1. Temperature-dependent adsorption of surfactant molecules and associated crystallization kinetics of noncentrosymmetric Fe(IO3)(3) nanorods in microemulsions
- Author
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Ronan Le Dantec, Christine Galez, Rachid Ladj, Dominique Fontvieille, Rachid Hadji, Christiane Durand, Yannick Mugnier, Ewa Rogalska, Moustafa El-Kass, Didier Rouxel, Jean-Christophe Marty, Laboratoire SYstèmes et Matériaux pour la MEcatronique (SYMME), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Laboratoire d'automatique et de génie des procédés (LAGEP), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École Supérieure Chimie Physique Électronique de Lyon-Centre National de la Recherche Scientifique (CNRS), Institut Jean Lamour (IJL), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Centre Alpin de Recherche sur les Réseaux Trophiques et Ecosystèmes Limniques (CARRTEL), Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de la Recherche Agronomique (INRA), Structure et Réactivité des Systèmes Moléculaires Complexes (SRSMC), Institut de Chimie du CNRS (INC)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Institut National de la Recherche Agronomique (INRA)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry]), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), European Community [NMP4-LA-2010-246479], French-Swiss INTERREG IV program (project NAOMI), and French Agence Nationale de la Recherche (project NANOPOP) [08-NANO-041]
- Subjects
Materials science ,Context (language use) ,02 engineering and technology ,Crystal structure ,010402 general chemistry ,01 natural sciences ,Nanomaterials ,law.invention ,[SPI.MAT]Engineering Sciences [physics]/Materials ,Lattice constant ,Adsorption ,law ,Electron microscopy ,General Materials Science ,Microemulsion ,Chemical synthesis ,Crystallization ,[SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics ,[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] ,Mechanical Engineering ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,X-ray diffraction ,0104 chemical sciences ,Crystallography ,Chemical engineering ,Mechanics of Materials ,Optical materials ,Nanorod ,0210 nano-technology - Abstract
International audience; Aggregation-induced crystallization of iron iodate nanorods within organic-inorganic aggregates of primary amorphous precursors is probed by time-dependent hyper-Rayleigh scattering measurements in Triton X-100 based-microemulsions. In the context of a growing interest of noncentrosymmetric oxide nanomaterials in multi-photon bioimaging, we demonstrate by a combination of X-ray diffraction and electron microscopy that an increase in the synthesis of temperature results in faster crystallization kinetics and in a better shape-control of the final Fe(IO3)(3) nanorods. For initial microemulsions of fixed composition, room-temperature synthesis leads to bundles of 1-3 mu m long nanorods, whereas shorter individual nanorods are obtained when the temperature is increased. Results are interpreted in terms of kinetically unfavorable mesoscale transformations due to the strong binding interactions with Triton molecules. The interplay between the nanorod crystallization kinetics and their corresponding unit cell deformation, evidenced by lattice parameter refinements, is attributed to a temperature-dependent adsorption of surfactants molecules at the organic-inorganic interface.
- Published
- 2013
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