Effects of substituent position on aminobenzoate relaxation pathways in solution

Abstract

The negative effects of ultraviolet radiation (UVR) on human skin have led to the widespread use of sunscreens, i.e. skincare products containing UV filters to absorb, reflect or otherwise block...

Theoretical Insights into the Ultrafast Deactivation Mechanism and Photostability of a Natural Sunscreen System: Mycosporine Glycine

“…These energy components have an impact on the earth’s biosphere . Although UVR can be beneficial, for example, the production of vitamin D being essential for prevention of skeletal disease, − there are lots of concerns regarding its hazardous effects on life. − The damaging effects of overexposure to UVR have been widely reported in previous studies and reviews, including cataract formation, skin aging, DNA mutation, and skin cancer. − Hence, the need for a balance between exposure to UVR and protection against overexposure to UVA and UVB is of crucial importance …”

“…17 A good candidate for an efficient UV-filter (the active ingredient within sunscreens) should have efficient nonradiative decay and long-term photostability to dissipate the excess absorbed energy safely and quickly to regenerate the original ground-state molecule ready for reabsorption of another photon. 12 Photoprotection in micro-and macroorganisms is achieved by a number of different molecules. 18 The particular family of molecules of interest here are mycosporines and mycosporinelike amino acids (MAAs).…”

“…A well-known example of this issue is the UV filter avobenzone . A good candidate for an efficient UV-filter (the active ingredient within sunscreens) should have efficient nonradiative decay and long-term photostability to dissipate the excess absorbed energy safely and quickly to regenerate the original ground-state molecule ready for reabsorption of another photon …”