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UV Visible Spectroscopy, 19PH34 - Coggle Diagram
UV Visible Spectroscopy
Ability to consume maximum energy at a particular wavelength
λmax is inversely propotional to energy
200nm - Maximum energy
800nm - Low energy
Hypsochromic shift / Blue Shift- shifted towards shorter wavelength max energy
Bathochromic shift/ Red shift- shifted towards lomger wavelenght min energy
Hyperchromic Effect- increase in absorption intensity
Hypochromic Effect- Decrease in absorption intensity
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• Molar Absorptivity is defined as a measure of a chemical's ability to
absorb light at a specified wavelength.
Chromophore -Any group of atoms that absorbs light whether or not a color is thereby
produced. e.g. C=C, C=O, NO2 etc..,
• An auxochrome is a group of atoms attached to a chromophore which
modifies the ability of that chromophore to absorb light
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