TY - JOUR
T1 - Surface-enhanced Raman spectra of eye lens pigments
AU - Nie, Shuming
AU - Castillo, Carolina G.
AU - Bergbauer, Katrina L.
AU - Kuck, John F.R.
AU - Nabiev, Igor R.
AU - Yu, Nai Teng
PY - 1990
Y1 - 1990
N2 - Surface-enhanced Raman spectroscopy (SERS) has been applied to study lenticular pigments that are present in the eyes of certain diuranally active animals. Using Ag hydrosols pre-aggregated with NaClO4, we have obtained SERS spectra from dilute solutions of various model pigment compounds, including kynurenine, N-formylkynrenine, 3-hydroxykyn-urenine, β-carboline, bityrosine, anthranilic acid, 3-hydroxyanthranilic acid, and oxindole. The results obtained from these model compounds show that SERS is a particularly sensitive technique for the identification of lens pigments. We also report a procedure that enables high-quality SERS data to be obtained for the yellow pigments in the lens homogenates of grey squirrels, ground squirrels, and chipmunks.
AB - Surface-enhanced Raman spectroscopy (SERS) has been applied to study lenticular pigments that are present in the eyes of certain diuranally active animals. Using Ag hydrosols pre-aggregated with NaClO4, we have obtained SERS spectra from dilute solutions of various model pigment compounds, including kynurenine, N-formylkynrenine, 3-hydroxykyn-urenine, β-carboline, bityrosine, anthranilic acid, 3-hydroxyanthranilic acid, and oxindole. The results obtained from these model compounds show that SERS is a particularly sensitive technique for the identification of lens pigments. We also report a procedure that enables high-quality SERS data to be obtained for the yellow pigments in the lens homogenates of grey squirrels, ground squirrels, and chipmunks.
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U2 - 10.1366/0003702904087532
DO - 10.1366/0003702904087532
M3 - Article
AN - SCOPUS:0025434804
SN - 0003-7028
VL - 44
SP - 571
EP - 575
JO - Applied Spectroscopy
JF - Applied Spectroscopy
IS - 4
ER -