The absorption and fluorescence spectra of some basic dyes were measured in the pre­ sence of large excess of adenosine or nucleic acids. The visible absorption band of dye shifts to longer wavelengths than that in free dye solution. The fluorescence spectral shape and peak posi­ tion remain unchanged on the addition of nucleoside or nucleic acid, while the fluorescence inten­ sity is enhanced ...

Biochemical degradation test of food coal-tar dyes using sludge was studied in order to evaluate their safety. It was found that some dyes were little decomposed under aerobic condition but four azo dyes were readily decomposed under anaerobic condition. These were Food Yellow No. 4, No. 5, and Food Red No. 2, No. 102. Decomposed products of these four azo dyes by sludge under anaerobic conditi...

Dye photodegradation using ozone and Nickel ferrite nanoparticle (NFN) as a photocatalyst was studied. The catalyst was synthesized and characterized by FT-IR, SEM and XRD. Textile dyes including Remazol Red RB (RRRB) and Direct Green B (DGB) were degraded as model compounds. Dye degradation was investigated using UV–Vis and ion chromatography (IC) analyses. The effect of catalyst dosage, pH, s...

The modular assembly of boronic acids with Schiff-base ligands enabled the construction of innovative fluorescent dyes [boronic acid salicylidenehydrazone (BASHY)] with suitable structural and photophysical properties for live cell bioimaging applications. This reaction enabled the straightforward synthesis (yields up to 99%) of structurally diverse and photostable dyes that exhibit a polarity-...

As continuation of previous studies, the ability of T-284 and SH-516 cyanine dyes (Figure 1) to selectively detect fibrillar proteins of various amino acids composition (insulin, lysozyme, αsynuclien) was evaluated using fluorescence spectroscopy methods (Table). Both dyes were shown to be applicable for detection of various fibrillar protein species (Figure 2). T-284 demonstrated particular se...

conditions to form polar dyes; other common amino acid and nucleoside components did not react. The reactions of Nbenzoyloxy-MAB with proteins, nucleic acids, and their com ponents may be useful prototypes in studies on the proteinand nucleic acid-bound dyes formed in vivo by the aminoazo dyes. The biologic and chemical properties of Ar-benzoyloxyMAB parallel those of the carcinogenic aromatic ...

A new approach to general sensors for odors and volatile organic compounds (VOCs) using thin films of chemically responsive dyes as a colorimetric sensor array is described. This optoelectronic “nose,” by using an array of multiple dyes whose colors change based on the full range of intermolecular interactions, provides enormous discriminatory power among odorants in a simple device that can be...

Grape and fruit berry wines were studied in order to detect signs of their falsification by adding synthetic dyes.
 It is noted that the process analysis (examination) unknown liquids provided for research, specialists must first all establish nature such objects. possible find out only after identifying spectrum features characteristic object its actual state. The list organic acids, whic...