0
What else can I help you with?
What are the terms used to describe the effect on chromophore by auxochrome?
The effect of auxochrome on a chromophore is described by terms like bathochromic shift (red-shift), hypsochromic shift (blue-shift), and hyperchromic effect (increase in absorbance intensity). These terms refer to the changes in the absorption spectrum of a molecule due to the presence of an auxochrome group.
What are structural feature that may produce bathochromic and hypsochromic shift?
A bathochromic shift or red shift can ?æbe caused by an auxochrome, which is a group of atoms, that?æcan change the wavelength and absorption intensity. A hypsochromic shift or blue shift can be produced?æby a change that involves the removal of conjugation in a conjugated system..
What are the terms used to describe the effect on chromophore by auxochrome?
The effect of auxochrome on a chromophore is described by terms like bathochromic shift (red-shift), hypsochromic shift (blue-shift), and hyperchromic effect (increase in absorbance intensity). These terms refer to the changes in the absorption spectrum of a molecule due to the presence of an auxochrome group.
Are compounds that consist only of a cromophore considered to be stains?
No, compounds consisting only of a chromophore are not considered stains. Stains typically consist of both a chromophore (which provides color) and an auxochrome (which helps the dye bind to the material being colored). The auxochrome is necessary for the stain to effectively bind to the material and impart color.
What is difference between chromophore and auxochrome?
Chromophores are responsible for giving dyes their color by absorbing certain wavelengths of visible light and transmitting or reflecting others.Auxochromes modify the ability of a chromophore to absorb light. They often result in the deepening and intensifying of the color of compounds
What are structural feature that may produce bathochromic and hypsochromic shift?
A bathochromic shift or red shift can ?æbe caused by an auxochrome, which is a group of atoms, that?æcan change the wavelength and absorption intensity. A hypsochromic shift or blue shift can be produced?æby a change that involves the removal of conjugation in a conjugated system..
Are indicators changing colour a chemical change?
Any chemical change within any product is due to the ph level that the product carries. Chemical changes occur when you mix one thing with another. Most things you mix together will cause a reaction but it all depends on if the product is an acid or not.
What are the applications of Congo red dye?
Congo red dye is a synthetic reactive water soluble dye:� used in medicine (as a biological stain)� and as an indicator since it turns from red-brown (in basic medium) to blue in acidic one.� It is also used to color textiles (initially cotton).� It could also be used as a gamma-ray dosimeter since its coloration decays with the intensity of the irradiation [E-Journal of Chemistry, http://www.e-journals.net Vol. 5, No.3, pp. 572-576, July 2008].It is carcinogenic [Adsorptive removal of Congo red, a carcinogenic textile dye by chitosan. hydrobeads: Binding mechanism, equilibrium and kinetics, Colloids and Surfaces A: Physicochem. Eng. Aspects 299 (2007) 146 152].Congo red contains an azo (-N=N-) chromophore and an acidic auxochrome (sulfonate : -SO3H) (which, respectively, gives and reinforces the coloration) associated with the benzene structure. Congo red is a the sodium salt of a derivative of benzidine and naphthionic acid.About the formula, See Congo-red-2D-skeletal.png in wikipedia.See also Encyclopaedia Britannica.Congo red dye is a synthetic reactive water soluble dye:¤ used in medicine (as a biological stain)¤ and as an indicator since it turns from red-brown (in basic medium) to blue in acidic one.¤ It is also used to color textiles (initially cotton).¤ It could also be used as a gamma-ray dosimeter since its coloration decays with the intensity of the irradiation [E-Journal of Chemistry, http://www.e-journals.net Vol. 5, No.3, pp. 572-576, July 2008].It is carcinogenic [Adsorptive removal of Congo red, a carcinogenic textile dye by chitosan. hydrobeads: Binding mechanism, equilibrium and kinetics, Colloids and Surfaces A: Physicochem. Eng. Aspects 299 (2007) 146-152].Congo red contains an azo (-N=N-) chromophore and an acidic auxochrome (sulfonate : -SO3H) (which, respectively, gives and reinforces the coloration) associated with the benzene structure. Congo red is a the sodium salt of a derivative of benzidine and naphthionic acid.About the formula, See Congo-red-2D-skeletal.png in wikipedia.See also Encyclopaedia Britannica.Attention ! Link "Save" does not work ! Why?
