Dyes - Science topic

The indolenine styrylcyanine dye and its carboxyl-labeled derivative were synthesized using condensation of the corresponding indolenines with 4-(dimethylamino) benzaldehyde in the presence of an alkaline catalyst. The spectral-luminescent properties of studied dyes in organic solvents, the aqueous solution (pH 7.9), and the presence of different b...

Special Issue "New Perspectives in Symmetrical Molecules, Symmetrical Dyes, and Symmetrical Catalysts: Preparation, Properties, and Applications"

In this work, the effect of structure on the photocatalytic activity of titanium dioxide nanoparticles for the degradation of methylene blue dye in aqueous solution was introduced. The titanium dioxide nanoparticles were prepared by two different methods (solvothermal and dc reactive sputtering) with three different structures (anatase only, anatas...

To reduce environmental pollution and reliance on fossil resources, polyethylene terephthalate as the most consumed synthetic polyester needs to be recycled effectively. However, the existing recycling methods cannot process colored or blended polyethylene terephthalate materials for upcycling. Here we report a new efficient method for acetolysis o...

Phase separation by cloud point phenomena depending strongly on the behavior of the surfactant used. This study aimed to apply a new surfactant for the separation of some toxic pollutants from water samples using cloud point extraction (CPE) methodology. Polyethylene glycol-400 (PEG-400) was chosen as surfactant to facilitate phase separation of Cr...

In this study, self-cleaning and photocatalytic performance of clay-based facing bricks produced using two different wastes (red mud: RM, hazelnut shell: HS) under visible light by an organic pollutant, methylene blue (MB), were discussed. The results revealed that the incorporation of waste into the samples improved the photocatalytic activity for...

Correction for 'Automated assessment of redox potentials for dyes in dye-sensitized photoelectrochemical cells' by Jelena Belić et al., Phys. Chem. Chem. Phys., 2022, 24, 197-210, https://doi.org/10.1039/D1CP04218A.

This study characterized the effect of different magnetic field (MF) intensities (10-40 mT) on the degradation of dye wastewater by activated sludge and the diversity of the microbial community at a low temperature (5 °C). The examined MF range promoted the degradation of dye wastewater by the microorganisms in the activated sludge at a low tempera...

Global warming merupakan masalah yang sedang terjadi saat ini. Salah satu akibatnya adalah adanya pencairan Gletser yang lebih cepat yang menyebabkan bencana dimana-mana. Pencairan Gletser ini menjadi inspirasi untuk membuat dunia labih baik yang dijadikan bentuk sosialisasi melalui bidang fashion. Tujuan penelitian ini adalah mendeskripsikan prose...

Correction for ‘Highly active spherical amorphous MoS 2 : facile synthesis and application in photocatalytic degradation of rose bengal dye and hydrogenation of nitroarenes’ by Namrata Saha et al. , RSC Adv. , 2015, 5 , 88848–88856, https://doi.org/10.1039/C5RA19442C.

The evolution of the chemical and pharmaceutical industry requires effective and less energy-intensive separation technologies. Engineering smart materials at a large scale with tunable properties for molecular separation is a challenging step to materialize this goal. Herein, we report thin film composite membranes prepared by the interfacial poly...

Vanadium Oxide–Molybdenum Oxide (VO–MO) mixed oxide thin films of 500 nm thickness with different compositions of VO75% MO25%, VO50% MO50%, and VO25% MO75% are coated on quartz substrate by thermal evaporation technique. The prepared composite thin films showed good thermochromic properties while heating and remarkable reversible properties while b...

The colour fastness properties of the flowers of Erythrina Suberosa dyed on wool were studied using combination of mordants such as lemon juice: copper sulphate, lemon juice: potassium dichromate, lemon juice: ferrous sulphate and lemon juice: stannous chloride in the ratio of 1:3, 1:2 and 3:1. Dyeing along with mordanting techniques which included...

