22.
Biloti B. N., dos Reis M. M., Ferreira M. M. C., Pessine F. B. T., “Photochemical behavior under UVA radiation of b-cyclodextrin included ParsolÒ1789 with a chemometric approach”. J. Mol. Struct., 481(Special Issue SI), 557-561 (May 1999).
[Special issue Molecular Spectroscopy and Molecular Structure with contributions from EUCMOS XXIV, the 24th European Congress on Molecular Spectroscopy, held in Prague, Czech Republic on 23 - 28 August 1998. See Notes.]
[Article. Cited in radiation and photochemistry bibliographic database at the Radiation Chemistry Data Center of the Notre Dame Radiation Laboratory:
http://allen.rad.nd.edu/     See Notes2.]
 

Abstract.
In this work, the photochemical behavior of b-cyclodexhin (bCD) encapsulated ParsolÒ 1789 sunscreen under
ultraviolet radiation UVA (320-400 nm) is reported using chemometrics. The photochemical study on the free and bCD
included molecule in some solvents was carried out under UYA Light and probing by fluorescence and absorption
spectroscopies. The chemometric method developed by Lawton and Sylvestre was employed in order to resolve the spectra
and the concentration profiles. The results showed that bCD complexation did not increase the ParsolÒ photochemical
stability, regardless of the employed solvents. However, it may reduce the effects related to;photoallergy/phototoxicity through
inclusion of the photoproducts.

Keywords.
Photochemistry; Chemometrics; Encapsulation; Fluorescence Absorption Spectroscopies.

Keywords Plus.
Dibenzoylmethane; Fluorescence; Complexation; Cavities.