[Hachiko]

Could we detect an organic compound by TLC with UV lamp if it is not fluorescent?

[AWK]

You may use many visualizing agents.

[Hachiko]

Sorry for my unclear question, I mean using UV lamp to detect non-fluorescent compound. So there is no way for UV lamp to detect this kind of compound?
This compound contains some of aromatic rings, could you recommend appropriate visualizing agent for this?

[AWK]

Some chromatographed compounds quench the indicator fluorescence and in this way become visible.

[Hachiko]

Thank you for your advice, but could you give some detail methods? I know about chemical stain but it's efficient used for some oxidizable groups or unsaturated bonds.

[AWK]

https://www.chemistry.mcmaster.ca/adronov/resources/Stains_for_Developing_TLC_Plates.pdf
Most books on TLC give more recipes.

[Hachiko]

Thank you so much.

[Babcock_Hall]

Compounds with aromatic rings quenched fluorescence in my experience, but perhaps there are exceptions.  If you have other functional groups, perhaps we could help select a stain.

[Hachiko]

Sorry, I may get misunderstanding about mechanism of TLC monitor under UV light. So a non-fluorescent compound is also visible as a dark spot under UV light if it absorbs the UV light, is it? And a fluorescent compound is visible as a colored spot depending on the wavelength of fluorescence under UV light.

[rolnor]

Sorry, I may get misunderstanding about mechanism of TLC monitor under UV light. So a non-fluorescent compound is also visible as a dark spot under UV light if it absorbs the UV light, is it? And a fluorescent compound is visible as a colored spot depending on the wavelength of fluorescence under UV light.

Yes

[Hachiko]

Thank you all.