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Fox, Ryan J. (author), Hegde, Maruti (author), Cole, Daniel P. (author), Moore, Robert B. (author), Picken, S.J. (author), Dingemans, T.J. (author)We report on the morphology and mechanical properties of nanocomposite films derived from aqueous, hybrid liquid crystalline mixtures of rodlike aggregates of a sulfonated, all-aromatic polyamide, poly(2,2′-disulfonyl-4,4′-benzidine terephthalamide) (PBDT), and graphene oxide (GO) platelets. An isothermal step at 200 °C facilitates in situ...journal article 2022
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Madzarevic, Z. (author), Seoane, Beatriz (author), Gascon, Jorge (author), Hegde, M. (author), Dingemans, T.J. (author)A novel series membranes based on non-linear all-aromatic polyimides (PIs) was investigated with the aim to understand how the PI backbone geometry and local electrostatics govern gas transport and the ability to separate CO<sub>2</sub>/CH<sub>4</sub> mixtures. Non-linear 3-ring aromatic diamines, with exocyclic bond angles varying between...journal article 2022
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Hegde, M. (author), Yang, Lin (author), Vita, Francesco (author), van de Watering, R. (author), Norder, B. (author), Lafont, U.L. (author), Francescangeli, Oriano (author), Picken, S.J. (author), Dingemans, T.J. (author)Combining polymers with small amounts of stiff carbon-based nanofillers such as graphene or graphene oxide is expected to yield low-density nanocomposites with exceptional mechanical properties. However, such nanocomposites have remained elusive because of incompatibilities between fillers and polymers that are further compounded by...journal article 2020
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Fox, Ryan J. (author), Forest, M. Gregory (author), Picken, S.J. (author), Dingemans, Theo J. (author)We report on the shear rheology of liquid crystalline solutions composed of charged, rodlike polymers that form supramolecular assemblies dispersed in water. Under steady shear, we observe shear thickening behavior, followed by a hesitation in the viscosity accompanied by an extremely narrow range of negative first normal stress difference....journal article 2020
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Dingemans, Milou M.L. (author), Smeets, Patrick W.M.H. (author), Medema, G.J. (author), Frijns, Jos (author), Raat, Klaasjan J. (author), van Wezel, Annemarie P. (author), Bartholomeus, Ruud P. (author)Freshwater is a precious resource, and shortages can lead to water stress, impacting agriculture, industry, and other sectors. Wastewater reuse is increasingly considered as an opportunity to meet the freshwater demand. Legislative frameworks are under development to support the responsible reuse of wastewater, i.e., to balance benefits and...review 2020
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Reyes, Larry Q. (author), Dao, Buu (author), Vogel, W. (author), Bijleveld, J.C. (author), Tucker, Sam (author), Christensen, Steve (author), Wiggins, Jeffrey (author), Dingemans, T.J. (author), Varley, Russell J. (author)Isomeric tri-aryl ketone amines, 1,3-bis(3-aminobenzoyl)benzene (133 BABB), 1,3-bis(4-aminobenzoyl)benzene (134 BABB), and 1,4-bis(4-aminobenzoyl)benzene (144 BABB) are synthesized and cured with diglycidyl ether of bisphenol A and diglycidyl ether of bisphenol F in this work. Differential scanning calorimetry and near-infrared spectroscopy...journal article 2019
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Wang, Ying (author), He, Yadong (author), Yu, Zhou (author), Gao, J. (author), ten Brinck, Stephanie (author), Hegde, M. (author), Moore, Robert B. (author), Ensing, Bernd (author), Dingemans, T.J. (author)The ubiquitous biomacromolecule DNA has an axial rigidity persistence length of ~50 nm, driven by its elegant double helical structure. While double and multiple helix structures appear widely in nature, only rarely are these found in synthetic non-chiral macromolecules. Here we report a double helical conformation in the densely charged...journal article 2019
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Maaskant, Evelien (author), Vogel, W. (author), Dingemans, T.J. (author), Benes, Nieck E. (author)A star-shaped trifunctional acyl chloride bearing ether linkages was synthesized as an alternative to the commonly used trimesoyl chloride (TMC) in the preparation of polyamide thin film composite membranes (TFC). Although this star-shaped acyl chloride has the same functionality as TMC, it is larger in size and its acyl chloride groups are...journal article 2018
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Dingemans, LM (author), Papadakis, V. (author), Liu, P. (author), Adam, A.J.L. (author), Groves, R.M. (author)Background<br/>Hyperspectral imaging is a technique that enables the mapping of spectral signatures across a surface. It is most commonly used for surface chemical mapping in fields as diverse as satellite remote sensing, biomedical imaging and heritage science. Existing models, such as the Kubelka-Munk theory and the Lambert-Beer law also...journal article 2017
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Resel, Roland (author), Bainschab, Markus (author), Pichler, Alexander (author), Dingemans, T.J. (author), Simbrunner, Clemens (author), Stangl, Julian (author), Salzmann, Ingo (author)Dynamical scattering effects are observed in grazing-incidence X-ray diffraction experiments using an organic thin film of 2,2′:6′,2′′-ternaphthalene grown on oxidized silicon as substrate. Here, a splitting of all Bragg peaks in the out-of-plane direction (z-direction) has been observed, the magnitude of which depends both on the incidence...journal article 2016
