Academic Journal
Optimized local synthetic conditions induce size reduction and phase purification in {[Fe(Htrz)2(trz)](BF4)}n spin crossover particles
| العنوان: | Optimized local synthetic conditions induce size reduction and phase purification in {[Fe(Htrz)2(trz)](BF4)}n spin crossover particles |
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| المؤلفون: | Castel, Tristan, Marchetti, Anaïs, Houard, Felix, Daro, Nathalie, Marchivie, Mathieu, Chastanet, Guillaume, Bernot, Kevin |
| المساهمون: | Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut universitaire de France (IUF), Ministère de l'Education nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.), This work was supported by the University of Bordeaux, the CNRS, the ANR FlowSwitch (2019-CE07-0022-01), and the Region Nouvelle Aquitaine. The Region Bretagne (Boost’ERC RECoord No. 1122), the Institut Universitaire de France (IUF), and the INSA Rennes PPI program., ANR-19-CE07-0022,FlowSwith,Chimie en flux continu pour la synthèse de particules commutables à température ambiante(2019) |
| المصدر: | ISSN: 1528-7483. |
| بيانات النشر: | HAL CCSD American Chemical Society |
| سنة النشر: | 2023 |
| المجموعة: | Université de Rennes 1: Publications scientifiques (HAL) |
| مصطلحات موضوعية: | Chemical synthesis, Granular materials, Mixtures, Nanoparticles, Transmission electron microscopy, [CHIM.MATE]Chemical Sciences/Material chemistry |
| الوصف: | International audience ; The well-known synthesis of the two polymorphs of the {[Fe(Htrz)2(trz)](BF4)}n spin crossover coordination polymer is explored with new template-free methods that allow a control over the local synthetic conditions. A “one-pot” synthesis approach is developed, in which the solid reactants are mixed together before the addition of the solvent, which is expected to generate instantaneous supersaturation conditions favoring the nucleation of particles over their growth. In a second method, the addition of ultrasound pulses promotes the appearance of local “hot spots” that affect the local temperature and allow exploring a different region of the concentration–temperature phase diagram, leading to an increase in the phase purity of the product. These two syntheses are compared to the classical method in which the reactants are first dissolved in separate solutions before being mixed. The use of a one-pot synthesis, with or without ultrasound pulses, induces a downsizing of the particle size by a factor of 500 on their volume. The addition of ultrasound pulses allows moving from a mixture of polymorphs I and II of this compound to the pure phase I. These approaches open the way to more studies on the control over the size or phase purity in such molecular compounds, without the use of any surfactant. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| Relation: | hal-03945807; https://hal.science/hal-03945807; https://hal.science/hal-03945807/document; https://hal.science/hal-03945807/file/CastelT_CrystalGrowthandDesign_2023.pdf |
| DOI: | 10.1021/acs.cgd.2c01237 |
| الاتاحة: | https://hal.science/hal-03945807 https://hal.science/hal-03945807/document https://hal.science/hal-03945807/file/CastelT_CrystalGrowthandDesign_2023.pdf https://doi.org/10.1021/acs.cgd.2c01237 |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.F0D77819 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1021/acs.cgd.2c01237 |
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