New SiO&lt;sub&gt;2&lt;/sub&gt;/Caffeic Acid Hybrid Materials: Synthesis, Spectroscopic Characterization and Bioactivity

Catauro, Michelina; Barrino, Federico; Poggetto, Giovanni Dal; Crescente, Giuseppina; Piccolella, Simona; Pacifico, Severina

doi:10.20944/preprints201912.0384.v1

Cited by 5 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prominent absorption peaks of pure HCAs, dissolved in EtOH at a concentration of 5 × 10 -4 M, were observed in the UVA region (315-400 nm). The maximum absorbance peak is due to the dominant transition from HOMO to LUMO, which can be ascribed to the π-π* transition of the aromatic moiety 26 . The molar extinction coefficients of PA, FA, and CA were 2969.06, 2189.18, and 1381.74 M −1 cm −1 , respectively, and the corresponding optically determined bandgaps were 4.26, 4.07, and 4.09 eV.…”

Section: Resultsmentioning

confidence: 99%

Hydroxycinnamic acid derivatives for UV-selective and visibly transparent dye-sensitized solar cells

Wulansari

Hayati

Long

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Naturally abundant dyes are very attractive for the development of dye-sensitized solar cells (DSSCs). Hydroxycinnamic acid derivatives, such as caffeic acid (CA), ferulic acid (FA), and p-coumaric acid (PA), were considered for the selective harvesting of ultraviolet A (UVA) (315–400 nm) photons. Their spectroscopic and electrochemical properties were investigated both theoretically and experimentally. They were further successfully adopted as photosensitizers in UV-selective and visibly transparent DSSCs, which exhibited a power conversion efficiency of 0.22–0.38% under AM (air mass) 1.5G (global) illumination (100 mW/cm2) and 3.40–3.62% under UVA irradiation (365 nm, 115.22 mW/cm2), with a corresponding visible light transmittance (VLT) of 49.07–43.72% and a general color rendering index (Ra) of 93–90.

show abstract

Section: Resultsmentioning

confidence: 99%

Hydroxycinnamic acid derivatives for UV-selective and visibly transparent dye-sensitized solar cells

Wulansari

Hayati

Long

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…Wettability: The wettability of the sol-gel coating on the microscope slides was evaluated by measuring ten times the height h (mm) and the base diameter d (mm) of 1 μL drop of deionized water on the horizontal surface of the sample, by means of a microlithic syringe (Hamilton, 10 μL). Wenzel, θ W and Young, θ Y , contact angles were evaluated by the sessile drop method (ASTM D7334) [ 50 , 51 , 52 ]:

where

is the surface roughness.…”

Section: Methodsmentioning

confidence: 99%

Development of Eco-Friendly Hydrophobic and Fouling-Release Coatings for Blue-Growth Environmental Applications: Synthesis, Mechanical Characterization and Biological Activity

Sfameni

Rando

Marchetta

et al. 2022

Gels

View full text Add to dashboard Cite

The need to ensure adequate antifouling protection of the hull in the naval sector led to the development of real painting cycles, which involve the spreading of three layers of polymeric material on the hull surface exposed to the marine environment, specifically defined as primer, tie coat and final topcoat. It is already well known that coatings based on suitable silanes provide an efficient and non-toxic approach for the hydrophobic and antifouling/fouling release treatment of surfaces. In the present work, functional hydrophobic hybrid silica-based coatings (topcoats) were developed by using sol-gel technology and deposited on surfaces with the “doctor blade” method. In particular, those organic silanes, featuring opportune functional groups such as long (either fluorinated) alkyl chains, have a notable influence on surface wettability as showed in this study. Furthermore, the hydrophobic behavior of this functionalized coating was improved by introducing an intermediate commercial tie-coat layer between the primer and the topcoat, in order to decrease the wettability (i.e., decreasing the surface energy with a matching increase in the contact angle, CA) and to therefore make such coatings ideal for the design and development of fouling release paints. The hereby synthesized coatings were characterized by optical microscopy, contact angle analysis and a mechanical pull-off test to measure the adhesive power of the coating against a metal substrate typically used in the nautical sector. Analysis to evaluate the bacterial adhesion and the formation of microbial biofilm were related in laboratory and simulation (microcosm) scales, and assessed by SEM analysis.

show abstract

“…85, 1,280.58, 1,459.70, 1,520.94, 1,634.82, and 3,437.70 cm −1 . The FTIR spectrum of pure drug (CA) and CA loaded NLCs, and it can be concluded that there was less or negligible disappearance of some of the drug characteristics, which may be due to slight interactions between the drug and lipid moieties while it also showed the incorporation of drug inside the NLCs moiety (Catauro et al, 2020;Wang et al, 2020).…”

Section: Ftirmentioning

confidence: 99%

Development of nanostructured lipid carriers loaded caffeic acid topical cream for prevention of inflammation in Wistar rat model

Kamath¹,

Rajeevan²,

Maity³

et al. 2022

J App Pharm Sc

View full text Add to dashboard Cite

Inflammation is a defensive response against invasion by foreign bodies, which need to be treated with safer molecules such as phytomolecules like caffeic acid (CA). This work aimed to formulate and evaluate topical cream with CA-loaded nanostructured lipid carriers (NLCs) for anti-inflammatory action. CA-loaded NLCs were formulated by solvent diffusion method followed by preparation of NLCs loaded cream which was evaluated and characterized for various parameters including in-vitro release behavior and in-vivo acute anti-inflammatory effect in carrageenaninduced rat paw edema wistar rats model. The CA-loaded NLCs showed good results for particle size, polydispersity index (PDI), zeta potential, and encapsulation efficiency, while 0.5% w/w cream had a significant anti-inflammatory effect when tested for the acute study. Furthermore, skin-irritation study was carried out on wistar rats and it was observed that the formulated creams did not produce any signs of irritation, edema, and erythema compared to the positive control group (0.9% v/v formalin group). Therefore, formulated NLCs loaded cream can be used as a safe and efficient acute anti-inflammatory agent and considered an alternative treatment strategy to existing formulations.

show abstract

New SiO<sub>2</sub>/Caffeic Acid Hybrid Materials: Synthesis, Spectroscopic Characterization and Bioactivity

Cited by 5 publications

References 38 publications

Hydroxycinnamic acid derivatives for UV-selective and visibly transparent dye-sensitized solar cells

Hydroxycinnamic acid derivatives for UV-selective and visibly transparent dye-sensitized solar cells

Development of Eco-Friendly Hydrophobic and Fouling-Release Coatings for Blue-Growth Environmental Applications: Synthesis, Mechanical Characterization and Biological Activity

Development of nanostructured lipid carriers loaded caffeic acid topical cream for prevention of inflammation in Wistar rat model

Contact Info

Product

Resources

About