Natural dyes versus lysochrome dyes in cheiloscopy: A comparative evaluation

Investigation of Dyes for Dye-Sensitized Solar Cells: Ruthenium-Complex Dyes, Metal-Free Dyes, Metal-Complex Porphyrin Dyes and Natural Dyes

Following the first report on dye-sensitized solar cells (DSCs) by Prof. Grätzel in 1991, thousands of papers have been published with the aim of making DSCs commercially viable (Fig. 1). They are attractive because of their low-cost materials and convenient fabrication by a non-vacuum, high-speed printing process. One of the key materials in DSCs is the sensitizer dye. Ruthenium-complex dyes a...

Natural and synthetic dyes in histology

Counterstains can be of high relevance for the evaluation of immunostaining because cellular details and immunological reactivity are often easier correlated in counterstained tissue sections than in simply immunostained specimens. There are many kinds of dyes in histology. Some are useful for counterstainings while others are not; a careful selection is necessary. Even a given type of dye, f.e...

Natural Dyes, Our Global Heritage of Colors

Dyeing Properties Using Natural Dyes from Rhubarb:

In this investigation dyeing of alginate fiber was carried out after cationic treatment of 11 EPTAC (2, 3-Epoxypropyl Trimethyl Ammonium Chloride). Optimum dyeing process and 12 parameter show good dyeing performance when alginate fiber dyed with rhubarb dye. In addition 13 to cationic treatment is taken into account for alginate fiber to improve fastness, color strength, 14 breaking strength. ...

Dyeing of Textiles with Natural Dyes