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Interactions between colloidal silver and photosynthetic pigments located in cyanobacteria fragments and in solution

Paper ID Volume ID Publish Year Pages File Format Full-Text
30979 44523 2007 5 PDF Available
Title
Interactions between colloidal silver and photosynthetic pigments located in cyanobacteria fragments and in solution
Abstract

Changes in the yield of the fluorescence emitted by pigments of photosynthetic organisms could be used for the establishment of the presence of some toxic substances. The presence of colloidal metals can be indicated by enhancement of pigments’ emission as a result of plasmons generation. The spectra of the pigments of cyanobacterium Synechocystis located in the bacterium fragments and in solutions with and without colloidal silver additions have been measured. The quantum yield of the pigments’ fluorescence in solution has been observed to increase at some wavelength of excitation, while the fluorescence of the pigments in the bacteria fragments has been only quenched as a consequence of interactions with colloidal silver particles. Close contact between pigment molecules located in bacteria fragments and silver particles is probably not possible.We plan in future to investigate the influence of other, more typical metal pollutants of water, using similar spectral methods and several other photosynthetic bacteria pigments, in solution, in cell fragments and in the whole bacteria organisms.

Keywords
Absorption; Cyanobacteria; Fluorescence; Surface plasmons; Surface plasmon coupled emission
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Interactions between colloidal silver and photosynthetic pigments located in cyanobacteria fragments and in solution
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 88, Issues 2–3, 25 September 2007, Pages 126–130
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us