[ROSETTA]

Hi does anyone have a website, or a book reference that I can use to find out the effect of changing solvent on the UV spectra of aromatic hydrocarbons.
Also can someone point me in the direction of a good website on UV spectroscopy
Thanks
Rosie

[Alpha-Omega]

Books Listed here:  http://www.chemlin.net/chemistry/uv_vis_spectroscopy.htm

More Theory:  http://teaching.shu.ac.uk/hwb/chemistry/tutorials/molspec/uvvisab1.htm

Gives more info on optics:  http://faculty.kutztown.edu/betts/html/UV_Vis_Absorbance.htm

General:  http://teaching.shu.ac.uk/hwb/chemistry/tutorials/molspec/uvvisab1.htm

[ARGOS++]

Dear Rosetta;

It is quite difficult to give you an “adequate” answer  for your “UV-Solvent” problem, if you can not narrow your question, because under the names: “Solvatochromic”, “Solvatochromic Shifts”, “Solvatochromism”, (etc.) exists a collection of various effects and influences.
Only a few examples: pH, “Tautomerism”, “Metamerism”,  “л – л* shift”, “n – л* shift”, “σ – σ* shift”, and mixtures of all, etc.

You may find some information about if you search on the NET for the terms I gave you in my first sentence.
There exists also some thumb rules, if you know about the polarity of the “Ground state” and the “Exited state” of your molecule of interest, – but that are only “thumb rules”.
For a very few examples of such effects I have pictures/spectra (qualitative), if you are interested in.

About UV/Vis Spectroscopy you can find a Lot on the NET of quite a number of universities, including some calculation examples (and Quiz).
Some, also some more rare answers you may find on:

"Spectroscopy FAQ”

I hope it gives you at least an Idea (also where to search).

Good Luck!
                    ARGOS⁺⁺

[ROSETTA]

thank you argos, i will do a search based on the info you supplied
Much appreciated
rosie