17 Works

Label-free continuous enzyme assays with macrocycle-fluorescent dye complexes

Andreas Hennig, Hüseyin Bakirci & Werner M Nau

Realisation of solid-state electrochromic devices based on gel electrolyte

Kah-Yoong Chan, Benedict Wen Cheun Au, Mohd Zainizan Sahdan, Abraham Shiau-Iun Chong & Dietmar Knipp
Background: Since the last decade, there has been much interest in solid polymer electrolyte (SPE) to address the issues of electrolyte leakage and evaporation in electrochromic devices (ECD). ECD is a state-of-the-art technology having the ability to change from transparent state to opaque state under the influence of a small applied voltage for energy saving applications. Methods: In this work, tungsten oxide (WO3) films were fabricated via the sol-gel spin-coating method. Subsequently, ECDs were assembled...

Data from: A mathematical model of cocoa bean fermentation

Mauricio Moreno-Zambrano, Sergio Grimbs, Matthias S. Ullrich & Marc-Thorsten Hütt
Cocoa bean fermentation relies on the sequential activation of several microbial populations, triggering a temporal pattern of biochemical transformations. Understanding this complex process is of tremendous importance as it is known to form the precursors of the resulting chocolate's flavor and taste. At the same time, cocoa bean fermentation is one of the least controlled processes in the food industry. Here, a quantitative model of cocoa bean fermentation is constructed based on available microbiological and...

Data from: Identification of habitat-specific biomes of aquatic fungal communities using a comprehensive nearly full-length 18S rRNA dataset enriched with contextual data

Katrin Panzer, Pelin Yilmaz, Michael Weiß, Lothar Reich, Michael Richter, Jutta Wiese, Rolf Schmaljohann, Antje Labes, Johannes F. Imhoff, Frank Oliver Glöckner & Marlis Reich
Molecular diversity surveys have demonstrated that aquatic fungi are highly diverse, and that they play fundamental ecological roles in aquatic systems. Unfortunately, comparative studies of aquatic fungal communities are few and far between, due to the scarcity of adequate datasets. We combined all publicly available fungal 18S ribosomal RNA (rRNA) gene sequences with new sequence data from a marine fungi culture collection. We further enriched this dataset by adding validated contextual data. Specifically, we included...

Phosphorylation-Responsive Membrane Transport of Peptides

Shu Peng, Andrea Barba-Bon, Yu-Chen Pan, Werner Nau, Dong-Sheng Guo & Andreas Hennig
Until he gets you to the other side: Highly efficient counterion activation by amphiphilic calixarenes (gray cones) can mediate the transport of short peptide substrates for kinases across lipid memb...

Broad-Spectrum Tunable Photoluminescent Nanomaterials Constructed from a Modular Light-Harvesting Platform Based on Macrocyclic Amphiphiles

Zhe Xu, Shu Peng, Yu-Ying Wang, Ji-Kai Zhang, Alexandra I. Lazar & Dong-Sheng Guo
Broad-spectrum tunable photoluminescent nanomaterials are developed based on macrocyclic amphiphiles serving as a novel modular light-harvesting platform with discrete addressability of luminophores ...

Triple Emission fromp-Dimethylaminobenzonitrile-Cucurbit[8]uril Triggers the Elusive Excimer Emission

Mhejabeen Sayed, Frank Biedermann, Vanya D. Uzunova, Khaleel I. Assaf, Achikanath C. Bhasikuttan, Haridas Pal, Werner M. Nau & Jyotirmayee Mohanty
Abstract The intriguing dual-emission behavior of p- dimethylaminobenzonitrile (DMABN) and the identity of the associated excited states is, arguably, the most extensively investigated and also con...

Data from: The oceanic biological pump: rapid carbon transfer to depth at continental margins during winter

Laurenz Thomsen, Jacopo Aguzzi, Corrado Costa, Fabio De Leo, Andrea Ogston & Autun Purser
The oceanic biological pump is responsible for the important transfer of CO2-C as POC “Particulate Organic Carbon” to the deep sea. It plays a decisive role in the Earth’s carbon cycle and significant effort is spent to quantify its strength. In this study we used synchronized daily time-series data of surface chlorophyll-a concentrations from the NASA’s MODIS satellite in combination with hourly to daily observations from sea surface buoys and from an Internet Operated Vehicle...

