title: Photoinduced electron transfer from phycoerythrin to colloidal metal semiconductor nanoparticles.
abstract: 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 TiO(2) nanoparticles, the apparent association constant for the association between colloidal metal-TiO(2) nanoparticles and phycoerythrin was determined from fluorescence quenching data. The free energy change (DeltaG(et)) for electron transfer process has been calculated by applying Rehm-Weller equation.
authors.affiliation: School of Chemistry, Bharathidasan University, Tiruchirappalli 620 024, Tamil Nadu, India.
authors.forename: A
authors.initials: A
authors.lastname: Kathiravan
authors.forename: M
authors.initials: M
authors.lastname: Chandramohan
authors.forename: R
authors.initials: R
authors.lastname: Renganathan
authors.forename: S
authors.initials: S
authors.lastname: Sekar
mesh_terms: D000042:Absorption; D017033:Anabaena / Q000737:chemistry; D003102:Colloids; D004563:Electrochemistry; D004579:Electron Transport; D004583:Electrons; D006046:Gold / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D008956:Models, Chemical; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D010777:Photochemistry; D010799:Phycoerythrin / Q000737:chemistry*; D045663:Quantum Dots; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D055672:Static Electricity; D013816:Thermodynamics; D014025:Titanium / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D003102:Colloids; D010799:Phycoerythrin; C009495:titanium dioxide; D006046:Gold; D014025:Titanium