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Relevant bibliographies by topics / Mesoporous hybrid silica

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Academic literature on the topic 'Mesoporous hybrid silica'

Author: Grafiati

Published: 25 May 2024

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Journal articles on the topic "Mesoporous hybrid silica"

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Sriyanti, Sriyanti. "Encapsulation of Alkaline Phosphatase in Mesoporous Methyl-Silica Hybrid by Sol-Gel Process." Jurnal Kimia Sains dan Aplikasi 20, no. 3 (October 1, 2017): 110–13. http://dx.doi.org/10.14710/jksa.20.3.110-113.

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In recent years, the sol-gel technique has attracted increasing interest as a unique approach to immobilize biomolecules for bioanalitical applications as well as biochemical and biophysical studies. In this research, encapsulation of Alkaline Phosphatase (ALP) enzyme in mesoporous methyl-silica hybrid by sol-gel process has been carried out. Mesoporous methyl-silica hybrid has been synthesis by using tetraethylorthosilicate (TEOS) and methyltriethoxysilane (MTES) as precursor and poly(ethylene) glycol (PEG) as a polymer dopant. The preparation of methyl-silica hybrid was carried out at various mol ratios of precursors and PEG concentration. Encapsulation was emphasized by mixing sol solution and tris-HCl buffer containing ALP. The Surface Area Analyzer analysis data showed that the pore diameter and surface area of methyl-silica hybrid tended to increase as the PEG dopant concentration increases. Result showed that ALP encapsulated in the methyl-silica hybrids with PEG dopant gave enzymatic activity as 0.112 U/mg enzyme, higher than ALP encapsulated in copolymerization of TEOS with MTES or in silica from TEOS precursor only (0.098 U/mg enzyme and 0.069 U/mg enzyme, respectively). It was shown that copolymerization of TEOS with organosilane precursor and the entrapment of polymer additives into sol-gel processed materials are useful methods for modifying the internal environment and hence the activity of biomolecules entrapped in sol-gel derived biomaterials.

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El Kadib, Abdelkrim, Nadia Katir, Mosto Bousmina, and Jean Pierre Majoral. "Dendrimer–silica hybrid mesoporous materials." New J. Chem. 36, no. 2 (2012): 241–55. http://dx.doi.org/10.1039/c1nj20443b.

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Wang, Di, Jie Hu, and Rong Zhao. "A ternary hybrid nanoreactor with thermoswitchable catalytic performance." RSC Advances 5, no. 101 (2015): 82732–35. http://dx.doi.org/10.1039/c5ra15921k.

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A hybrid nanoreactor comprised of a mesoporous silica “head” and poly(N-isopropylacrylamide) long chain “hairs” has been developed. The Ag nanoparticles contained in the mesoporous silica are demonstrated a thermoswitchable catalytic performance.

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Pasqua, Luigi, Ilaria Ester De Napoli, Marzia De Santo, Marianna Greco, Enrico Catizzone, Domenico Lombardo, Gabriella Montera, et al. "Mesoporous silica-based hybrid materials for bone-specific drug delivery." Nanoscale Advances 1, no. 8 (2019): 3269–78. http://dx.doi.org/10.1039/c9na00249a.

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Sultana, S., Md A. Alam, M. Takafuji, and H. Ihara. "Hybrid mesoporous microspheres from aqueous droplets containing a silica nanoparticle–polymer network in a W/O suspension." RSC Advances 6, no. 49 (2016): 42756–62. http://dx.doi.org/10.1039/c6ra05173a.

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Mesoporous hybrid microspheres were fabricated from aqueous droplets of homogeneously distributed silica nanoparticles and reactive polymer in W/O suspension. Further calcination provides mesoporous silica microspheres.

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Yu, Wenpeng, Xiaowei Zhu, Jichun Liu, and Jianliang Zhou. "Biofunctionalized Decellularized Tissue-Engineered Heart Valve with Mesoporous Silica Nanoparticles for Controlled Release of VEGF and RunX2-siRNA against Calcification." Bioengineering 10, no. 7 (July 20, 2023): 859. http://dx.doi.org/10.3390/bioengineering10070859.

