Solvent effects on sunscreen active ingredients using Raman spectroscopy

被引:31
作者
Beyere, L [1 ]
Yarasi, S [1 ]
Loppnow, GR [1 ]
机构
[1] Univ Alberta, Dept Chem, Edmonton, AB T6G 2G2, Canada
关键词
sunscreens; solvent effects; intensity; applications;
D O I
10.1002/jrs.1042
中图分类号
O433 [光谱学];
学科分类号
0703 ; 070302 ;
摘要
We present Raman spectra of five sunscreen active ingredients in 10 solvents. Shifts in the UV absorption maxima and the C=O Raman mode wavenumber are observed for some of the sunscreens as a function of solvent. Correlations between the observed wavenumber shifts and solvent properties indicate that hydrogen bonding is a key interaction between sunscreen active ingredients and solvent. Interestingly, the relative Raman intensities are also sensitive to the hydrogen-bonding and polarizability properties of the solvent, reflecting differential stabilization of the sunscreen's resonance structures. These results suggest an 'expanded polarizability' view of the solvent's effect on the solute. The observed wavenumber and relative intensity changes were also utilized to identify the active agents present in commercial sunscreen preparations from their in situ Raman spectra. Copyright (C) 2003 John Wiley Sons, Ltd.
引用
收藏
页码:743 / 750
页数:8
相关论文
共 29 条
[1]  
AGRAPIDISPALOYMPIS LE, 1987, J SOC COSMET CHEM, V38, P209
[2]   Photochemical formation of singlet molecular oxygen in illuminated aqueous solutions of several commercially available sunscreen active ingredients [J].
Allen, JM ;
Gossett, CJ ;
Allen, SK .
CHEMICAL RESEARCH IN TOXICOLOGY, 1996, 9 (03) :605-609
[3]   RAPID REACTION OF SINGLET MOLECULAR-OXYGEN (O-1(2)) WITH P-AMINOBENZOIC ACID (PABA) IN AQUEOUS-SOLUTION [J].
ALLEN, JM ;
ENGENOLF, S ;
ALLEN, SK .
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS, 1995, 212 (03) :1145-1151
[4]  
[Anonymous], 1978, DONOR ACCEPTOR APPRO
[5]  
BEYERE LH, 2000, THESIS U ALBERTA
[6]   Solvent-induced frequency shifts in the infrared spectrum of dimethyl sulfoxide in organic solvents [J].
Fawcett, WR ;
Kloss, AA .
JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (06) :2019-2024
[7]  
GASPARRO F P, 1987, Photochemistry and Photobiology, V45, p49S
[8]  
Gasparro FP, 1998, PHOTOCHEM PHOTOBIOL, V68, P243, DOI 10.1111/j.1751-1097.1998.tb09677.x
[9]  
HESTER E, 1981, J CHEM SOC F2, V77, P1535
[10]   RAMAN SPECTRA OF SCHIFF BASES OF RETINAL - (MODELS OF VISUAL PHOTORECEPTORS) [J].
HEYDE, ME ;
GILL, D ;
KILPONEN, RG ;
RIMAI, L .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1971, 93 (25) :6776-&