Group B Dienes, Conjugated Systems and Pericyelic Reactions 1. If longer wavelength U UV VA radiation is better for getting a nice tan and both molecules A and B absorb B radiation which is responsible for sunburns, explain which molecule would be a better sunscreen for tanning (explain using HOMO-LUMO). ??
Solution
Tanning is a proces of changing colour under the influence of UV light by sun. Tanning is more effective at higher wavelengths of UV light absorption.
Among the two given molecules, molecule B would absorb sun light at higher wavelengths(More energy gap between Homo to Lumo) than the molecule A due to presence of extended conjugation in molecule B.
Pi bond Conjugation enhances the absorption wavelength maximum to higher wavelengths.
Based on this, molecule B can work as a better sunscreen for tanning.
.
Group B Dienes- Conjugated Systems and Pericyelic Reactions 1- If long.docx
1. Group B Dienes, Conjugated Systems and Pericyelic Reactions 1. If longer wavelength U UV
VA radiation is better for getting a nice tan and both molecules A and B absorb B radiation
which is responsible for sunburns, explain which molecule would be a better sunscreen for
tanning (explain using HOMO-LUMO). ??
Solution
Tanning is a proces of changing colour under the influence of UV light by sun. Tanning is more
effective at higher wavelengths of UV light absorption.
Among the two given molecules, molecule B would absorb sun light at higher wavelengths(More
energy gap between Homo to Lumo) than the molecule A due to presence of extended
conjugation in molecule B.
Pi bond Conjugation enhances the absorption wavelength maximum to higher wavelengths.
Based on this, molecule B can work as a better sunscreen for tanning.
