Fluorene Dyes

Ziarani, Ghodsi Mohammadi; Moradi, Razieh; Lashgari, Negar; Kruger, Hendrik G.

doi:10.1016/b978-0-12-815647-6.00009-1

Cited by 5 publications

(4 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be used to prepare azobenzene derivatives with active functional 86 ZANCO Journal of Pure and Applied Sciences 2023 groups as a precursor for further synthesis to give Azo-amide. (Hamzacebi et al, 2008), Azoimine (Ziarani et al, 2018) and Azo-chalcone (Al-Asiri, 2000) Synthetic colors are widely used in many modern sectors, including textiles, leather, paper, and the creation of food and hair coloring. Because of delocalization, the most popular synthetic Azo dyes used for dyeing fabrics and textiles were generally highly colored, i.e.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and dye performance investigations of azo-coumarin bearing chalcone moieties

2023

ZJPAS

View full text Add to dashboard Cite

The preparation of several azo dyes(2a-h) involved the reaction of 4-aminoacetophenone with sodium nitrite to produce the corresponding diazonium salts, which were then permitted to react with 4-Hydroxycoumarin to produce the relevant azo dye (A). The prepared starting material (A) was then reacted with various substituted benzaldehydes to give a new series of chalcone derivatives(2a-h). Additionally, FT-IR and 1H-NMR spectra used to validate the structures of the newly synthesized compounds. Acid and dispersion dyes are employed with all azo compounds to execute dyeing on multi-fiber strips made of acetate, cotton, nylon, wool, acrylic, and polyester fibers. Each fiber was given moderate to exceptional fastness characteristics by all the synthetic dyes.

show abstract

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and dye performance investigations of azo-coumarin bearing chalcone moieties

2023

ZJPAS

View full text Add to dashboard Cite

show abstract

“…Conversely, PAH compounds are also building blocks in natural products [ 2 ] (e.g., fluorene [ 3 , 4 ], phenanthrene [ 5 , 6 ], anthracene [ 7 , 8 ], and phenanthridine [ 9 , 10 ]), possess molecular properties that qualify their application in optoelectronic devices (e.g., organic solar cells [ 11 , 12 ]), find applications in other technologies [ 13 , 14 , 15 , 16 ], or are subject of toxicological investigations. Their heterocyclic ( N - and O -containing) derivatives (N-PAH/O-PAH) are especially attractive synthons in the pharmaceutical industries as part of active pharmaceutical ingredients (APIs) [ 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Preparative Production of Functionalized (N- and O-Heterocyclic) Polycyclic Aromatic Hydrocarbons by Human Cytochrome P450 3A4 in a Bioreactor

et al. 2022

View full text Add to dashboard Cite

Polycyclic aromatic hydrocarbons (PAHs) and their N- and O-containing derivatives (N-/O-PAHs) are environmental pollutants and synthetically attractive building blocks in pharmaceuticals. Functionalization of PAHs can be achieved via C-H activation by cytochrome P450 enzymes (e.g., P450 CYP3A4) in an environmentally friendly manner. Despite its broad substrate scope, the contribution of CYP3A4 to metabolize common PAHs in humans was found to be small. We recently showcased the potential of CYP3A4 in whole-cell biocatalysis with recombinant yeast Komagataella phaffii (Pichia pastoris) catalysts for the preparative-scale synthesis of naturally occurring metabolites in humans. In this study, we aimed at exploring the substrate scope of CYP3A4 towards (N-/O)-PAHs and conducted a bioconversion experiment at 10 L scale to validate the synthetic potential of CYP3A4 for the preparative-scale production of functionalized PAH metabolites. Hydroxylated products were purified and characterized using HPLC and NMR analysis. In total, 237 mg of fluorenol and 48 mg of fluorenone were produced from 498 mg of fluorene, with peak productivities of 27.7 μmol/L/h for fluorenol and 5.9 μmol/L/h for fluorenone; the latter confirmed that CYP3A4 is an excellent whole-cell biocatalyst for producing authentic human metabolites.

show abstract

“…Depending on the type of solvent and its interaction with the dye, dyes and/or pigments are produced. It is known from literary sources [9,10] that dyes are, as a rule, organic compounds with conjugated aromatic structures that contain chromophores and auxochromes (aromatic systems, double bonds, bonds containing nitrogen, carbon atoms, oxygen or sulfur). In the composition of pastes, either one main component or a mixture of coloring substances can be used.…”

mentioning

confidence: 99%

“…Therefore, the method of UV-vis absorption spectroscopy is widely used to differen tiate and identify a certain class of dyes in the study of ballpoint pen pastes. According to UVvis absorption spect roscopy, the dyes of ballpoint pen pastes can be classified into different chemical classes, the most common of which are: triarylmetha ne (blue-violet, black pastes; λ max = 550-625 nm); phthalocyanine (blue-violet, black, green pastes; λ max = 625-715 nm); azo dyes (black, green pastes; λmax = 385-480 nm); xanthene (red pastes, λ max = 540-560 nm); azine dyes (black pastes, λ max = 550-580 nm) (Table 1) [2,[9][10][11][12][13].…”

mentioning

confidence: 99%

Identification of Triarylmethane, Phthalocyanine and Xanthene in a Mixture of Dyes by Electron Absorption Spectroscopy

Posilskyi,

Artamonova,

Trunova

2023

Ukr. Chem. Journ.

View full text Add to dashboard Cite

In the work, the qualitative composition and differentiation of 43 samples of ballpoint pen pastes of different colors was investigated (blue-violet – 29 samples, pink-violet – 3 samples, blue – 3 samples, black – 5 samples, green – 1 sample and red –2 samples) by the method of electronic absorption spectroscopy. The results of the study showed that each paste can be distinguished by studying the nature of their absorption spectra, which arises due to the presence of different functional groups. It was established that most of the analyzed paste samples contain pigments based on triarylmethane, phthalocyanine, xanthene dyes or their mixture. Certain absorption maxima correspond to each type of dyes. The broad and most intense band at λ~590 nm, which was detected for all samples, corresponds to triarylmethane dyes. The band at λ~670 nm corresponds to phthalocyanine dyes. The presence of absorption bands in the green range (λ~520–560 nm) indicates the presence of xanthene dyes in the composition of the pastes. Using the method of photoluminescence spectroscopy upon excitation of IR luminescence in the green region of the spectrum (λ=530 nm) it is shown that 11 blue-violet, 5 black and one red pastes exhibit bright luminescence due to the presence of crystal violet and some other triarylmethane dyes in their composition. Weak luminescence was detected for three blue pastes. No luminescence response was observed for the other tested pastes, which is due to the presence of phthalocyanine dyes in these pastes, the absorption of which overlaps with the luminescence spectra of triarylmethane dyes. The obtained data can be used to create a reference base for identifying and differentiating the composition of ballpoint pen pastes of modern manufacturers and establishing their classification and identification differences.

show abstract

Fluorene Dyes

Cited by 5 publications

References 39 publications

Synthesis, characterization, and dye performance investigations of azo-coumarin bearing chalcone moieties

Synthesis, characterization, and dye performance investigations of azo-coumarin bearing chalcone moieties

Preparative Production of Functionalized (N- and O-Heterocyclic) Polycyclic Aromatic Hydrocarbons by Human Cytochrome P450 3A4 in a Bioreactor

Identification of Triarylmethane, Phthalocyanine and Xanthene in a Mixture of Dyes by Electron Absorption Spectroscopy

Contact Info

Product

Resources

About