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5. Single-template periodic mesoporous organosilica with organized bimodal mesoporosity

Author

Wong Chi Man, M., Laird, M., Carcel, C., Oliviero, E., Toquer, Guillaume, Trens, P., Bartlett, J.R., Wong, M, Man, Chi, Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM ICMMM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC), Nanomatériaux pour l'Energie et le Recyclage (LNER), Institut de Chimie Séparative de Marcoule (ICSM - UMR 5257), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Western Sydney University, Université Montpellier 1 (UM1)-Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université de Montpellier (UM), Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Materials science, Diffusion, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, Micelle, PMOS logic, chemistry.chemical_compound, Dual porosity, [CHIM]Chemical Sciences, General Materials Science, Porosity, ComputingMilieux_MISCELLANEOUS, Condensation, [CHIM.MATE]Chemical Sciences/Material chemistry, General Chemistry, Poloxamer, Bimodal porosity, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, Mesoporous organosilica, Chemical engineering, chemistry, Mechanics of Materials, Triethoxysilane, Periodic Mesoporous Organosilica, 0210 nano-technology
Abstract

Periodic mesoporous organosilicas (PMOs) are obtained by the hydrolysis-condensation of organobridged triethoxysilane precursors in the presence of surfactants as structure-directing agents (SDAs). After removal of the SDAs, the resulting materials usually exhibit monomodal, well-organized mesoporosity, with the size of the pores being controlled by the SDA. However, despite the potential technological applications of such materials with well-organized bimodal porosity, to the best of our knowledge, PMOs exhibiting two distinct types of ordered mesoporosity have barely been described. Herein, we describe a simple approach for modulating the dimensions of ordered monomodal 2D hexagonal and bimodal porosity in PMOs synthesized from 1,4-bis(triethoxysilyl)benzene (BTEB) and Pluronic P123 under acidic conditions, by varying the addition sequence of reactants. The approach employs a single SDA without degradation of the BTEB precursor. Reaction conditions leading to the formation of monomodal and bimodal porosity within the templated PMOs are identified. Our approach exploits the competition between the rates of (a) BTEB hydrolysis/condensation; and (b) diffusion, solubilization and partitioning of the unhydrolyzed and hydrolyzed precursor within the micelles. A mechanism describing the evolution of porosity within this system is proposed.

Published
2020
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13. The Structure of 1 Maccabees

Author

Bartlett, J.R.

Subjects
The Structure of 1 Maccabees (Book), Books -- Book reviews, Philosophy and religion
Published
2001

21. Linkage analysis of endogenous viral element 1, blue eggshell, and pea comb loci in chickens

Author

Bartlett, J.R., Jones, C.P., and Smith, E.J.

Subjects
Linkage (Genetics) -- Analysis, Chromosome mapping -- Research, Biological sciences
Abstract

The linkage analysis of pea comb (P), endogenous viral element (ev1), and blue eggshell loci (O) in chickens indicates that the three loci are placed in the order, centromere, P, ev1, and O on chromosome 1. The map distance between P and ev1 is between 2.5 to 5.7 cM in males and that between ev1 and O varies from 0.0 to 5.5 cM with an average of 4.0 cM. The average map distance between P and O loci is 4.1 cM. The analysis suggests that ev1 is on the shorter arm of chromosome 1 and is associated with the P and O loci.

Published
1996

25. Maccabees

Author

Bartlett, J.R.

Subjects
Maccabees (Book) -- Book reviews, Books -- Book reviews, Philosophy and religion
Published
2007

27. 4 Maccabees

Author

Bartlett, J.R.

Subjects
4 Maccabees (Book), Books -- Book reviews, Philosophy and religion
Published
2000

32. Low-Temperature Bonding of Ceramics by Sol-Gel Processing

Author

Barbé, C.J, primary, Cassidy, D.J., additional, Triani, G., additional, Latella, B.A., additional, Mitchell, D.R.M., additional, Day, A., additional, Short, K., additional, Bartlett, J.R., additional, Woolfrey, J.L., additional, and Collins, G.A., additional

Published
1999
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36. Book Reviews

Author

Provan, Iain, primary, Coggins, Richard, additional, Snaith, John, additional, Carroll, Robert P., additional, Weeks, Stuart, additional, Bartlett, J.R., additional, Moberly, Walter, additional, Clark, Neville, additional, Lunt, Ronald, additional, Edwards, Ruth B., additional, Davies, Philip R., additional, Alexander, Loveday, additional, Proctor, John, additional, Court, John M., additional, Mason, Kenneth, additional, Harrison, Carol, additional, Mellor, E.B., additional, and Wilkinson, John, additional

Published
1994
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47. Effects of Different Levels of Zinc on the Performance and Immunocompetence of Broilers Under Heat Stress.

Author

Bartlett, J.R. and Smith, M.O.

Subjects
*MINERALS in animal nutrition, *IMMUNOLOGY, *BROILER chickens
Abstract

Examines the effects of zinc on the performance and immunocompetence of broilers under heat stress. Subject selection and diet composition; Evaluations on cell-mediated immunity, abdominal exudate cells and microphage culture; Growth performance and lymphoid organ weight evaluations.

Published
2003
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48. Evaluating cost-effectiveness of diagnostic equipment: the brain scanner case.

Author

Bartlett, J.R., Neil-Dwyer, G., Banham, J.M.M., and Cruickshank, D.G.

Subjects
*SCANNING systems, *CEREBROVASCULAR disease
Abstract

Evaluates the cost-effectiveness of high-technology diagnostic equipment using the computerized axial tomography (CAT) scanning as a model. Reduction of the role of angiography in investigating intracranial disease; Centralization of neuroradiological services; Pattern of demand for CAT scanning.

Published
1978
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