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2,447 results on '"Meijer, E. W."'

106. Multicomponent host-guest chemistry of carboxylic acid and phosphonic acid based guests with dendritic hosts: An NMR study

Author

Broeren, Maarten A. C., Meijer, E. W., de Waal, Bas F. M., van Genederen, Marcel H. P., Sanders, H. M. H. F., and Fytas, George

Subjects
Dendrimers -- Research, Phosphoric acid -- Chemical properties, Nuclear magnetic resonance spectroscopy -- Usage, Carboxylic acids -- Chemical properties, Chemistry
Abstract

A new methodology is introduced to get insights in the binding of carboxylic and phosphoric acid type guest molecules to dendrimers by making use of (super 13)C NMR and (super 31)P NMR. The method is applicable for any type of guest and host in chloroform and gives information about binding strength, binding stoichiometry and binding dynamics.

Published
2005

110. Alternating oligo(p-phenylene vinylene)-perylene bisimide copolymers: synthesis, photophysics, and photovoltaic properties of a new class of donor-acceptor materials

Author

Neuteboom, Edda E., Meskes, Stefan C. J., Hal, Paul A. van, Duren, Jeoroen K. J., Meijer, E. W., Janssen, Rene A. J., Dupin, Helene, Pourtois, Geoffrey, Cornil, J.erome, Lazzaroni, Roberto, Bredas, Jean-Luc, and Belijonne, David

Subjects
Chromophores -- Chemical properties, Photoluminescence -- Research, Chemistry
Abstract

Synthesis of two copolymers consisting of alternating oligo(p-phenylene vinylene) (OPV) donor and perylene bisimide (PERY) acceptor chromophores was done using a Suzuki polycondensation reaction. Photoinduced singlet energy transfer and photoinduced charge separation in these was studied in solution and in the solid state through photoluminescence and femtosecond pump-probe spectroscopy.

Published
2003

114. Supramolecular polymers

Author

Brunsveld, L., Folmer, B. J. B., Meijer, E. W., and Sijbesma, R. P.

Subjects
Chemical research -- Analysis, Polymers -- Physiological aspects, Molecules -- Physiological aspects, Hydrogen bonding -- Physiological aspects, Aromatic compounds -- Physiological aspects, Chemistry
Abstract

The authors review the publications on the supramolecular polymers. The topics of interest include general aspects of the supramolecular polymers, supramolecular polymers based on hydrogen bonding and arene-arene interactions.

Published
2001

115. Interchromophoric coupling in oligo(p-phenylenevinylene)-substituted poly(propyleneimine) dendrimers

Author

Meskers, Stefan C. J., Bender, Markus, Hubner, Jens, Romanovskii, Yu. V., Oestreich, Michael, Schenning, Albertus P. H. J., Meijer, E. W., and Bassler, Heinz

Subjects
Chemistry, Physical and theoretical -- Research, Photochemical research -- Analysis, Fluorescence -- Physiological aspects, Emission spectroscopy -- Analysis, Solution (Chemistry) -- Physiological aspects, Polymers -- Physiological aspects, Chemicals, plastics and rubber industries
Published
2001

116. Synthesis and properties of new thiourea-functionalized poly(propylene imine) dendrimers and their role as hosts for urea functionalized guests

Author

Boas, Ulrik, Karlsson, Annika J., Waal, B. F. M. de, and Meijer, E. W.

Subjects
Chemistry, Organic -- Research, Propylene -- Physiological aspects, Urea -- Physiological aspects, Amines -- Physiological aspects, Nuclear magnetic resonance spectroscopy -- Usage, Solvents -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the thiourea dendrimers. The synthesis of these dendrimers has been carried out via the amino-terminated DAB dendrimer and the adamantyl and palmityl isothiocyanates and the properties of the thiourea dendrimers have been investigated by IR and (super)1 H NMR, relaxation measurements included.

Published
2001

128. Supramolecular Double Helices from Small C3-Symmetrical Molecules Aggregated in Water

Author

Lafleur, René P. M., primary, Herziger, Svenja, additional, Schoenmakers, Sandra M. C., additional, Keizer, Arthur D. A., additional, Jahzerah, Jahaziel, additional, Thota, Bala N. S., additional, Su, Lu, additional, Bomans, Paul H. H., additional, Sommerdijk, Nico A. J. M., additional, Palmans, Anja R. A., additional, Haag, Rainer, additional, Friedrich, Heiner, additional, Böttcher, Christoph, additional, and Meijer, E. W., additional

Published
2020
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144. Helical self-assembled polymers from cooperative stacking of hydrogen-bonded pairs

Author

Hirschberg, J. H. K. Ky, Brunsveld, Luc, Ramzi, Aissa, Vekemans, Jef A. J. M., Sijbesma, Rint P., and Meijer, E. W.

Subjects
Environmental issues, Science and technology, Zoology and wildlife conservation
Abstract

Author(s): J. H. K. Ky Hirschberg; Luc Brunsveld; Aissa Ramzi; Jef A. J. M. Vekemans; Rint P. Sijbesma; E. W. Meijer (corresponding author) The double helix of DNA epitomizes this [...]

Published
2000
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147. Expanding quasiperiodicity in soft matter: Supramolecular decagonal quasicrystals by binary giant molecule blends.

Author

Yuchu Liu, Tong Liu, Xiao-Yun Yan, Qing-Yun Guo, Huanyu Lei, Zongwu Huang, Rui Zhang, Yu Wang, Jing Wang, Feng Liu, Feng-Gang Bian, Meijer, E. W., Takuzo Aida, Mingjun Huang, and Cheng, Stephen Z. D.

Subjects
QUASICRYSTALS, CONDENSED matter, ALLOYS, SUPERLATTICES, MOLECULES
Abstract

The quasiperiodic structures in metal alloys have been known to depend on the existence of icosahedral order in the melt. Among different phases observed in intermetallics, decagonal quasicrystal (DQC) structures have been identified in many glass-forming alloys yet remain inaccessible in bulk-state condensed soft matters. Via annealing the mixture of two giant molecules, the binary system assemblies into an axial DQC superlattice, which is identified comprehensively with meso-atomic accuracy. Analysis indicates that the DQC superlattice is composed of mesoatoms with an unusually broad volume distribution. The interplays of submesoatomic (molecular) and mesoatomic (supramolecular) local packings are found to play a crucial role in not only the formation of the metastable DQC superlattice but also its transition to dodecagonal quasicrystal and Frank-Kasper s superlattices. [ABSTRACT FROM AUTHOR]

Published
2022
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