Search

Your search keyword '"Schenning, Albertus P. H. J."' showing total 812 results
Start Over Author "Schenning, Albertus P. H. J."
812 results on '"Schenning, Albertus P. H. J."'

1. Scalable Photochromic Film for Solar Heat and Daylight Management

Author

Meng, Weihao, primary, Kragt, Augustinus J. J., additional, Gao, Yingtao, additional, Brembilla, Eleonora, additional, Hu, Xiaowen, additional, van der Burgt, Julia S., additional, Schenning, Albertus P. H. J., additional, Klein, Tillmann, additional, Zhou, Guofu, additional, van den Ham, Eric R., additional, Tan, Longfei, additional, Li, Laifeng, additional, Wang, Jingxia, additional, and Jiang, Lei, additional

Published
2023
Full Text
View/download PDF

3. Mesoscopic order and the dimentionality of long-range resonance energy transfer in supramolecular semiconductors

Author

Daniel, Clement, Makereel, Francois, Herz, Laura M., Hoeben, Freek J. M., Jonkheijm, Pascal, Schenning, Albertus P. H. J., Meijer, E. W., and Silva, Carlos

Subjects
Condensed Matter - Materials Science
Abstract

We present time-resolved photoluminescence measurements on two series of oligo-p-phenylenevinylene materials that self-assemble into supramolecular nanostructures with thermotropic reversibility in dodecane. One set of derivatives form chiral, helical stacks while the second set form less organised, frustrated stacks. Here we study the effects of supramolecular organisation on the resonance energy transfer rates. We measure these rates in nanoassemblies formed with mixed blends of oligomers and compare them with the rates predicted by Foerster theory. Our results and analysis show that control of supramolecular order in the nanometre lengthscale has a dominant effect on the efficiency and dimentionality of resonance energy transfer., Comment: 17 Pages, 5 Figures, Submitted to J. Chem. Phys

Published
2007
Full Text
View/download PDF

4. Exciton bimolecular annihilation dynamics in supramolecular nanostructures of conjugated oligomers

Author

Daniel, Clément, Herz, Laura M., Silva, Carlos, Hoeben, Freek J. M., Jonkheijm, Pascal, Schenning, Albertus P. H. J., and Meijer, E. W.

Subjects
Condensed Matter - Soft Condensed Matter, Condensed Matter - Materials Science
Abstract

We present femtosecond transient absorption measurements on $\pi$-conjugated supramolecular assemblies in a high pump fluence regime. Oligo(\emph{p}-phenylenevinylene) monofunctionalized with ureido-\emph{s}-triazine (MOPV) self-assembles into chiral stacks in dodecane solution below 75$^{\circ}$C at a concentration of $4\times 10^{-4}$ M. We observe exciton bimolecular annihilation in MOPV stacks at high excitation fluence, indicated by the fluence-dependent decay of $1^1$B$_{u}$-exciton spectral signatures, and by the sub-linear fluence dependence of time- and wavelength-integrated photoluminescence (PL) intensity. These two characteristics are much less pronounced in MOPV solution where the phase equilibrium is shifted significantly away from supramolecular assembly, slightly below the transition temperature. A mesoscopic rate-equation model is applied to extract the bimolecular annihilation rate constant from the excitation fluence dependence of transient absorption and PL signals. The results demonstrate that the bimolecular annihilation rate is very high with a square-root dependence in time. The exciton annihilation results from a combination of fast exciton diffusion and resonance energy transfer. The supramolecular nanostructures studied here have electronic properties that are intermediate between molecular aggregates and polymeric semiconductors.

Published
2003
Full Text
View/download PDF

5. Hydrogen Bonding in Supramolecular Nanoporous Materials

Author

van Kuringen, Huub P. C., Schenning, Albertus P. H. J., Landfester, Katharina, Series editor, Salzer, Reiner, Series editor, Carpenter, Barry, Series editor, Ceroni, Paola, Series editor, Mahlke, Claudia, Series editor, Leszczynski, Jerzy, Series editor, Kirchner, Barbara, Series editor, Luh, Tien-Yau, Series editor, Polfer, Nicolas C., Series editor, Li, Zhan-Ting, editor, and Wu, Li-Zhu, editor