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The goal of tissue-engineered heart valves (TEHV) is to replace normal heart valves and overcome the shortcomings of heart valve replacement commonly used in clinical practice. However, calcification of TEHV is the major bottleneck to break for both clinical workers and researchers. Endothelialization of TEHV plays a crucial role in delaying valve calcification by reducing platelet adhesion and covering the calcified spots. In the present study, we loaded RunX2-siRNA and VEGF into mesoporous silica nanoparticles and investigated the properties of anti-calcification and endothelialization in vitro. Then, the mesoporous silica nanoparticle was immobilized on the decellularized porcine aortic valve (DPAV) by layer self-assembly and investigated the anti-calcification and endothelialization. Our results demonstrated that the mesoporous silica nanoparticles delivery vehicle demonstrated good biocompatibility, and a stable release of RunX2-siRNA and VEGF. The hybrid decellularized valve exhibited a low hemolysis rate and promoted endothelial cell proliferation and adhesion while silencing RunX2 gene expression in valve interstitial cells, and the hybrid decellularized valve showed good mechanical properties. Finally, the in vivo experiment showed that the mesoporous silica nanoparticles delivery vehicle could enhance the endothelialization of the hybrid valve. In summary, we constructed a delivery system based on mesoporous silica to biofunctionalized TEHV scaffold for endothelialization and anti-calcification.

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Li, Ying, Jie Lin Wang, Wei Chain, Xia Wang, Hua Ti Li, and Shuang He Liu. "Luminescent Hybrids of Eu³⁺ Complexes Covalently Bonded with Mesoporous Silica and PMAA." Advanced Materials Research 749 (August 2013): 82–86. http://dx.doi.org/10.4028/www.scientific.net/amr.749.82.

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Binary organic-inorganic mesoporous hybrid materials were prepared by covalntly grafting Lanthanide (III) (Eu) trifluoroacetylaceton (TAA) complexes to the ordered meosoporous silica SBA-15 via hydrothermal method and hydrolysis and co-polycondensation method with the surfactant P123 and TEOS. Besides, Novel ternary lanthanide (III) (Eu) organic-inorganic-polymeric mesoporous hybrid materials have been synthesized as well through the introduction of the organic polymer PMAA to the binary system with covalent bond. We investigated the thermal stability and luminescence properties of hybrids and found that the ternary hybrid materials exhibit better thermal stability and stronger emission intensity. Furthermore, compared with the binary mesoporous material Eu (TAA-SBA-15)3, the ternary mesoporous material Eu (TAA-SBA-15)3PMMA exhibits the characteristic emission of the Eu3+ ion with a higher luminescence Intensity, suggesting that the introduction of polymer PMMA into the mesoporous matrix is of benefit for the sensitization of Eu3+ luminescence, by replacing H2O groups that can quench the luminescence of Eu3+ ion.

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Angelomé, Paula C., Sara Aldabe-Bilmes, Mauricio E. Calvo, Eduardo L. Crepaldi, David Grosso, Clément Sanchez, and Galo J. A. A. Soler-Illia. "Hybrid non-silica mesoporous thin films." New J. Chem. 29, no. 1 (2005): 59–63. http://dx.doi.org/10.1039/b415324c.

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Kaczmarek, Anna M., Dolores Esquivel, Judith Ouwehand, Pascal Van Der Voort, Francisco J. Romero-Salguero, and Rik Van Deun. "Temperature dependent NIR emitting lanthanide-PMO/silica hybrid materials." Dalton Transactions 46, no. 24 (2017): 7878–87. http://dx.doi.org/10.1039/c7dt01620d.

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A mesoporous silica and a periodic mesoporous organosilica functionalized with dipyridyl-pyridazine were grafted with Nd³⁺, Er³⁺, and Yb³⁺ complexes to obtain hybrid NIR emitting materials.

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Wang, Wenjing, Julius Motuzas, Xiu Song Zhao, Suresh K. Bhatia, and João C. Diniz da Costa. "Enhanced CO2 sorption efficiency in amine-functionalised 2D/3D graphene/silica hybrid sorbents." Chemical Communications 54, no. 75 (2018): 10586–89. http://dx.doi.org/10.1039/c8cc06373g.

