Litmus turns red in acidic solutions and blue in basic solutions. What colour is methyl orange in a neutral solution? Methyl orange has the property to color alkaline and neutral water yellow. If the water becomes acidic, it turns red immediately. The point of change is at pH 4.3. How do...
in which Q is an m-valent radical of the base pigment of the formula (I), Y is a bridging moiety, X is in particular a heterocycle, and m indicates a numerical value between 1 and 4 as a colorant in color filters, ink-jet inks, electrophotographic toners and developers, and electron...
but the actual color depends on various factors as described in the text. Note that though the positions of methylation on the B-ring are shown, methyl groups are added to anthocyanins, not to anthocyanidins. Abbreviations: CHS, chalcone synthase; F3H, flavanone 3-hydroxylase; F3′H, flavonoid...
Inversely, we found that purified uroerythrin extracts degraded in solution or as a film within days at ambient conditions (air, room temperature, light), but also—albeit slower—at − 20 °C in the dark. This speaks of the general lability of the pigment—an aspect of possible ...
The light-dependent ion-transport function of microbial rhodopsin has been widely used in optogenetics for optical control of neural activity. In order to increase the variety of rhodopsin proteins having a wide range of absorption wavelengths, the light absorption properties of various wild-type rhodo...
solution R(0.05 mL)Methyl red solution RNeutral to methylredNeutral tophenolphtalein4.5 – 6.0Orange-red< 8.0Phenolphthaleinsolution R (0.05 mL)Colourless; pink or redafter adding 0.05 mLof 0.1 M baseReactionpHIndicatorColourAcid< 6Methyl red solution ROrange or redBromothymol bluesolution R1...
BACKGROUND OF THE INVENTIONThe most widely used black pigment is carbon black (C. I. Pigment Black 7). Carbon black is inexpensive and has excellent performance characteristics, such as stability to light and weather, high colour strength, jetness and neutral grey shades when mixed with white ...
A huge volume of contaminated wastewater is discharged into the water bodies from textile industries. Therefore, water pollution is gradually becoming one
Luminescence imaging has gained attention as a promising bio-imaging modality in situations where fluorescence imaging cannot be applied. However, wider application to multicolour and dynamic imaging is limited by the lack of bright luminescent proteins
Host-guest complex solid state molecular motion is a critical but underexplored phenomenon. In principle, it can be used to control molecular machines that function in the solid state. Here we describe a solid state system that operates on the basis of c