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Vita, F. (author), Hegde, M. (author), Portale, G. (author), Bras, W. (author), Ferrero, C. (author), Samulski, E.T. (author), Francescangeli, O. (author), Dingemans, T. (author)We report the structural characterization of the nematic phase of 2,6-biphenyl naphthalene (PPNPP). This lath-like all-aromatic mesogen provides a valuable benchmark for classical theories of nematic order. PPNPP exhibits a very high temperature nematic phase (417–489 °C) above an enantiotropic smectic A phase. X-ray diffraction reveals a...journal article 2016
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Dingemans, T.J. (author), Petrus, M.L. (author)The present invention is in the field of a small azomethine molecule having photovoltaic characteristics, a method of synthesizing said molecule, use of said molecule in a photovoltaic device, a solar cell comprising said molecule, and a film comprising said molecule. The present molecules may find application in the field of organic solar cells.patent 2015
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Dingemans, L.M. (author), Papadakis, V. (author), Liu, P. (author), Adam, A.J.L. (author), Groves, R.M. (author)Optical coherence tomography (OCT) is a contactless and non-destructive testing (NDT) technique based on lowcoherence interferometry. It has recently become a popular NDT-tool for evaluating cultural heritage. In this study, protective coatings on wood and their penetration into the wood structure were measured with a customized infrared fiber...conference paper 2015
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Petrus, M.L. (author), Bein, T. (author), Dingemans, T.J. (author), Docampo, P. (author)Most hole transporting materials (HTMs) prepared for perovskite solar cell applications are synthesized via cross-coupling reactions that require expensive transition metal catalysts, inert reaction conditions and extensive product purification; making large-scale production cost-prohibitive. Here, we describe the synthesis of a simple...journal article 2015
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Dingemans, T.J. (author)The invention is directed to a polymeric composition comprising a first polymer (in particular HPP) and a liquid crystal thermoset (LCT) network that interpenetrates said first polymer, which LCT network comprises LCT oligomers that are at least partly polymerized, as well as to a method for preparing such. The polymeric composition of the...patent 2014
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Petrus, M.L. (author), Bouwer, R.K.M. (author), Lafont, U. (author), Athanasopoulos, S. (author), Greenham, N.C. (author), Dingemans, T.J. (author)Conjugated small-molecule azomethines for photovoltaic applications were prepared via Schiff base condensation chemistry. Bulk heterojunction (BHJ) devices exhibit efficiencies of 1.2% with MoOx as the hole-transporting layer. The versatility and simplicity of the chemistry is illustrated by preparing a photovoltaic device directly from the...journal article 2014
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Yang, J. (author), Lutz, M. (author), Grzech, A. (author), Mulder, F.M. (author), Dingemans, T.J. (author)Self-assembled Cu-based coordination polymers derived from thiophene-2,5-dicarboxylic acid (Cu-TDC) and furan-2,5-dicarboxylic acid (Cu-FDC) were synthesized via a solvothermal method and their H2 adsorption behaviour was investigated and contrasted with isophthalic acid (Cu-m-BDC) and terephthalic acid (Cu-BDC) derivatives. Both heterocyclic...journal article 2014
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Simbrunner, C. (author), Schwabegger, G. (author), Resel, R. (author), Dingemans, T.J. (author), Sitter, H. (author)The morphology and structure of 2,2':6',2?-ternaphthalene (NNN) deposited on muscovite mica(001) substrates was investigated by scanning force microscopy (SFM) and specular X-ray diffraction measurements. Consistently, both methods reveal the coexistence of needle-like structures with a {111} contact plane and {001} orientated island-like...journal article 2014
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Petrus, M.L. (author), Bouwer, R.K.M. (author), Lafont, U. (author), Murthy, D.H.K. (author), Kist, R.J.P. (author), Böhm, M.L. (author), Olivier, Y. (author), Savenije, T.J. (author), Siebbeles, L.D.A. (author), Greenham, N.C. (author), Dingemans, T.J. (author)Three conjugated triphenylamine-based poly(azomethine)s were prepared via well-known polycondensation chemistry using cheap and readily available starting materials and the results were contrasted with rrP3HT. Three functionalized diaminetriphenylamines (TPA(X), X ¼ –H, –OMe, –CN) were polymerized in a simple one-step process with 2,3...journal article 2013
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Van den Ende, D. (author), Almeida, P.M.R. (author), Dingemans, T.J. (author), Van der Zwaag, S. (author)The invention relates to a load sensor comprising a polymer matrix and a piezo-ceramic material such as PZT, em not bedded in the polymer matrix, which together form a compos not ite, wherein the polymer matrix is a liquid crystalline resin, and wherein the piezo-ceramic material is a PZT powder forming 30-60% by volume of the composite, and...patent 2007
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