PMID- 21167967 OWN - NLM STAT- MEDLINE DCOM- 20110331 LR - 20101220 IS - 1873-4324 (Electronic) IS - 0003-2670 (Linking) VI - 683 IP - 2 DP - 2011 Jan 10 TI - Analysis of time-dependent conjugation of gold nanoparticles with an antiparkinsonian molecule by using curve resolution methods. PG - 170-7 LID - 10.1016/j.aca.2010.10.014 [doi] AB - 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. CI - Copyright (c) 2010 Elsevier B.V. All rights reserved. FAU - Amigo, Jose Manuel AU - Amigo JM AD - 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 FAU - Bastus, Neus G AU - Bastus NG FAU - Hoen, Rob AU - Hoen R FAU - Vazquez-Campos, Socorro AU - Vazquez-Campos S FAU - Varon, Miriam AU - Varon M FAU - Royo, Miriam AU - Royo M FAU - Puntes, Victor AU - Puntes V LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101030 PL - Netherlands TA - Anal Chim Acta JT - Analytica chimica acta JID - 0370534 RN - 0 (Antiparkinson Agents) RN - 7440-57-5 (Gold) SB - IM MH - Antiparkinson Agents/*chemistry MH - Gold/*chemistry MH - Kinetics MH - Least-Squares Analysis MH - Metal Nanoparticles/*chemistry MH - Spectrophotometry, Ultraviolet/*methods MH - Thermodynamics MH - Time Factors EDAT- 2010/12/21 06:00 MHDA- 2011/04/01 06:00 CRDT- 2010/12/21 06:00 PHST- 2010/07/27 00:00 [received] PHST- 2010/10/11 00:00 [revised] PHST- 2010/10/12 00:00 [accepted] PHST- 2010/12/21 06:00 [entrez] PHST- 2010/12/21 06:00 [pubmed] PHST- 2011/04/01 06:00 [medline] AID - S0003-2670(10)01298-5 [pii] AID - 10.1016/j.aca.2010.10.014 [doi] PST - ppublish SO - Anal Chim Acta. 2011 Jan 10;683(2):170-7. doi: 10.1016/j.aca.2010.10.014. Epub 2010 Oct 30.