title: Analysis of time-dependent conjugation of gold nanoparticles with an antiparkinsonian molecule by using curve resolution methods.
abstract: In this work, the time-dependent conjugation process between a thiolated molecule (with anti-parkinsonian properties) and gold nanoparticles has been monitored and studied by the combined use of fast acquisition Ultra Violet-Visible (UV-Vis) spectra and the ability of Multivariate Curve Resolution-Alternating Least Squares (MCR-ALS) technique. From the highly informative kinetic profiles obtained it was possible to extract quantitative and qualitative information of the conjugation process which includes i) time-dependent concentration profiles and pure spectra of species involved on conjugation process, ii) estimation of molecule concentration necessary for the completeness of the conjugation reaction, iii) molecule footprint and iv) free energy of molecule adsorption.
authors.affiliation: Department of Food Science, Quality & Technology, Faculty of Life Sciences, University of Copenhagen, Rolighedsvej 30, DK-1958 Copenhagen, Frederiksberg C, Denmark. jmar@life.ku.dk
authors.forename: José Manuel
authors.initials: JM
authors.lastname: Amigo
authors.forename: Neus G
authors.initials: NG
authors.lastname: Bastús
authors.forename: Rob
authors.initials: R
authors.lastname: Hoen
authors.forename: Socorro
authors.initials: S
authors.lastname: Vázquez-Campos
authors.forename: Miriam
authors.initials: M
authors.lastname: Varón
authors.forename: Miriam
authors.initials: M
authors.lastname: Royo
authors.forename: Victor
authors.initials: V
authors.lastname: Puntes
mesh_terms: D000978:Antiparkinson Agents / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D007700:Kinetics; D016018:Least-Squares Analysis; D053768:Metal Nanoparticles / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet / Q000379:methods*; D013816:Thermodynamics; D013997:Time Factors
chemical_list: D000978:Antiparkinson Agents; D006046:Gold