Vibrational spectroscopic, linear and nonlinear optical characteristics of Anthocyanin extracted from blueberry

Jeyaram, S.; Geethakrishnan, T.

doi:10.1016/j.rio.2020.100010

Cited by 31 publications

(12 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be seen from Figure S6 that the X-ray diffraction (XRD) pattern of anthocyanin showed a broad peak near 2 θ = 20°, which indicated that the anthocyanin was amorphous [ 32 ]. The diffraction peak intensity of the CA UFs decreased after anthocyanin was introduced.…”

Section: Resultsmentioning

confidence: 99%

Robust Electrospinning-Constructed Cellulose Acetate@Anthocyanin Ultrafine Fibers: Synthesis, Characterization, and Controlled Release Properties

Liu

Zhang

et al. 2022

Polymers

View full text Add to dashboard Cite

Anthocyanin has attracted increasing attention due to its superior biological activity. However, the inherently poor stability of anthocyanin limits its practical applications. In this study, a fast and straightforward method was developed to improve the stability of anthocyanin. Cellulose acetate ultrafine fiber-loaded anthocyanin (CA@Anthocyanin UFs) was prepared by robust electrospinning, and the potential application of cellulose acetate ultrafine fibers (CA UFs) as a bioactive substance delivery system was comprehensively investigated. The experimental results showed that CA@Anthocyanin UFs had protective effects on anthocyanin against temperature, light, and pH. The results of the artificially simulated gastric fluid (pH = 2.0) indicated that the CA@Anthocyanin UFs had a controllable release influence on anthocyanin. A 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay suggested that the CA@Anthocyanin UFs still had an excellent antioxidant activity similar to anthocyanin. This work demonstrated the potential application of robust electrospinning-constructed cellulose acetate ultrafine fibers in bioactive substance delivery and controlled release systems, as well as its prospects in green packaging due to the nature of this environmentally friendly composite.

show abstract

Section: Resultsmentioning

confidence: 99%

Robust Electrospinning-Constructed Cellulose Acetate@Anthocyanin Ultrafine Fibers: Synthesis, Characterization, and Controlled Release Properties

Liu

Zhang

et al. 2022

Polymers

View full text Add to dashboard Cite

show abstract

“…This technique involved observing the alterations in transmittance of focused Gaussian beam through a moving sample along the focal plane. [12,13] The experimental details of the Z-scan technique can be found in Ref. [3].…”

Section: The Theory Of Z-scan Methodsmentioning

confidence: 99%

“…The recorded prefocal valley followed by a peak exhibits positive refractive nonlinearity as indicated by the Z-scan (n 2 > 0). [12] When a beam of light with a non-uniform transverse intensity distribution is incident on a material with a positive refractive index, self-focusing occurs and the material behaves like a positive lens. [12] However, the recorded prefocal peak followed by a valley exhibits negative refractive nonlinearity as indicated by the Z-scan (n 2 < 0).…”

Section: The Theory Of Z-scan Methodsmentioning

confidence: 99%

The Comparative Third‐Order Nonlinearities of Titanium Carbide and Tungsten Carbide in the Visible Regain

Nadafan,

Majidi,

Khashehchi

et al. 2023

Cryst. Res. Technol.

View full text Add to dashboard Cite

This study investigates the structure and properties of Titanium carbide (TiC) and Tungsten carbide (WC) nanoparticles. The X‐ray diffraction patterns confirm the presence of a hexagonal structure in WC nanoparticles and cubic structure in TiC nanoparticles. Transmission electron microscopy analysis reveals the particle sizes to be within the range of 30–50 nm. The bandgap of TiC and WC nanoparticles are 3.5 and 3.6 eV, respectively based on diffuse reflectance spectroscopy (DRS) along with Kubelka–Munk. Furthermore, the optical phonons and dielectric function of WC and TiC nanoparticles are investigated using the reflectance spectra along with the Kramers–Kronig (KK) method. Furthermore, the Z‐scan technique, employing a Nd:YAG laser operating at a wavelength of 532 nm, is utilized to assess the nonlinear optical (NLO) characteristics of WC and TiC nanoparticles. The open aperture Z‐scan measurements of WC nanoparticles indicate reverse saturable absorption (RSA) behavior and a positive nonlinear refraction (NLR) coefficient. On the other hand, TiC nanoparticles show RSA behavior with a negative NLR effect. The order of NLR, nonlinear absorption coefficient, and the susceptibility of TiC and WC are 10−8 cm2 W−1, 10−4 cm W−1, and 10−6 esu, respectively.

show abstract

“…This spectral region belongs to the anthocyanin resonance wavelength range, 520-700 nm. The more π-conjugated the anthocyanin structure, the stronger the color and the higher the absorption wavelength [39].…”

Section: Natural Dye Absorptionmentioning

confidence: 99%

Characterization of Poly(vinylidene Fluoride) Nanofiber-Based Electrolyte and Its Application to Dye-Sensitized Solar Cell with Natural Dyes

Kusumawati

Setiarso²,

Santoso³

et al. 2023

Indones. J. Chem.

View full text Add to dashboard Cite

The potential of dye-sensitized solar cells (DSSC) as an alternative to depleting fossil fuels has been investigated. To optimize performance and efficiency, the effectiveness of PVDF and PVDF nanofiber (NF) membrane-based electrolytes in suppressing solvent leakage and evaporation in liquid electrolyte systems was evaluated. SEM results for PVDF NF membranes showed the formation of a network with a three-dimensional structure with a diameter of 100–300 nm and an average thickness of 0.14 mm. The Infrared (IR) spectrum shows the electrolyte and polymer-PVDF interactions. Differential Scanning Calorimetry (DSC) curve shows the melting transition of PVDF NF 7.66% lower than PVDF. Efficiency and resistance of DSSC based on natural dyes as measured by multimeter and Electrochemical Impedance Spectroscopy (EIS) at a solar intensity of 100 mW/cm2 showed the highest efficiency of anthocyanin-based DSSC from telang (Clitoria ternatea L.) flower extract. Its use as a photosensitizer in an electrolyte system based on PVDF NF membranes resulted in an efficiency that was not significantly different from that of liquid electrolytes (1.69%).

show abstract

Vibrational spectroscopic, linear and nonlinear optical characteristics of Anthocyanin extracted from blueberry

Cited by 31 publications

References 49 publications

Robust Electrospinning-Constructed Cellulose Acetate@Anthocyanin Ultrafine Fibers: Synthesis, Characterization, and Controlled Release Properties

Robust Electrospinning-Constructed Cellulose Acetate@Anthocyanin Ultrafine Fibers: Synthesis, Characterization, and Controlled Release Properties

The Comparative Third‐Order Nonlinearities of Titanium Carbide and Tungsten Carbide in the Visible Regain

Characterization of Poly(vinylidene Fluoride) Nanofiber-Based Electrolyte and Its Application to Dye-Sensitized Solar Cell with Natural Dyes

Contact Info

Product

Resources

About