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Light-emitting diode therapy (LEDT) is an therapeutic approach using different wavelengths of LED lights to treat disease. (The diagram is a blue light therapy, 415 nm wavelength) Light-emitting diode therapy (LEDT) is a clinical approach that applies different wavelengths of light to cure
The photosensitizer absorbs light and is promoted from its ground singlet state (1 PS) to an excited singlet state (1 PS*). Alternatively, the photosensitizer can convert to an excited triplet state (3 PS*) by intersystem crossing. This is a longer-living state that allow sufficient time for chemical reactions to occur.
The structure is two phenyl rings joined with a N=N double bond and is the simplest aryl azo compound. Azobenzene and its derivatives have two accessible absorbance bands: the S 1 state from a n-π* transition which can be excited into using blue light, and the S 2 state from a π-π* transition that can be excited into using ultraviolet light. [6]
Blue light therapy is a non-invasive treatment that uses blue wavelength range. With this type of therapy, there is no recovery time and it’s typically used for people with moderate to severe acne .
Blue light therapy is an effective acne treatment and is useful for preventing early skin cancers. Here are all the facts, and the best blue light devices. Blue Light Therapy Cured My Acne, Here ...
Photodynamic therapy ... a photosensitiser is in its excited state ... ) One phase II trial, while it showed improvement, was not superior to blue/violet light alone.