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Owing to the geometrical features of 2D graphene intercalated into 3D mesoporous silica, CO₂ sorption increased by 51% and the heat of sorption reduced by up to 27% as compared to a pure 3D mesoporous silica sorbent without graphene.

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Dissertations / Theses on the topic "Mesoporous hybrid silica"

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Meoto, Silo, and Marc-Olivier Coppens. "Anodic alumina-mesoporous silica hybrid membranes." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-184904.

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Cucinotta, F., F. Carniato, and L. Marchese. "Hybrid Photonic Antennae Based on Mesoporous Silica Frameworks." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35498.

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This contribution describes design, preparation and physico-chemical characterization of a new photo-stable hybrid antenna based on mesoporous SBA-15 silica. Concepts of host-guest chemistry are applied in such a way that one or more photoactive guest molecules are incorporated into the silica channels and on the outer surface, acting as energy harvesting and transferring units. The presented composite system be-haves as efficient Förster resonance energy transfer (FRET) pair and shows high photoluminescence and stability towards photodegradation, representing an important step forward in the search for new efficient materials with opto-electronic applications. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35498

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Noble, Kate. "Preparation of organically modified mesoporous materials via sol-gel processing." Thesis, University of Sheffield, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.340139.

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Lai, Peng. "Mesoporous Silica Nanowires by Space-confined Organic-Inorganic Hybrid Self-Assembly." University of Cincinnati / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1172113649.

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Meoto, Silo, and Marc-Olivier Coppens. "Anodic alumina-mesoporous silica hybrid membranes: a systematic study of alumina filling." Diffusion fundamentals 16 (2011) 34, S. 1-2, 2011. https://ul.qucosa.de/id/qucosa%3A12715.

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Göbel, Ronald. "Hybridmaterialien aus mesoporösen Silica und ionischen Flüssigkeiten." Phd thesis, Universität Potsdam, 2011. http://opus.kobv.de/ubp/volltexte/2011/5402/.

