Effect of Solvents on UV/V Spectra of Benzophenone

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Discussion Overview

The discussion centers around the effect of solvents on the UV/V spectra of benzophenone, particularly focusing on how different types of solvents (polar and nonpolar) may influence the spectral characteristics of the compound. Participants explore concepts related to solvent interactions and their implications for spectral analysis.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant questions how solvents affect the spectra of benzophenone, suggesting that solvents might produce additional peaks due to their own absorption or reflection at certain wavelengths.
  • Another participant mentions the concept of solvent broadening, which could increase the bandwidth of the peaks, and hints at potential shifts in the spectra, although specifics are not detailed.
  • A suggestion is made to look into "Bathochromic Shift" and "Hypsochromic Shift" as relevant terms for understanding the effects of solvents on spectral shifts.

Areas of Agreement / Disagreement

Participants express uncertainty about the specific effects of solvents on the UV/V spectra, with no consensus reached on the exact mechanisms or outcomes of these interactions.

Contextual Notes

Participants note a lack of simple descriptions available online regarding the effects of solvents on spectral analysis, indicating potential limitations in accessible resources or foundational knowledge on the topic.

~christina~
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Ah this is a question because I'm new to UV/V spec.
What would a solvent do to a spectra of a compound when it is analyzed?

Such as a polar/non nonpolar solvent on benzophenone?

solvents such as:
Nonpolar :Ethanol, Cyclohexane, n-Hexane
Polar: Methylene chloride

I looked online but couldn't find a simple description of things that would occur.

I do think that the solvents could produce additional peaks on the spectra due to it absorbing/reflecting at certain wavelengths but other than that I'm not sure.

Thanks a lot :smile:
 
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I remember something along the lines of solvent broadening - increasing the bandwidth of the peaks - , along with something with do with shifts , or perhaps reflection ... Instrumental Analysis by Skoog should help , I'm going read upon this topic and answer your question when I have time.
 
GCT said:
I remember something along the lines of solvent broadening - increasing the bandwidth of the peaks - , along with something with do with shifts , or perhaps reflection ... Instrumental Analysis by Skoog should help , I'm going read upon this topic and answer your question when I have time.

Ah okay then.
Thank you GCT :smile:
 
Search terms: "Bathochromic Shift" and Hypsochromic Shift"
 
Thank you both.
 

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