This review aims at providing a broad readership of material and physical chemists, as well as those interested in ab initio calculations, about recent advances in the fields of dual solution-solid emitters and lasing applications based on organic dyes displaying an excited-state intramolecular proton transfer (ESIPT) process. ESIPT is known to be...

This study reports optimized conditions for the green synthesis of iron (II,III) oxide nanoparticles (Fe3O4 NPs) from Tamarindus indica (T. indica) leaf extract.

This work reports the effect of scaling up annular centrifugal contactors (ACCs) upon the residence time distribution and the efficiency of extraction of uranium. The experiments were carried out in a multi-scale ACC platform of three ACCs with rotor diameters of 12, 25, and 40 mm. To enable direct comparison across all three scales of ACC, the res...

Determining the extent of conjugation in dyes and fluorochromes is a helpful tool for understanding or predicting the behavior of these compounds when used as stains for microscopy. One measure that has been used repeatedly is conjugated bond number (CBN), which is the number of bonds in a conjugated system. CBN can be obtained by inspection of the...

Federal Food, Drug, and Cosmetic Act (FD&C) food dyes make industrial goods like foods and beverages more appealing. These dyes are synthetic and are typically used instead of natural dyes due to their color, stability, and low cost. Research has implied that children are sensitive to the amount of food dye in products. The amount of food dye in pr...

A series of tetracationic bis-triarylborane dyes, differing in the aromatic linker connecting two dicationic triarylborane moieties, showed very high submicromolar affinities toward ds-DNA and ds-RNA. The linker strongly influenced the emissive properties of triarylborane cations and controlled the fluorimetric response of dyes. The fluorene-analog...

Anthraquinone dyes are the second most important type of dyes after azo dyes. In particular, 1-aminoanthraquinone has been extensively utilized in the preparation of diverse anthraquinone dyes. This study employed a continuous-flow method to synthesize 1-aminoanthraquinone safely and efficiently through the ammonolysis of 1-nitroanthraquinone at hi...

Widespread access to clean water is becoming increasingly scarce due to various factors, including increasing urbanisation and industrialisation, biodiversity loss, and climate change. The development of innovative and sustainable methods...

Due to relatively low price and nontoxicity of photovoltaic (PV) systems, dye-sensitized solar cells (DSSCs) recently gained a lot of attention in terms of improving their performance and longevity. Because most of the major elements are impacted by their separate production and layering procedures, the substances in DSSCs are critical to achieving...

The design of highly efficient sensitizers is one of the most significant areas in dye-sensitized solar cell (DSSC) research. We have studied a series of benzothiadiazole-based D-π-π-A organic dyes, putting emphasis on the influence of the donor moiety on the DSSC’s efficiency. Using linear response time-dependent density functional theory (TDDFT)...

Particle tracking is widely utilized to study transport features in a range of physical, chemical, and biological processes in oceanography. In this study, a new offline particle tracking package, Tracker, is introduced and its performance is evaluated in comparison to an online Eulerian dye, one online and three offline particle tracking software...

Hindus and Muslims have coexisted harmoniously when Islam became the predominant religion in Kashmir since 13th century. The Sufi-Islamic way of life of Kashmiri Muslims and the Rishi tradition of Kashmiri Hindus coexisted and complemented one another, forming a separate ethnic group in which both have some common customs. In Kashmir, the customs s...

The Digital Atlas of European Textile Heritage is one of the most important deliverables in the COST Action 19131 „EuroWeb – Europe Through Textiles: Network for an integrated and interdisciplinary Humanities”. It is intended to be built as an online free cartographic resource that is linked to a database specially adapted for the Atlas, containing...

Extracting biological information from awake and unrestrained mice is imperative to in vivo basic and pre-clinical research. Accordingly, imaging methods which preclude invasiveness, anesthesia, and/or physical restraint enable more physiologically relevant biological data extraction by eliminating these extrinsic confounders. In this article, we d...

The removal of harmful organic dyes from aqueous solutions has drawn the attention of scientists because of the substantial threat they pose to society's worldwide health. Hence, it is crucial to design an adsorbent that is both very effective in removing dyes and has the benefit of being inexpensive. In the present work, Cs salts of tungstophospho...