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Die vorliegende Arbeit beschäftigt sich mit der Synthese und Charakterisierung mesoporöser monolithischer Silica und deren Hybridmaterialien mit Ionischen Flüssigkeiten (ILs, ionic liquids). Zur Synthese der Silicaproben wurde ein Sol-Gel-Verfahren, ausgehend von einer Präkursorverbindung wie Tetramethylorthosilicat angewendet. Der Katalysator mit der geringsten Basizität führte zum Material mit der kleinsten Porengröße und der größten spezifischen Oberfläche. Eine Kombination von porösen Silica mit ILs führt zur Materialklasse der Silica-Ionogele. Diese Hybridmaterialien verbinden die Eigenschaften eines porösen Festkörpers mit denen einer IL (Leitfähigkeit, weites elektrochemisches Fenster, gute thermische Stabilität) und bieten vielfältige Einsatzmöglichkeiten z.B. in der Katalyse- Solar- und Sensortechnik. Um diese Materialien für ihren Verwendungszweck zu optimieren, bedarf es deren umfassenden Charakterisierung. Daher wurde in der vorliegenden Arbeit das thermische Verhalten von Silica-Ionogelen unter Verwendung verschiedener 1-Ethyl-3-methylimidazolium [Emim]-basierter ILs untersucht. Interessanterweise zeigen die untersuchten ILs deutliche Änderungen in ihrem thermischen Verhalten, wenn diese in porösen Materialien eingeschlossen werden (Confinement). Während sich die untersuchten reinen ILs durch klar unterscheidbare Phasenübergänge auszeichnen, konnten für die entsprechenden Hybridmaterialien deutlich schwächer ausgeprägte Übergänge beobachtet werden. Einzelne Phasenübergänge wurden unterdrückt (Glas- und Kristallisationsübergänge), während z.B. Schmelzübergänge in verbreiterten Temperaturbereichen, zum Teil als einzeln getrennte Schmelzpeaks beobachtet wurden. Diese Untersuchungen belegen deutliche Eigenschaftsänderungen der ILs in eingeschränkten Geometrien. Über Festkörper-NMR-Spektroskopie konnte außerdem gezeigt werden, daß die ILs in den mesoporösen Silicamaterialien eine unerwartet hohe Mobilität aufweisen. Die ILs können als quasi-flüssig bezeichnet werden und zeigen die nach bestem Wissen höchste Mobilität, die bisher für vergleichbare Hybridmaterialien beobachtet wurde. Durch Verwendung von funktionalisierten Präkursoren, sowie der Wahl der Reaktionsbedingungen, kann die Oberfläche der Silicamaterialien chemisch funktionalisiert werden und damit die Materialeigenschaften in der gewünschten Weise beeinflußt werden. In der vorliegenden Arbeit wurde der Einfluß der Oberflächenfunktionalität auf das thermische Verhalten hin untersucht. Dazu wurden zwei verschiedene Möglichkeiten der Funktionalisierung angewendet und miteinander verglichen. Bei der in-situ-Funktionalisierung wird die chemische Funktionalität während der Sol-Gel-Synthese über ein entsprechend funktionalisiertes Silan mit in das Silicamaterial einkondensiert. Eine postsynthetische Funktionalisierung erfolgt durch Reaktion der Endgruppen eines Silicamaterials mit geeigneten Reaktionspartnern. Um den Einfluß der physikalischen Eigenschaften der Probe auf die Reaktion zu untersuchen, wurden pulverisierte und monolithische Silicamaterialien miteinander verglichen. Im letzten Teil der Arbeit wurde die Vielfältigkeit, mit der Silicamaterialien postsynthetisch funktionalisiert werden können demonstriert. Durch die Kenntnis von Struktur-Eigenschaftsbeziehungen können die Eigenschaften von Silica-Ionogelen durch die geeignete Kombination von fester und mobiler Phase in der gewünschten Weise verändert werden. Die vorliegende Arbeit soll einen Beitrag zur Untersuchung dieser Beziehungen leisten, um das Potential dieser interessanten Materialien für Anwendungen nutzen zu können.
This work describes the synthesis and characterization of mesoporous monolithic silica and its hybrid materials with ionic liquids (ILs). For synthesis of the silica samples a sol-gel method was used. The catalyst with the weakest basicity leads to the material with the smallest pore size and the largest specific surface area. Combination of porous silica with ILs yields silica-ionogels. These hybrid materials combine the properties of porous solids with the properties of ILs (which is e.g. high conductivity, wide electrochemical stability window, and good thermal stability) and therefore offer a variety of possible applications like catalysis, solar and sensing. To optimize these materials for specific applications there is a need to understand their structure-composition-property relations. For this reason the thermal behavior of silica-ionogels was studied using different 1-ethyl-3-methylimidazolium [Emim]-based ILs. Interestingly the ILs show a clear change in their thermal behavior upon confinement in porous silica. Whereas the pure ILs show distinct phase transitions, the hybrid materials exhibit considerably weaker phase transitions. Phase transitions are suppressed (glass- and crystallization phase transitions); melting transitions show multiple melting peaks. Furthermore solid-state NMR also shows that ILs in mesoporous silica exhibit unusual high mobility. The confined ILs can therefore be classified as quasi-liquid and represents to our best knowledge the highest mobility observed so far in ionogels. By using functionalized silane precursors and different reaction conditions the silica surface was chemically functionalized which further changes the material properties. In a final approach a post-synthetic functionalization was performed by reaction of the selected groups of a silica material with suitable reactants. To study the effect of the physical appearance on the characteristics of the final material, powdered and monolithic samples were studied. In the last part of the work the versatility of post-synthetic silica functionalization was demonstrated. The current work contributes to a better understanding of structure-property correlations, to improve the potential of these interesting materials for possible applications.

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Oliveira, Fernando Jose Volpi Eusebio de. "Hibridos inorganico-organicos mesoporosos nanoestruturados = aspectos estruturais e energeticos das interações cations-centros basicos na interface solido/liquido." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250026.

