ■ Experimental Sectionmentioning

confidence: 67%

Improvement of Solar Cell Efficacy by Pulsed External Electric Fields on PSI Protein Arrangement

Habibi

Faizabadi

Riazi

et al. 2021

ACS Appl. Energy Mater.

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“…Schematic representation of the processes involved in photosynthesis and the photosynthetic machinery, located in the membranes of the chloroplasts. Reprinted with permission from ref . Copyright 2012 InTech.…”

Section: Introductionmentioning

confidence: 99%

Artificial Photosynthesis: Molecular Systems for Catalytic Water Oxidation

et al. 2014

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“…Chlorophyll plays a very important task during photosynthesis process for green plant and some algae. Two main function of chlorophyll are energy collector and primary electron carrier [5].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Chlorophyll Thin Film from Noni Leaves via Dip Coating Process

Halin

Azhari

2016

MSF

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Chlorophyll is a green pigment responsible for the photosynthesis processes that occur in the green leaf. The chlorophyll pigment can be extracted from green leaf using simple solvent solution as a function of solar energy conversion. Dip coating onto glass slide was applied to produce a thin film of Noni leaves chlorophyll. The Noni leaves chlorophyll thin films were analyzed using scanning electron microscopy (SEM), X-ray diffraction (XRD) and ultra violet visible (UV-Vis). The micrograph of SEM shows that the shapes were found in various shapes. The UV-Vis analysis revealed that the extracted chlorophyll had three absorbance spectra at 433 nm, 464 nm and 664 nm. These show that the extracted chlorophyll contains both chlorophyll-a and chlorophyll-b in the mixture.

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Localized Nano-Environment for Integration and Optimum Functionalization of Chlorophyll-a Molecules

Cited by 5 publications

References 30 publications

Improvement of Solar Cell Efficacy by Pulsed External Electric Fields on PSI Protein Arrangement

Improvement of Solar Cell Efficacy by Pulsed External Electric Fields on PSI Protein Arrangement

Artificial Photosynthesis: Molecular Systems for Catalytic Water Oxidation

Synthesis of Chlorophyll Thin Film from Noni Leaves via Dip Coating Process

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