Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 72, Issue 3, Pages 496-501Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2008.10.021
Keywords
Colloidal metal semiconductors; Fluorescence quenching; Phycoerythrin
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Phycoerythrin is a water soluble pigment which absorbs in the visible region at 563 nm. The interaction of phycoerythrin with colloidal metal semiconductors was studied by absorption, FT-IR and fluorescence spectroscopy. Phycoerythrin adsorbed strongly on the surface of TiO2 nanoparticles, the apparent association constant for the association between colloidal metal-TiO2 nanoparticles and phycoerythrin was determined from fluorescence quenching data. The free energy change(Delta G(et)) for electron transfer process has been calculated by applying Rehm-Weller equation. (c) 2008 Elsevier B.V. All rights reserved.
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