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Orientador: Claudio Airoldi
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica
Made available in DSpace on 2018-08-15T02:31:23Z (GMT). No. of bitstreams: 1 Oliveira_FernandoJoseVolpiEusebiode_D.pdf: 14034511 bytes, checksum: befefa4bb08edceee361642b479a35ca (MD5) Previous issue date: 2009
Resumo: Três conjuntos de sílicas mesoporosas foram sintetizados com os agentes direcionadores dodecilamina, brometo de cetiltrimetilamônio (CTAB) e co-polímero tribloco EO20-PO70-EO20 (P123 ¿ Pluronic®). As matrizes inorgânicas foram funcionalizadas com agentes sililantes contendo de um a três átomos de nitrogênio nas cadeias. Além disso, estes silanos reagiram com o ligante tiocarbamida, em uma etapa livre de solvente, anteriormente à formação da sílica, em processo de co-condensação. A rota de síntese empregada para as amostras preparadas a partir do direcionador P123 foi a pósfuncionalização. Para as estruturas obtidas utilizando-se dodecilamina, do tipo HMS, observou-se o colapso da estrutura após a extração do direcionador, conforme mostraram os espectros de IV e os difratogramas antes e depois do processo de remoção. Contudo, as amostras apresentaram tamanho médio de poros na faixa que constituem os materiais mesoporosos, sendo então investigados no estudo da remoção de metais tóxicos. Para as amostras preparadas CTAB e P123 foram observados os sinais da reflexão típica de materiais do grupo p6mm, denominada 2D-hexagonal, cujas amostras análogas aos materiais MCM-41 e SBA-15, respectivamente. Todos os híbridos modificados com tiocarbamida foram aplicados em sorção de íons metálicos, ajustados ao modelo não linear de sorção de Langmuir. As interações na interface sólido/líquido foram determinadas por microcalorimetria. Os resultados revelaram que os materiais do tipo SBA-15 apresentam alta capacidade de remoção de Cu, Cd e Pb, devido ao procedimento de pós-funcionalização. As amostras obtidas por co-condensação, do tipo HMS e MCM-41, apresentaram capacidade máxima de sorção superior aos resultados observados na literatura para materiais análogos. Os experimentos calorimétricos mostraram que as interações entre os sólidos e os íons metálicos são exotérmicas, com exceção dos íons Pb. Outro aspecto destacado trata-se da importância do termo entrópico, que parece reger o processo na maioria dos casos, devido à liberação de moléculas de água coordenadas aos íons e às matrizes. Portanto, todos os sistemas estudados apresentaram um comportamento energeticamente favorável.
Abstract: Three set of mesoporous silicas have been synthesized through dodecylamine, cetiltrimethylamonium bromide (CTAB) and the triblock co-polymer EO20-PO70-EO20 (P123 ¿ Pluronic®) as structure directing agents (sda). The inorganic matrices have been functionalized with silylating agents presenting from one to three nitrogen atoms on their chains. In addition, these silanes reacted with thiocarbamide through a free-solvent step, before the silica formation, by co-condensation process. However the synthetic route for the samples templated by P123 was the post-grafting. For the structures obtained by using dodecylamine, HMS-like, it was observed the structure collapsed after template removal, as shown by IR spectra and XRD patterns, before and after the removal process. These samples presented pore size comprised on mesoporous range, being then investigated for toxic metal removal capacity. For the samples prepared from CTAB and P123, the typical reflections for p6mm group materials, named 2D-hexagonal, were observed, and these samples are analogous to MCM-41 and SBA-15 materials, respectively. All thiocarbamide-modified hybrids were applied to metal ions sorption, being adjusted to Langmuir non-linear fit model. The interactions at the solid/liquid interface were determined through microcalorimetry. The results reveal that the SBA-15-like materials present high removal capacity for Cu, Cd e Pb, due to the post-grafting procedure. The samples obtained through cocondensation route, HMS- and MCM-41-like, presented maximum sorption capacity higher than those results for analogous published materials. With exception of Pb, all calorimetric determinations showed that the interactions between the solids and metal ions are exothermic. Another highlighted feature is about the importance of the entropic term that seems to rule the processes for several cases, due to the ion and surface coordinated water molecules displacement. Thus, all studied systems presented an energetically favorable behavior.
Doutorado
Quimica Inorganica
Doutor em Ciências

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Llopis, Lorente Antoni. "Enzyme-functionalized hybrid mesoporous nanodevices for sensing, controlled release and molecular communication." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/117612.