A spinning disc reactor is a design widely adopted in chemical process industries because of its capability to produce thin fast-moving films, which enhance the diffusive and convective transport of solutes. However, this configuration has yet to be explored for plasma-based water treatment, where mass transport limitations in the bulk liquid often...

Background: We are yet to determine the rates of new dysplastic lesions or cancer progression after first dye chromoendoscopy in the era of high-definition endoscopy Aim and Methods: We developed a multicenter, population-based, retrospective cohort from 7 hospitals in Spain. Patients with inflammatory bowel disease and fully resected (R0) dysplast...

(1) Background: This study aimed to determine the effect of repeated pre-polymerization heating on the color and translucency of a one-shaded resin-based composite and to evaluate whether the heating cycles affect its color stability. (2) Methods: Fifty-six samples of 1-mm thickness were fabricated from Omnichroma (OM) after applying different heat...

Background The orbicularis oculi muscle, especially its part (Horner–Duverney’s muscle), which is surrounded by the pericanalicular and located deep in the lacrimal sac, is of primary importance in all stages of tear fluid flow. Purpose This study aimed to demonstrate that tightening the pretarsal-preseptal orbicularis oculi and Horner–Duverney mu...

Indoxyl-glucuronides, upon treatment with β-glucuronidase under physiological conditions, are well known to afford the corresponding indigoid dye via oxidative dimerization. Here, seven indoxyl-glucuronide target compounds have been prepared along with 22 intermediates. Of the target compounds, four contain a conjugatable handle (azido-PEG, hydroxy...

This preprint book is helpful for production engineers, color engineers, students, researchers and professors in the field of textile dyeing & finishing. This handbook is written from my notebook for exam preparation in Bachelor of Science in Textile Engineering.

Today, the emphasis is on environmentally friendly materials. Alkali lignin and spruce sawdust are suitable natural alternatives for removing dyes from wastewater. The main reason for using alkaline lignin as a sorbent is the recovery of waste black liquor from the paper industry. This work deals with removing dyes from wastewater using spruce sawd...

An efficient hybrid photoanode based on the anodic TiO 2 layer covered with gold nanoparticles (AuNPs) and BODIPY (boradiazaindacene) microrods for solar-driven water splitting experiments was developed. The BODIPY derivative (B-1) was synthesized, and their stability in different solvents was characterized in order to prepare the heterojunction ph...

This study tries to experiment and compare the effect of different resist substances on fabric in batik production. 3 research questions and a hypothesis guided the study. A sample of 170 respondents were purposively selected to gather information. The level of dye resistance and design registration on the fabric were compared among samples of bati...

It is still a challenging work of developing near-infrared (NIR) fluorescence dyes with excellent optical properties. Herein, we synthesized a series of NIR aza-BODIPY fluorescence dyes with electronic push–pull system and further investigated their photophysical properties, photostability, and application in cellular imaging. It was found that int...

G-C3N4/Bi2Fe4O9 composite photocatalysts were prepared by mechanica mixing-calcination and coprecipitation-hydrothermal method. The heterojunction structure formed by the composite of the two materials made it difficult for photogenerated electrons and holes to reunite, and improved the degradation rate of RhB. At 240 min, 25%-g-C3N4/Bi2Fe4O9 photo...

Fluorescence imaging (FLI), a non-invasive, real-time, and highly sensitive imaging modality, allows for investigating the molecular/cellular level activities to understand physiological functions and diseases. The emergence of the second near-infrared window (NIR-II, 1000-1700 nm) has endowed fluorescence imaging with deeper tissue penetration and...

With the increasing demand for environmentally friendly dyes, natural dye has become an attractive option replacing toxic synthetic dyes. Within the framework of this research, the natural dye of Chrozophora tinctoria L. was extracted using the microwave-assisted extraction method under different operating conditions. The influence of different fac...

surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties. In the dyeing of textiles, surfactants help the dye penetrate the fabric evenly.

