How Does Solvent Polarity Impact Absorption and Fluorescence Characteristics?

  • Thread starter Thread starter schordinger
  • Start date Start date
  • Tags Tags
    Polarity
Click For Summary
SUMMARY

Solvent polarity significantly influences the absorption and fluorescence characteristics of compounds, particularly affecting the wavelength of the maximum absorption peak and the absorption coefficient. The discussion highlights that the Franck-Condon factor plays a role in these phenomena. Additionally, fluorescent quantum yield is dependent on solvent polarity, with compounds like Fluorescein exhibiting stronger fluorescence in polar solvents, while others, such as Acrylodan, perform better in non-polar environments.

PREREQUISITES
  • Understanding of solvent polarity and its measurement.
  • Familiarity with the Franck-Condon principle in spectroscopy.
  • Knowledge of fluorescence theory and quantum yield concepts.
  • Basic principles of absorption spectroscopy.
NEXT STEPS
  • Research the Franck-Condon factor and its implications in spectroscopy.
  • Explore the relationship between solvent polarity and quantum yield in fluorescence.
  • Investigate the absorption characteristics of Fluorescein and Acrylodan in various solvents.
  • Learn about the effects of solvent environment on spectral properties of organic compounds.
USEFUL FOR

Chemists, spectroscopists, and researchers in photochemistry or materials science seeking to understand the impact of solvent polarity on fluorescence and absorption properties.

schordinger
Messages
22
Reaction score
0
changing absorptivity

Solvent polarity would affect the wavelength of max absorption peak, but how??

and How the solvent affect the absorption coefficient??

is that related sth called Franck-Condon factor??

Also, Flourescent quantum yield also depend on the solvent polarity??
How?? and Why??

Thx
 
Last edited:
Chemistry news on Phys.org
Actually...

I am really confuse that why some compound would fluoresce stronger in polar environment (solvent) than non-polar solvent, like Fluorescein, and some other compound, like Acrylodan would fluoresce stronger in Non-polar environment...??


It seem that Fluorescein is a interesting compound...
 

Similar threads

Graduate How Does MWI explain Type I PDC Photon Polarization Entanglement?
  • · Replies 19 ·
Replies
19
Views
864
Graduate Single molecule fluorescence microscopy and limits
  • · Replies 4 ·
Replies
4
Views
2K
Undergrad How to "think" of a polarizer in matrix representation?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad Non-locality by memory (Jung, 2020) applied to stochastic mechanics
  • · Replies 5 ·
Replies
5
Views
2K
Calculating Quantum Yields for Fluorescent Dyes
  • · Replies 1 ·
Replies
1
Views
11K
Graduate How Many Hidden Variables Would It Take to Model Photon Polarization?
  • · Replies 45 ·
2
Replies
45
Views
6K
Graduate Understanding molecular absorption of light (UV-Vis spectroscopy)
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Understanding Photon Absorption in Radio Wavelengths: 3 Key Questions Explored
  • · Replies 43 ·
2
Replies
43
Views
4K
Undergrad Understanding Self-Inductance of a Coil: How Does it Happen?
  • · Replies 23 ·
Replies
23
Views
4K
Graduate How does the Zeeman Effect contribute to laser cooling of atoms?
  • · Replies 4 ·
Replies
4
Views
4K