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[ES] La presente tesis doctoral titulada "Nanodispositivos mesoporosos híbridos funcionalizados con enzimas para detección, liberación controlada y comunicación molecular" se centra en el diseño, preparación, caracterización y evaluación de distintos nanodispositivos híbridos orgánico-inorgánicos utilizando como soporte nanopartículas tipo Janus de oro y sílice mesoporosa, que se equipan con enzimas, especies fluorescentes y puertas moleculares. Como conclusión general, los estudios realizados muestran que la incorporación de enzimas sobre nanopartículas permite introducir funciones de reconocimiento con alta especificidad y diseñar nanodispositivos avanzados para distintas finalidades. La combinación de nanopartículas híbridas con grupos orgánicos como puertas moleculares, efectores enzimáticos y especies cromo- fluorogénicas o fármacos puede resultar muy versátil; y se espera que los resultados obtenidos puedan inspirar el desarrollo de nuevos materiales inteligentes con aplicación en distintas áreas como la nanomedicina y la detección de moléculas de interés.
[CAT] La present tesi doctoral titulada "Nanodispositius mesoporosos híbrids funcionalitzats amb enzims per a detecció, alliberació controlada i comunicació molecular" es centra en el disseny, preparació, caracterització i avaluació de distints nanodispositius híbrids orgànic-inorgànics utilitzant com a suport nanopartícules tipus Janus d'or i sílice mesoporosa, que s'equipen amb enzims, espècies fluorescents i portes moleculars. Com a conclusió general, els estudis realitzats mostren que la incorporació d'enzims sobre nanopartícules permeten introduir funcions de reconeixement amb alta especificitat i dissenyar nanodispositius avançats per a distintes finalitats. La combinació de nanopartícules híbrides amb grups orgànics com portes moleculars, efectors enzimàtics i espècies cromo-fluorogèniques o fàrmacs pot resultar molt versàtil; i s'espera que els resultats obsessos inspiren el desenvolupament de nous materials intel·ligents amb aplicació en distintes àrees com la nanomedicina i la detecció de molècules d'interés.
[EN] This PhD thesis entitled "Enzyme-functionalized hybrid mesoporous nanodevices for sensing, controlled release and molecular communication" is focused on the design, synthesis, characterization and evaluation of several hybrid organic-inorganic nanodevices using Janus gold-mesoporous silica nanoparticles as scaffolds, equipped with enzymes, fluorescent species and molecular gates. In conclusion, these studies show that the incorporation of enzymes on nanoparticles allows to introduce recognition capabilities with high specificity and to design advanced nanodevices for different purposes. The combination of hybrid nanoparticles with organic groups such as molecular gates, enzymatic effectors and chromo-fluorogenic species or drugs can be very versatile; and we hope that the obtained results inspire the development of new smart materials with application in different areas such as nanomedice and sensing.
Llopis Lorente, A. (2019). Enzyme-functionalized hybrid mesoporous nanodevices for sensing, controlled release and molecular communication [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/117612
TESIS

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Chen, Pengkun. "Titania and silica based hybrid porous nanomaterials : from synthesis to applications." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF010/document.

