Novel absorption and fluorescence characteristics of L-lysine

Chemistry Letters

Volumn , Issue 8, 2001, Pages 844-845

  Homchaudhuri, L ^a   Swaminathan, R ^a  

^a INDIAN INSTITUTE OF TECHNOLOGY GUWAHATI   (India)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0035538939     PISSN: 03667022     EISSN: None     Source Type: Journal    
DOI: 10.1246/cl.2001.844     Document Type: Article

References (17)

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9. Similar results were obtained in deionised water and 0.1 M acetate buffer, pH 4.6, Absorptions measurements were performed on a Hitachi spectrophotometer (Model U2001). Fluorescence data were acquired using a Shimadzu steady state fluorimeter (Model RF-5301PC).
10. The excitation at 290 nm was chosen to highlight the observation that emission peaks at 321 and 334 nm remain unaffected by concentration changes. There is a slight decrease in the intensity at 420 nm at concentrations higher than 0.3 M due to inner filter effect.
11. a) N. J. Turro, "Modern Molecular Photochemistry," University Science Books, Mill Valley, California (1991).
12. b) We experimented with L-lysine obtained from multiple sources including the Sigma Aldrich Company to rule out impurities.
13. c) Also extracts with ether from the L-lysine employed, failed to yield any extraneous component that could account for the observations.
14. a) K. Kalyanasundaram and J. K. Thomas, J. Am. Chem. Soc., 99, 2039 (1977).
15. b) Lower excitation slit width was used to minimise fluorescence contribution from lysine,
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17. d) K. Kalyanasundaram, "Photochemistry in Microheterogeneous Systems," Academic Press, New York (1987), p41.