I'm looking to purchase some LEDs for my photoisomerization experiments. But they are of many types (e.g. having glass lens, ball lens, glass cover etc.). So I would be thankful if I can get some advice on that.
Dear Monika Gupta , probably the most relevant points to choose a LED for photoisomerization would be the wavelength or wavelenth range were the photoisomerization occurs with your molecules and then the LED´s irradiance and /or the power output. LED´s often has a wide angle of view, and to focalize the light lenses are added.
If you are using a photoreactor you could place LED´s pointing towards the center of it and/or in the internal cavity where traditionally lamps were placed, with the LED´s pointing towards the solution inside the reactor.
We use to place the light source inside and coat the external part of the photoreactor with Al foil to take advance of reflections on this material.
Be aware that today you could find LED´s with a wide emission area. Also, specially if you need UV light, that glass containers abosorbs there.
Hope it helps.
Dear Manuel Gómez , thank you very much for your valuable suggestions.
Hi Gupta,
You may make an inquiry at Alfa Chemistry, which offers kinds of optical materials for research use. https://materials.alfachemic.com/inquiry
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