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Mon doctorat se focalise sur la synthèse, la caractérisation et les applications de matériaux poreux à base de silice, dioxyde de titane et zéolite. La silice poreuse, le dioxyde de titane et les zéolites ont été synthétisés en utilisant des méthodologies différentes. Des matériaux de silice fonctionnalisés ont été utilisés pour des applications en adsorption de colorant, ce qui est utile pour le traitement de l'eau. Un nouveau système réticulé et un nouveau dispositif ont été créés pour améliorer la capacité d'adsorption et pour le traitement d’une grande quantité d'eau. En tirant parti des pores, une nouvelle méthode de formation de clusters de Cu (0) a été établie. Les propriétés photophysiques ont été étudiées, en utilisant plusieurs sources de cuivre et différents matériaux poreux. L'utilisation du confinement pour la détection de petites molécules biologiques tels que les neurotransmetteurs a été démontrée. Plusieurs applications ont été développées sur la base de ces récepteurs de neurotransmetteurs artificiels. Un matériau de titane mésoporeux multifonctionnalisé a été utilisé pour les applications en biologie. En comparaison avec la silice, plus couramment utilisée, sa photoactivité pourrait apporter des avantages supplémentaires. Finalement, de nouveaux types de matériaux de type organotitanes hybrides ont été développés, et leurs propriétés photo-catalytiques ont été démontrées
My PhD research focus on the synthesis, characterization and applications of silica, titania and zeolite based porous materials. Porous silica, titania and zeolite have been synthesized using different methodologies. Functionalized silica materials have been used for dye adsorption application which is useful for water treatment. A new cross-linked system and device have been created to enhance the adsorption ability and for large quantity of water treatment. By taking advantage of the pores, new method for Cu(0) cluster formation have been established. The photophysics of the Cu(0) clusters reduced from different copper source in different porous materials has been investigated. The use of the confinement for sensing has been demonstrated for small bio molecules, such as neurotransmitters. Several applications have been developed based on this artificial neurotransmitter receptors. Multi-functionalized mesoporous titania material has been used for bio-applications. Compare to the widely used silica material, its photoactivity could bring extra advantages. Finally, new types of hybrid organotitanium materials have been developed and their photocatalytic properties have been investigated

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Atoini, Youssef. "New luminescent hybrid materials : synthesis and properties." Thesis, Strasbourg, 2017. http://www.theses.fr/2017STRAF004/document.

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L'objectif de cette thèse est la synthèse, la caractérisation et l'étude de complexes métalliquesluminescents, en particulier de Pt (II), leurs propriétés d'agrégation en solution, mais également dansun espace confiné ainsi qu’en surface. L'incorporation de complexes de métaux de transition dans lastructure poreuse, et ainsi que leur dépôt à la surface de nanoparticules et dans un cadre métalloorganique(MOF), par greffage post-synthétique, ont été étudiés. Sont également étudiés lacorrélation entre les propriétés de films d’une série de complexes de Pt(II) avec leur morphologie,leur mobilité électronique et la simulation de leur structure auto-assemblée par diffraction auxrayons-X. Les propriétés de luminescence de complexes amphiphiles de Pt(II) sont améliorées àl’intérieur de nanoparticules de silice mesoporeuse par la création d’un d’espace confiné. Un effetsimilaire est observé par le dépôt de complexes de Pt(II) fonctionnalisés sur une surface denanoparticules d’or. La luminescence d’un cadre organométallique a été modifiée par greffage postsynthétiquede complexes d’Ir(III) et de Pt(II)
The aim of this thesis is the synthesis, characterization and investigation of luminescent metalcomplexes, and in particular of Pt(II) compounds, their aggregation properties in solution but inconfined space as well. The incorporation of transition metal complexes in porous structure, and inparticular in a metal-organic framework (MOF), by post-synthesis grafting, have been investigated.Luminescence properties of amphiphilic Pt(II) complexes were enhanced inside mesoporous silicananoparticles by the creation of a confined space. Similar effect is observed by deposition offunctionalized Pt(II) complexes on gold nanoparticles surface. Luminescence of metal organicframework was tuned by post-synthetic grafting of Ir(III) and Pt(II) complexes

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Book chapters on the topic "Mesoporous hybrid silica"

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Slowing, Igor I., Brian G. Trewyn, and Victor S. Y. Lin. "Nanogated Mesoporous Silica Materials." In The Supramolecular Chemistry of Organic-Inorganic Hybrid Materials, 479–502. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470552704.ch16.

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Fujita, Satoru, Mahendra P. Kapoor, and Shinji Inagaki. "Organic-Inorganic Hybrid Mesoporous Silica." In Nanohybridization of Organic-Inorganic Materials, 141–69. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-92233-9_7.

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Ghaida, Fatima Abi, Sébastien Clément, and Ahmad Mehdi. "Heterogenized Catalysis on Metals Impregnated Mesoporous Silica." In Novel Nanoscale Hybrid Materials, 323–49. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119156253.ch10.

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Pasqua, Luigi, Rosangela Piluso, Ilenia Pelaggi, and Catia Morelli. "Hybrid Mesoporous Silica for Drug Targeting." In Smart Membranes and Sensors, 255–68. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781119028642.ch9.

