Optical properties of natural dyes: prospect of application in dye sensitized solar cells (DSSCs) and organic light emitting diodes (OLEDs)
Journal Title: Food Research - Year 2018, Vol 2, Issue 5
Abstract
Optical properties (absorbance, fluorescence, and transmittance) of the natural dyes extracted from flower, leaf, bark and rhizome of some plant species available in Nepal have been explored, with the prospect of application in dye-sensitized solar cells (DSSCs) and organic light emitting diode (OLED) employing UV-Vis., Fluorescence and FTIR Spectroscopy. The extraction process was carried out using solvents with a varying polarity index of ca. 0 to 10: cyclohexane (CH), dichloromethane (DCM), acetone, ethanol (EtOH), methanol (MeOH) and double distilled water (DDW). The absorbance was found to depend on the nature of solvent used; the dye samples, A. vasica Nees (in DDW, acetone, DCM and CH), N. arbor-tristis L (in MeOH and CH), U. dioica L (in EtOH, acetone, DCM and cyclohexane), O. wightiana Wall (in acetone and CH), A. vulgaris L (in DCM and cyclohexane), C. coccinea Wall (in DCM), R. anthopogon D.Don (in DCM) and W. fruticosa L (in CH), showed good absorbance in the visible-region and blue shift in the absorbance maxima was noticed with increase of the polarity index of solvents. Some plant extracts showed intense fluorescence emission in the visible region, which hints at their prospect of application in the OLED devices.
Authors and Affiliations
P. N. Paudel, A. Pandey, R. R. Shrestha, P. Lamichhane, R. Adhikari, B. P. Kafle
Keywords
Related Articles
- EP ID EP489519
- DOI 10.26656/fr.2017.2(5),096
- Views 178
- Downloads 0
Isolation and identification of mold and yeast in medombae, a rice wine starter culture from Kompong Cham Province, Cambodia
Medombae is a dried starter culture used for traditional rice wine processing in Cambodia. However, studies on the role of mold and yeast present and their efficacy for rice wine fermentation are still limited. Cultural...
Level of Campylobacter jejuni from naturally contaminated chicken liver and chicken legs in various task: a cross contamination study
Cross contamination is one of the most important contributing factors in foodborne illness originating in household environments. The objective of this research was to determine the transfer between naturally contaminate...
Microwave irradiated coconut shell-activated carbon for decolourisation of palm oil mill effluent (POME)
The study was based on the adsorption principle of colour removal from POME using natural bio-sorbents Coconut Shell activated carbon (CS-AC) pre-treated by microwave irradiation. The effect of operating parameters such...
Stingless bee honey and its potential value: a systematic review
Modern science has found that most traditional practice of using stingless bee honey has great potential as an added value in modern medicine and considered to have a higher medicinal value than other bee species. Howeve...
Effect of food additives on the quality of white shrimp (Litopenaeus vannamei)
The effects of three additives: sodium tripolyphosphate (STPP), sodium bicarbonate (NaHCO3) and microbial transglutaminase (MTGase) with the addition of 2% sodium chloride (NaCl) at different concentrations (2, 5 and 8%)...