Steffen Bähring

Steffen Bähring
University of Southern Denmark | SDU · Department of Physics, Chemistry and Pharmacy

Ph.D.

About

31
Publications
4,778
Reads
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499
Citations
Citations since 2017
19 Research Items
414 Citations
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
2017201820192020202120222023020406080
Additional affiliations
August 2013 - December 2015
Danish Technological Institute, Aarhus, Denmark
Position
  • Research Consultant
Description
  • Development of technologies for the Offshore Industry
February 2009 - January 2013
University of Southern Denmark
Position
  • PhD Student

Publications

Publications (31)
Article
Full-text available
We report here a nanosized "buckytrap", 1, constructed from two bis-zinc(II) expanded-TTF (exTTF) porphyrin subunits. Two forms, 1a and 1b, differing in the axial ligands, H2O vs tetrahydrofuran (THF), were isolated and characterized. Discrete host-guest inclusion complexes are formed upon treatment with fullerenes as inferred from a single-crystal...
Article
Full-text available
We report a fully organic pyridine-tetrapyrrolic U-shaped acyclic receptor 10, which prefers a supramolecular pseudo-macrocyclic dimeric structure (10)2 in a less polar, non-coordinating solvent (e.g., CHCl3). Conversely, when it is crystalized from a polar, coordinating solvent (e.g., N,N-dimethylformamide, DMF), it exhibited an infinite supramole...
Article
Full-text available
We report a fully organic pyridine-tetrapyrrolic U-shaped acyclic receptor 10, which prefers a supramolecular pseudo-macrocyclic dimeric structure (10)2 in a less polar, non-coordinating solvent (e.g., CHCl3). Conversely, when it crystalized from a polar, coordinating solvent (e.g., N,N-dimethylformamide, DMF), it exhibited an infinite supramolecul...
Article
Full-text available
The peroxidase activity of hemin-peptide complexes remains a potential factor in oxidative damage relevant to neurodegeneration. Here, we present the effect of temperature, ionic strength, and pH relevant to pathophysiological conditions on the dynamic equilibrium between high-spin and low-spin hemin-Aβ40 constructs. This influence on peroxidase ac...
Article
There is a recognized need in the area of explosives detection for fluorescence-based sensing systems that are capable of not only producing a turn-on response but also generating a distinctive spectral signature for a given analyte. Here, we report several supramolecular ensembles displaying efficient fluorophore displacement that give rise to an...
Preprint
Full-text available
“Semiconducting Supramolecular Organic Frameworks Assembled from a NIR Fluorescent Macrocyclic Probe and Fullerenes” Ramandeep Kaur, Sajal Sen, Mads Christian Larsen, Luciana Tavares, Jakob Kjelstrup-Hansen, Masatoshi Ishida, Vincent M. Lynch, Steffen Bähring,* Dirk M. Guldi,* Jonathan L. Sessler,* Atanu Jana*
Article
Full-text available
We report here a new expanded tetrathiafulvalene-(exTTF)-porphyrin scaffold, 2, that acts as a ball and socket receptor for C 60 and C 70. Supramolecular interactions between 2 and these fullerenes serve to stabilize three-dimensional (3D) supramolecular organic frameworks (SOFs) in the solid state formally comprising peapod-like linear assemblies....
Article
Full-text available
We report here a fully organic, self-assembled dimeric receptor, constructed from acyclic naphthyridylpolypyrrolic building block. The cage-like dimer is stable in the solid state, in solution, and in gas phase, as inferred from X-ray diffraction, and spectroscopic analyses. This system acts as a receptor for oxalic acid, maleic acid, and malonic...
Article
Full-text available
The first tetrakis-tetrathiafulvalene-calix[4]pyrrole (TTF-C[4]P) was reported in 2004. Early on it and related π-extended TTF-C[4]Ps were found to function as both anion receptors and as hosts for planar electron deficient neutral guests, including nitroaromatic explosives. Anion binding was found to occur with a 1 : 1 binding stoichiometry and to...
Article
Full-text available
Tetrathiafulvalene (TTF) has been extensively explored as a π-electron donor in supramolecular systems. Over the last two decades substantial advances have been made in terms of constructing elaborate architectures based on TTF and in exploiting the resulting systems in the context of supramolecular host–guest recognition. The inherent electron-don...
Data
After the epochal discovery of the “organic metal”, namely, tetrathiafulva- lene (TTF)−7,7,8,8-tetracyano-p-quinodimethane (TCNQ) dyad in 1973, scientists have made efforts to derivatize TTF for constructing various supramolecular architectures to control the charge-transfer processes by adjusting the donor−acceptor strength of the dyads for numero...
Article
Full-text available
Tetrathiafulvalene (TTF) has been extensively explored as a p-electron donor in supramolecular systems. Over the last two decades substantial advances have been made in terms of constructing elaborate architectures based on TTF and in exploiting the resulting systems in the context of supramolecular host–guest recognition. The inherent electron-don...
Article
The recognition of nitroaromatic explosives by a tetrakis-tetrathiafulvalene-calix[4]pyrrole receptor (TTF-C[4]P) yields a “turn on” and fingerprinting response in the resonance Raman scattering observed in solution and the solid state. Intensity changes in nitro vibrations with analyte complexation occur via a mechanism of resonance between the 78...
Article
A cage molecule incorporating three electron donating monopyrrolotetrathiafulvalene units was synthesised to host electron accepting [60]fullerenes. Formation of a strong 1:1 donor–acceptor (D–A) complex C60⊆1 was confirmed by solid state X-ray analysis as well as ¹H NMR and absorption spectroscopic analyses of the arising charge-transfer (CT) band...