Implementing compact, efficient, and reliable passive pulsed lasers at visible wavelengths is attractive. This paper systematically investigated the thickness-dependent optical absorption characteristics of two-dimensional materials, including graphene, transition-metal dichalcogenides, and dye films at the 532 nm wavelength band, and revealed the...

he purpose of this work was to investigate and develop a method for the formation of effective DM-legnine and Na-КМЦ on the acetate-cellulose membrane of the UAM-100 tank, as well as to measure the adsorption equilibrium of a solution with variable concentrations of the substances under study, shaking with a suspension of the acetate-cellulose memb...

Preferential flow is the most common form of water loss occurring at the interface between rock and soil (hereinafter referred to as “rock–soil interface”) in karst areas, and it is also one of the important factors causing soil water leakage into the underground. Therefore, it is of great significance to cut off the pathway of soil water loss thro...

Introduction Staphylococcus aureus plays a significant role in the development of the clinical picture in patients with atopic dermatitis. The use of commensal microflora can be a promising direction in treatment of atopic dermatitis. Aim The aim of this study is the selection of the optimal safe isolate of S. hominis for bacteriotherapy in patien...

Vegetable dyes have been paid more and more attention because of their innocuity and good compatibility with the environment, but they can not completely replace chemical synthetic dyes. In this paper, the classification, identification method, application and existing problems of vegetable dyes are described, which can be used for reference in the...

With a rapid growth of industry and agriculture, the problem of increasing levels of industrial by-products, organic dyes, drugs and personal care products, pesticides, and insecticides contaminants in the water environment needs to be addressed urgently. Cu-based organic framework material (Cu-MOF) is non-toxic, stable, easy to introduce functiona...

Dyes are widely used in industry, but their disposal after usage is a severe issue since a vast number of toxic dyes end up in the effluent. To solve this problem, in our paper, Zn100-xSmxO (x = 0, 2.5, 5, and 10) nanoparticles have been used as a cheap and easily fabricated photocatalyst for the degradation of industrial dyes of Methylene blue (MB...

Inner-filter absorption of the exciting light by the quencher or may be cause of large errors in the evaluation of quenching efficiencies in measurements of fluorescence quenching. We performed fluorescence measurements of 5,10,15,20-tetraphenylporphyrin toluene solution in a wide concentration range. We have shown a Förster-free fluorescence quenc...

Although the connection between color formation and protein deterioration reactions such as oxidation and Maillard reaction is well known there is no information on such effects during the fibrillization of whey protein isolate fibrils (WPIF). This study identifies pH, temperature, and protein concentration that affect the deterioration reactions o...

It is a great challenge to develop photocatalysts for the degradation of organic pollutants in the aqueous environment, especially those with excellent catalytic performance under visible light conditions. In this work, using graphene oxide (GO) as an electron shuttle agent and carrier, a hybrid of ZIF-8/NH2-MIL-125(Ti) and GO (ZIF-8/NH2-MIL-125(Ti...

Liver function reserve (LFR) plays an extensive and important role in patients with liver disease. Indocyanine green (ICG) clearance test is the standard diagnostic approach for LFR evaluation which was performed by spectrophotometry or pulse dye densitometry (PDD). Spectrophotometry is the gold standard, it's invasive and not real-time. PDD is non...

In this research, decolourization and neutralization of the local dyeing effluent by various parts of non-aquatic plants (Dumbcane and Pawpaw) at different contact times and adsorbents dose were investigated. Powdered stem and leaves of the plants were employed to determine the adsorbent with maximum adsorption capacity. The decolourisation and neu...

This study explores the extraction of dyes from Lawsonia inermis (Laali) and the effects of purification on the dyes for solar cell applications. The TiO 2 thin films were synthesized through Doctor Blade’s technique while the dye was applied on the thin film using a simple drop-casting method. Characterization of the doctor-blade deposited TiO 2 t...