Published
2015
Full Text
View/download PDF

12. Exciton diffusion dynamics in an organic semiconductor nanostructure

Author

Daniel, Clément, Herz, Laura M., Westenhoff, Sebastian, Makereel, François, Beljonne, David, Hoeben, Freek J. M., Jonkheijm, Pascal, Schenning, Albertus P. H. J., Meijer, E. W., Silva, Carlos, Castleman, A. W., Jr., editor, Toennies, J.P., editor, Zinth, W., editor, Kobayashi, Takayoshi, editor, Okada, Tadashi, editor, Kobayashi, Tetsuro, editor, Nelson, Keith A., editor, and De Silvestri, Sandro, editor

Published
2005
Full Text
View/download PDF

15. One‐Pot Synthesis of Melt‐Processable Supramolecular Soft Actuators.

Author

Lugger, Sean J. D., Mulder, Dirk J., and Schenning, Albertus P. H. J.

Subjects
ACTUATORS, LIQUID crystals, ADDITION reactions, WEIGHT lifting, SUPRAMOLECULAR polymers
Abstract

The application of reprocessable and reprogrammable soft actuators is limited by the synthetic strategies, 3D‐shaping capabilities, and small deformations. In this work, melt‐processable supramolecular soft actuators based on segmented copolymers containing thiourethane and liquid crystal segments have been prepared via sequential thiol addition reactions in a one‐pot approach using commercially available building blocks. The actuators demonstrated immediate, reversible response and weightlifting capabilities with large deformations up to 32 %. Through exploiting the supramolecular cross‐links, the material could be recycled and reprogrammed into 3D actuators and welded into an actuator assembly with different deformation modes. Our work offers a one‐pot synthesis and straightforward melt‐processable approach to prepare supramolecular soft actuators with large deformations that can be reprocessed and reprogrammed into arbitrary 3D shapes. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

16. 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

17. Synthesis, aggregation, and binding behavior of synthetic amphiphilic receptors

Author

Schenning, Albertus P. H. J., Escuder, Beatriu, Nunen, Johanna L. M. van, Bruin, Bas de, Lowik, Dennis W. P. M., Rowan, Alan E., Gaast, Sjerry J. van der, Feiters, Martinus C., and Nolte, Roeland J. M.

Subjects
Chemistry, Organic -- Research, Alkali metals -- Physiological aspects, Molecules -- Research, Water -- Physiological aspects, Cell membranes -- Physiological aspects, Biological sciences, Chemistry
Abstract

Research has been conducted on the ampliphilic bowl-shaped receptor molecules. The synthesis of these molecules has been carried out and the results indicate that these ampliphiles can form different types of aggregates upon dispersal in water and are capable of binding alkali metals.

Published
2001

18. Stable and scalable smart window based on polymer stabilized liquid crystals

Author

Hu, Xiaowen, primary, Zhang, Xinmin, additional, Yang, Wenmin, additional, Jiang, Xiao‐Fang, additional, Jiang, Xinshuai, additional, Haan, Laurens T., additional, Yuan, Dong, additional, Zhao, Wei, additional, Zheng, Nan, additional, Jin, Mingliang, additional, Shui, Lingling, additional, Schenning, Albertus P. H. J., additional, and Zhou, Guofu, additional

Published
2020
Full Text
View/download PDF

28. Regulating the modulus of a chiral liquid crystal polymer network by light† †Electronic supplementary information (ESI) available. See DOI: 10.1039/c6sm00114a Click here for additional data file. Click here for additional data file

Author

Kumar, Kamlesh, Schenning, Albertus P. H. J., Broer, Dirk J., and Liu, Danqing

Subjects
Condensed Matter::Soft Condensed Matter, Chemistry, Microscopy, Polymers, Ultraviolet Rays, Transition Temperature, Stereoisomerism, Condensed Matter::Disordered Systems and Neural Networks, Azo Compounds, Phase Transition
Abstract

We provide a methodology to change the state of matter from hard and glassy to soft and rubbery by light., We report a novel way to modulate the elastic modulus of azobenzene containing liquid crystal networks (LCNs) by exposure to light. The elastic modulus can cycle between different levels by controlling the illumination conditions. Exposing the polymer network to UV light near the trans absorption band of azobenzene gives a small reduction of the glass transition temperature thereby lowering the modulus. The addition of blue light addressing the cis absorption band surprisingly amplifies this effect. The continuous oscillatory effects of the trans-to-cis isomerization of the azobenzene overrule the overall net cis conversion. The influence on the chain dynamics of the network is demonstrated by dynamic mechanical thermal analysis which shows a large shift of the glass transition temperature and a modulus decrease by more than two orders of magnitude. The initial high modulus and the glassy state are recovered within a minute in the dark by switching off the light sources, despite the observation that azobenzene is still predominantly in its cis state. Based on these new findings, we are able to create a shape memory polymer LCN film at room temperature using light.

