Femtosecond laser studies of excited state intramolecular proton transfer in an ultraviolet-filter molecule

Fournier, Thierry; Pommeret, S.; Mialocq, J.C.; Deflandre, André; Rozot, Roger

doi:10.1016/s0009-2614(00)00629-1

Cited by 29 publications

(19 citation statements)

References 33 publications

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“… Terephtalylidene dicamphor sulfonic acid (Mexoryl ® SX, Chimex, Le Thillay, France), a strong UVA absorber (4, 5), Drometrizole trisiloxane (Mexoryl ® XL, Rhodia, Boulogne Billancourt, France), a strong UVA and UVB absorber (6), Butyl methoxydibenzoylmethane avobenzone ® (Parsol ® 1789), Merck, Dermstadt, Germany octocrylene (Uvinul ® 539) combination, which controls avobenzone photoinduced degradation thus avoiding any loss in its high UVA absorbing properties. …”

Section: Uva Effectsmentioning

confidence: 99%

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Protection of skin biological targets by different types of sunscreens

Fourtanier

Bernerd

Bouillon

et al. 2006

Photoderm Photoimm Photomed

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In vitro and in vivo studies provide a body of evidence that adequate protection of the skin against ultraviolet (UV)-induced damage requires photostable broad-spectrum sunscreens with a proper level of UVA protection. UVA alone and UV solar simulated radiation (SSR) induce DNA lesions in keratinocytes and melanocytes as reflected by the comet assay and p53 accumulation. UVA and SSR impair the immune system as shown by significant alteration of Langerhans cells and inhibition of contact hypersensitivity response to chemical allergens and delayed-type hypersensitivity response to recall antigens. Any of these detrimental effects is more efficiently prevented by sunscreens with a higher level of protection in the UVA range. The involvement of UVA (fibroblast alteration, increased metalloproteinase expression) and the pivotal need for well-balanced UVA/UVB sunscreens were further demonstrated using reconstructed three-dimensional skin models.

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Section: Uva Effectsmentioning

confidence: 99%

“…Drometrizole trisiloxane (Mexoryl ® XL, Rhodia, Boulogne Billancourt, France), a strong UVA and UVB absorber (6),…”

Section: Uva Effectsmentioning

confidence: 99%

Protection of skin biological targets by different types of sunscreens

Fourtanier

Bernerd

Bouillon

et al. 2006

Photoderm Photoimm Photomed

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“…In most cases, the PT and the ICT reactions are considered to be decoupled as was observed in ultrafast pump-probe experiments [45]. The competition between excited state CT and PT processes have been studied systematically by Kasha's group in some molecular systems [46].…”

Section: Introductionmentioning

confidence: 99%

Evidence of coupled photoinduced proton transfer and intramolecular charge transfer reaction in para-N,N-dimethylamino orthohydroxy benzaldehyde: Spectroscopic and theoretical studies

et al. 2008

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“…The advantage mentioned above is based on its excited state intramolecular proton transfer (ESIPT) [19]. The advantage mentioned above is based on its excited state intramolecular proton transfer (ESIPT) [19].…”

Section: Introductionmentioning

confidence: 99%

Surface-enhanced Raman scattering and DFT computational studies of a benzotriazole derivative

Liao

Zhang

et al. 2008

Journal of Molecular Structure

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Here, we report the surface-enhanced Raman scattering (SERS) spectrum of 2-(2 0 -hydroxy-5 0 -methylphenyl)benzotriazole (Tinuvin P), a benzotriazole derivative that is the most widely used commercially available UV absorber or stabilizer and is used representatively for the research of photostability mechanism. A full assignment of the Raman spectrum has been made based on the scaled-DFT analysis of the normal vibrational modes. Through the comparative studies on the ordinary Raman spectrum and the SERS spectrum of Tinuvin P, we propose that this molecule binds the Au atom, via the O atom of the hydroxyl or the N1 atom of the benzotriazole moiety, with a perpendicular geometry.

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Femtosecond laser studies of excited state intramolecular proton transfer in an ultraviolet-filter molecule

Cited by 29 publications

References 33 publications

Protection of skin biological targets by different types of sunscreens

Protection of skin biological targets by different types of sunscreens

Evidence of coupled photoinduced proton transfer and intramolecular charge transfer reaction in para-N,N-dimethylamino orthohydroxy benzaldehyde: Spectroscopic and theoretical studies

Surface-enhanced Raman scattering and DFT computational studies of a benzotriazole derivative

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