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Auxochrome A covalently saturated group which, when attached to a
chromophore, changes both the wavelength and the intensity of the absorption
maximum is known as auxochrome, e.g. NH2, OH, SH, halogens etc.
Auxochromes generally ...
2
Light:Its Interaction with Art and Antiquities
Organic dyes were said to have a chromophore and an auxochrome group
separated by a polyene, although some dyes have the chromophore group, but
no auxochrome group. The chromophore is an organic functional group that acts
as an ...
3
Foundations In Microbiology
"Stain is defined as an organic compound containing both chromophore and
auxochrome groups linked to benzene ring." Thus, the stain consists of three
components : i. Benzene ring or aromatic ring ii. Chromophore group iii.
Auxochrome ...
4
Fundamentals of Molecular Spectroscopy.
Auxochrome. A saturated group with non-bonded electrons when attached to a
chromophore alters both wave length and intensity of the absorption is called an
auxochrome e.g., - OH, - NH„ - C1, -SO,NHv The auxochrome though by itself is ...
5
Pharmaceutical Analysis: A Textbook for Pharmacy Students ...
Procaine: amino. group. auxochrome. Figure 4.10 shows the UV absorption
spectra of a solution of procaine in 0.1 M HCl and 0.1 M NaOH. In procaine, the
benzene chromophore has been extended by the addition of a C1⁄4O group, and,
...
German chemist O.N. Witt (1876) suggested the Chromophore-Auxochrome
theory for coloured organic compounds. The various terms defined accordingly
are as follows: Chromophores (In Greek, chroma means colour and phoron
means ...
BHUPINDER MEHTA, MANJU MEHTA, 2005
Some of the important characteristics of auxochrome are: (i) An auxochrome
does not give rise to absorption band of its own but when conjugated to a
chromophore, both the intensity and wavelength of absorption band are changed
. (ii) It may ...
8
Medical Laboratory Science : Theory And Practice
S. Auxochrome J group Quinonoid ring /* Chromophore group nh,+ J a" f t (a)
Basic fuchsin Acid radicle Table 6.1 Cl number and solubility table of some
common. Fig. 6.2 Example of quinonoid dyes. is colourless; and vice- versa for
acid dyes.
9
Fibre Science and Technology
azo gr. (auxochromes) (chromophore) - (chromophore) (auxochrome) Sodium
sulfonate groups (each an auxochrome) (I) An acid dye (C.l.44075) (acid blue 86)
a chromophore (amino grs each an auxochrome) (quinoid gr. a chromophore) ...
10
The Chemistry of Dyestuffs: A Manual for Students of ...
The auxochrome character of the hydroxyl group becomes more apparent by salt
formation with bases. The replacement of hydrogen by alkyl or aryl groups also
influences auxochrome groups. Indo- phenol H2N — C6H4 — N = C6H4 = 0 is ...
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How Optical Illusions Help Restore Art
Give a pigment a bit of auxochrome and you get the best color possible. These methods are the ways that you make dyes." Roemich is a ... «Gizmodo, 四月 14»
Frida Kahlo & Diego Rivera: Masterpieces from the Gelman …
Her Chromophore, Auxochrome (1944) – an encoded portrait of herself and a lover – might have been made by Damien Hirst. Without Kahlo's ... «The Independent, 七月 11»