Physical and hydrodynamic properties of deep sea mining-generated, abyssal sediment plume in the Clarion Clipperton fracture zone (eastern-central Pacific)

Benjamin Gillard, Kaveh Purkiani, Morten H. Iversen, Annemiek Vink, Damianos Chatzievangelou & Laurenz Thomsen
The anthropogenic impact of polymetallic nodule harvesting in the Clarion-Clipperton Fracture Zone is expected to strongly affect the benthic ecosystem. To predict the long-term, industrial-scale impact of nodule mining on the deep-sea environment and to improve the reliability of the sediment plume model, information about the specific characteristics of deep-sea particles is needed. Discharge simulations of mining-related fine-grained (median diameter ≈ 20 μm) sediment plumes at concentrations of 35–500 mg L–1 (dry weight) showed a...

Shear strength data of box core sediments during SONNE cruise SO242/1

Jens Greinert, Johannes Post & Andrea Koschinsky

An Amphiphilic Sulfonatocalix[5]arene as an Activator for Membrane Transport of Lysine‐rich Peptides and Proteins

Yu-Chen Pan, Andrea Barba-Bon, Han‐Wen Tian, Fei Ding, Andreas Hennig, Werner Nau & Dong-Sheng Guo
An amphiphilic sulfonatocalix[5]arene (sCx5-6C) was rationally designed as an activator for membrane transport of lysine-rich peptides and proteins. sCx5-6C binds tightly with lysine and is able to e...

Nanomolar Binding of Steroids to Cucurbit[n]urils: Selectivity and Applications

Alexandra I. Lazar, Frank Biedermann, Kamila R. Mustafina, Khaleel I. Assaf, Andreas Hennig & Werner M. Nau
Cucurbit[n]urils (CBn, n = 7, 8) serve as artificial receptors for steroids (21 tested), including the hormones testosterone and estradiol as well as steroidal drugs. Fluorescence displacement titrations and isothermal titration calorimetry (ITC) provided up to nanomolar binding affinities in aqueous solution for these hydrophobic target molecules, exceeding the values of known synthetic receptors. Remarkable binding selectivities, even for homologous steroid pairs, were investigated in detail by NMR, X-ray crystal diffraction, ITC, and quantum chemical...

Supramolecular Tandem Enzyme Assays for Multiparameter Sensor Arrays and Enantiomeric Excess Determination of Amino Acids

David M. Bailey, Andreas Hennig, Vanya D. Uzunova & Werner M. Nau
Abstract The coupling of an enzymatic transformation with dynamic host-guest exchange allows the unselective binding of macrocycles to be used for highly selective analyte sensing. The resulting su...

Inclusion of neutral guests by water-soluble macrocyclic hosts – a comparative thermodynamic investigation with cyclodextrins, calixarenes and cucurbiturils

Dong-Sheng Guo, Vanya D. Uzunova, Khaleel I. Assaf, Alexandra I. Lazar, Yu Liu & Werner M. Nau
(2016). Inclusion of neutral guests by water-soluble macrocyclic hosts – a comparative thermodynamic investigation with cyclodextrins, calixarenes and cucurbiturils. Supramolecular Chemistry: Vol. 28, Thirteenth International Conference on Calixarenes (Calix 2015), pp. 384-395.

Identification, classification, and signal amplification capabilities of high-turnover gas binding hosts in ultra-sensitive NMR

Andreas Hennig, Martin Kunth, Christopher Witte & Leif Schröder
Labile complexation of cucurbit[6]uril with xenon becomes detectable through saturation transfer with highly efficient gas turnover for ultra-sensitive NMR applications.

Determining Protease Substrate Selectivity and Inhibition by Label-Free Supramolecular Tandem Enzyme Assays

Garima Ghale, Vijayakumar Ramalingam, Adam R. Urbach & Werner M. Nau
An analytical method has been developed for the continuous monitoring of protease activity on unlabeled peptides in real time by fluorescence spectroscopy. The assay is enabled by a reporter pair comprising the macrocycle cucurbit[7]uril (CB7) and the fluorescent dye acridine orange (AO). CB7 functions by selectively recognizing N-terminal phenylalanine residues as they are produced during the enzymatic cleavage of enkephalin-type peptides by the metalloendopeptidase thermolysin. The substrate peptides (e.g., Thr-Gly-Ala-Phe-Met-NH2) bind to CB7 with moderately...

Registration Year

  • 2022
  • 2021
  • 2018
  • 2017
  • 2015

Resource Types

  • Dataset


  • Jacobs University
  • Nankai University
  • Institute of Nanotechnology
  • Department of Chemistry and Earth Sciences
  • State Key Laboratory of Polymer Physics and Chemistry
  • European Remanufacturing Council
  • University of Washington
  • Trinity University
  • Tun Hussein Onn University of Malaysia
  • Max Planck Institute for Marine Microbiology