Poster
Full-text available
In nature, enzymes are commonly seen to recognize even structurally complicated dimeric anions, e.g. phosphate dimers, sulfate dimers and pyrophosphate dimers. However, it is challenging for scientific community to create such specific anionic molecular receptors. Herein, we report a capsule-like bis-calix[4]pyrrole as a new molecular receptor for...
Article
Full-text available
Herein we describe a large capsule-like bis-calix[4]pyrrole 1, that is able to host concurrently two dihydrogen phosphate anions within a relatively large internal cavity. Evidence for the concurrent, dual recognition of the encapsulated anions came from 1H NMR and UV-vis spectroscopies and ITC titrations carried out in CD2Cl2/CD3OD (9/1, v/v) or D...
Article
The dual-analyte responsive behavior of tetraTTF-calix[4]pyrrole receptor 1 has shown to complex electron-deficient planar guests in a 2:1 fashion in the so-called 1,3-alternate conformation. However, stronger 1:1 complexes have been demonstrated with tetraalkylammonium halide salts that defer receptor 1 to its so-called cone conformation. Herein,...
Article
Full-text available
After the epochal discovery of the “organic metal”, namely, tetrathiafulvalene (TTF)–7,7,8,8-tetracyano-p-quinodimethane (TCNQ) dyad in 1973, scientists have made efforts to derivatize TTF for constructing various supramolecular architectures to control the charge-transfer processes by adjusting the donor–acceptor strength of the dyads for numerous...
Chapter
This chapter covers advances in the development of anion and ion pair recognition systems based on calix[4]pyrrole. The intention of this manuscript is to provide of an overview of promising systems for the sensing of relevant analytes, such as the toxic fluoride anion, phosphate anions, as well as the extraction and transport of anionic species an...
Conference Paper
The application of enzymatic generation and precipitation of calcium carbonate for the use as in-situproppant consolidation is an environmentally green technology that shows promise in the Danish North Sea. Hydraulic fracturing of producers with the aid of proppants to keep fractures open can present a problem if the proppants are back-produced as...
Conference Paper
Tracers in drilling mud have been used during coring operations as a tool to quantify the degree of mud filtrate-invasion in the core. This paper describes the application of a deuterium oxide water-based mud tracer that allows for real-time analysis of the tracer concentration while the drilling operation is ongoing. This ensures that a uniform mu...
Article
Supramolecular polymers are a class of macromolecules stabilized by weak non-covalent interactions. These self-assembled aggregates typically undergo stimuli-induced reversible assembly and disassembly. They thus hold great promise as so-called functional materials. In this work, we present the design, synthesis, and responsive behavior of a short...
Conference Paper
Short-circuit connections between injectors and producers resulting from induced or natural fractures in tight chalk reservoirs can divert the injection water resulting in poor sweep efficiency and early water breakthrough in producers. The overall impact is a significant reduction in oil recovery. Curing of these connections can be achieved throug...
Conference Paper
Long horizontal wells are hydraulically fractured or acid stimulated to economically develop chalk reservoirs in the North Sea. To separate the zones and ensure conformance, each fracture or zone is separated by isolation packers and flow is controlled with a sliding sleeve. With time, conformance control capability of the lower completion may be l...
Article
Full-text available
A π-extended tetrathiafulvalene-boradiazaindacene chimera, ex-TTF-BODIPY, has been prepared. The resulting system undergoes sequential one-electron oxidations, allowing access to both the mono-oxidized radical cationic and dicationic states. Additionally, ex-TTF-BODIPY displays electrochromic and electrofluorochromic behaviour in the near-IR portio...
Article
Using a tetrathiafulvalene functionalised calix[4]pyrrole (TTF-C[4]P; ) and alkyl diester-linked bis-dinitrophenols (), it was found that the solvent polarity and linker length have an effect on the molecular aggregation behaviour. 2D (1)H NOESY, DOSY NMR and UV-vis-NIR spectroscopic studies, as well as single crystal X-ray diffraction analyses sup...
Article
A new class of redox active free base and metalloporphyrins fused with the 1,3-dithiol-2-ylidene subunits present in tetrathiafulvalene, termed MTTFP (M = H2, Cu, Ni, Zn), have been prepared and characterized. The strong electron donating properties of MTTFP were probed by electrochemical measurement and demonstrated the oxidation potentials can be...
Article
The study of preorganization in receptors, particularly in cooperative receptors, and their reversible control by external stimuli is important for elucidating design strategies that can lead to increased sensitivity and external control of molecular recognition. In this work we present the design, synthesis, and operation of an asymmetric tetrathi...
Article
The study of controllable molecular recognition in supramolecular receptors is important for elucidating design strategies that can lead to external control of molecular recognition applications. In this work, we present the design and synthesis of an asymmetric (TTF) tetrathiafulvalene-calix[4]pyrrole receptor and show that its recognition of 1,3,...

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