Published
2016

29. Light-responsive Materials for Microfluidic Applications

Author

Ter Schiphorst, Jeroen, Sáez Castaño, Janire, Diamond, Dermot, Benito López, Fernando, and Schenning, Albertus P. H. J.

Subjects
stimuli responsive materials, light, microfluídics
Abstract

While the microfluidic device itself may be small, often the equipment required to control fluidics in thechip unit is large e.g. pumps, valves and mixing units, which can severely limit practical use and functionalscalability. In addition, components associated with fluidic control of the device, more specifically thevalves and pumps, contribute significantly to the overall unit cost. Here we sketch the problem of a gap between high end accurate, but expensive sensor platforms, versus less accurate, but widely employable hand-held low-cost devices. Recent research has shown that the integration of light-responsive materials within microfluidic devices can provide the function of expensive fluidic components, and potentially enable sophisticated measurements to be made using much less expensive equipment. An overview of the most recent developments will be presented for valves, mixers, transport and sample handling inside microfluidic devices. The authors would like to acknowledge the many discussions and contributions with all of our former and current colleagues. Their names are given in the references cited. A special word of thanks is expressed to all “NAPES” members for many inspiring discussions and fruitful collaborations. The authors acknowledge funding for this research under the European Union's Seventh Framework Programme (FP7) for research, technological development and demonstration, through the NAPES project grant agreement no. 604241. F. B.-L. acknowledges funding support from the Ramón y Cajal Programme (Ministerio de Economía y Competitividad), Spain as well as Gobierno Vasco, Dpto. Industria, Innovacion, Comercio y Turismo under ELKARTEK 2016 with Grant No. KK-2015/0000088 and Gobierno de España, Ministerio de Economía y Competitividad, with Grant No. BIO2016-80417- P. We also acknowledge support from Science Foundation Ireland under the INSIGHT Centre initiative (SFI/12/RC/2289) and Enterprise Ireland (IP 2016 0502).

Published
2018

39. Configurable Multi‐Stable Surface Topographies: Re‐ and Preconfigurable Multistable Visible Light Responsive Surface Topographies (Small 50/2018)

Author

Hendrikx, Matthew, primary, ter Schiphorst, Jeroen, additional, van Heeswijk, Ellen P. A., additional, Koçer, Gülistan, additional, Knie, Christopher, additional, Bléger, David, additional, Hecht, Stefan, additional, Jonkheijm, Pascal, additional, Broer, Dirk J., additional, and Schenning, Albertus P. H. J., additional

Published
2018
Full Text
View/download PDF

43. Nanohybrid Materials with Tunable Birefringence via Cation Exchange in Polymer Films.

Author

Oosterlaken, Bernette M., Xu, Yifei, van Rijt, Mark M. J., Pilz da Cunha, Marina, Timmermans, Gilles H., Debije, Michael G., Friedrich, Heiner, Schenning, Albertus P. H. J., and Sommerdijk, Nico A. J. M.

Subjects
POLYMER films, POLYMER liquid crystals, LIQUID crystal films, SMECTIC liquid crystals, OPTICAL devices, BIREFRINGENCE, CATIONS
Abstract

In this work, a nanohybrid material based on a freestanding polymeric liquid crystal network capable of postmodification via cation exchange to tune birefringence is proposed. The smectic liquid crystal films can be infiltrated with a variety of cations, thereby changing the refractive indices (ne and no) and the effective birefringence (Δn) of the nanohybrid material, with reversible cation infiltration occurring within minutes. Birefringence could be tuned between values of 0.06 and 0.19, depending on the cation infiltrated into the network. Upon infiltration, a decrease in the smectic layer spacing is found with layer contraction independent of the induced change in birefringence. Potential applications are in the field of specialty optical devices, such as flexible, retunable reflective filters. [ABSTRACT FROM AUTHOR]

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results