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Hoffmann, Frank, and Michael Fröba. "Silica-Based Mesoporous Organic-Inorganic Hybrid Materials." In The Supramolecular Chemistry of Organic-Inorganic Hybrid Materials, 37–111. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2010. http://dx.doi.org/10.1002/9780470552704.ch3.

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Yan, Bing. "Photofunctional Rare Earth Hybrid Materials Based on Organically Modified Mesoporous Silica." In Photofunctional Rare Earth Hybrid Materials, 57–82. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-2957-8_3.

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Cheng, Bei, and Peisheng Xu. "Fabrication of Photothermal Stable Gold Nanosphere/Mesoporous Silica Hybrid Nanoparticle Responsive to Near-Infrared Light." In Methods in Molecular Biology, 117–23. New York, NY: Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-6646-2_7.

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Besson, Eric, Ahmad Mehdi, Catherine Réyé, Alain Gibaud, and Robert J. P. Corriu. "Direct synthesis of Mesoporous Hybrid Organic-Inorganic Silica Powders and Thin Films for Potential Non Linear Optic Applications." In Silicon Based Polymers, 223–31. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8528-4_16.

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Kruk, Michal, and Chin Ming Hui. "Block-Copolymer-Templated Synthesis of Ordered Silicas with Closed Mesopores." In Hybrid Nanomaterials, 285–97. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2011. http://dx.doi.org/10.1002/9781118003497.ch11.

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"Hybrid Materials based on Silica Nanostructures for Biomedical Scaffolds (Bone Regeneration) and Drug Delivery." In Materials Research Foundations, 103–20. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901076-4.

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Silica nanoparticles with nanoporous nature are introduced as thermally and chemically stable nanomaterials with controllable porosity and morphology. The nanoparticles can be divided into three groups: microporous, mesoporous, and macroporous based on the porous size. The use of these materials for different applications is associated with their unique properties as disinfectants. This chapter discusses different synthesis methodologies to prepare well-dispersed mesoporous silica nanoparticles (MSNs) and hollow silica nanoparticles (HSNs) with tunable dimensions ranging from a few to hundreds of nanometers of different mesostructures. Several good characteristics of the MSNs, best biocompatibility and low toxicity, are proposed as the basis of the carrier for the controlled release of drugs, genes into living cells and bone regeneration.

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Conference papers on the topic "Mesoporous hybrid silica"

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Enami, Yasufumi, Jingdong Luo, and Alex K.-Y. Jen. "Hybrid Electro-Optic Polymer/TiO2 Multilayer Waveguide Modulators on Mesoporous Sol-Gel Silica Cladding." In Integrated Photonics Research, Silicon and Nanophotonics. Washington, D.C.: OSA, 2014. http://dx.doi.org/10.1364/iprsn.2014.jt3a.23.

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Palaniappan, A., Xiaodi Su, Francis, and E. H. Tay. "Quartz sensor array using mesoporous silica hybrids for gas sensing applications." In 2005 IEEE Sensors. IEEE, 2005. http://dx.doi.org/10.1109/icsens.2005.1597948.

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Xu, Jiaqiang, Yongheng Zhu, Zhixuan Cheng, and Q. Zheng. "2.4.4 Quartz Crystal Microbalance Sensor for Organic Vapor Detection Based on Silica-Based Mesoporous Organic-Inorganic Hybrids." In 14th International Meeting on Chemical Sensors - IMCS 2012. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2012. http://dx.doi.org/10.5162/imcs2012/2.4.4.

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Reports on the topic "Mesoporous hybrid silica"

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Lai, Peng. Mesoporous Silicia Nanowires by Space-Confined Organic-Inorganic Hybrid Self-Assembly. Office of Scientific and Technical Information (OSTI), October 2007. http://dx.doi.org/10.2172/990221.

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Inga Musselman, Jr Kenneth Balkus, and John Ferraris. Mixed-Matric Membranes for CO2 and H2 Gas Separations Using Metal-Organic Framework and Mesoporus Hybrid Silicas. Office of Scientific and Technical Information (OSTI), January 2009. http://dx.doi.org/10.2172/945031.

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