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Kaiserslautern, Germany

The University of Kaiserslautern is a research university in Kaiserslautern, Germany. It was founded in 1970 and is organized into 12 faculties. Wikipedia.

Patureau F.W.,University of Kaiserslautern
Angewandte Chemie - International Edition | Year: 2012

There and gone: Atoms, such as hydrogen or deuterium, commonly disappear and reappear at different locations in molecular structures. For example, carboxylic acids and hydroxycarbenes isomerize through atom tunneling events. It could happen in your reaction! Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source

Kubik S.,University of Kaiserslautern
Topics in Current Chemistry | Year: 2012

Molecular containers enclose a well defined cavity in which an appropriate guest molecule can be included. The corresponding complexes are generally characterized by high kinetic stability. Thermodynamic stability can be rather low, however, because attractive interactions are largely missing between host and guest causing binding to be mainly due to entropic factors. This situation can be improved by distributing appropriate binding sites across the inner surface of a molecular container to which an included guest can bind. This approach, while being conceptually simple, is not straightforward since the incorporation of converging binding sites into a concave surface is difficult and usually requires receptors architectures that differ from those of conventional covalently assembled molecular containers. Therefore, the term molecular cage rather than molecular container is often more appropriate for such types of receptors. In this overview, a selection of cage-type receptors is presented whose inner cavity is functionalized with groups that can engage in directed interactions with an included guest. These receptors, classified according to the type of interaction responsible for guest binding, were chosen to illustrate effects of the inwardly directed binding sites on receptor affinity, selectivity, or other binding properties. © 2011 Springer-Verlag Berlin Heidelberg. Source

Sirker J.,University of Kaiserslautern
Physical Review Letters | Year: 2010

We calculate the fidelity susceptibility χf for the Luttinger model and show that there is a universal contribution linear in temperature T (or inverse length 1/L). Furthermore, we develop an algorithm-based on a lattice path integral approach-to calculate the fidelity F(T) in the thermodynamic limit for one-dimensional quantum systems. We check the Luttinger model predictions by calculating χf(T) analytically for free spinless fermions and numerically for the XXZ chain. Finally, we study χf at the two phase transitions in this model. © 2010 The American Physical Society. Source

Hahn M.,University of Kaiserslautern
Journal of Chemical Biology | Year: 2014

The introduction of site-specific fungicides almost 50 years ago has revolutionized chemical plant protection, providing highly efficient, low toxicity compounds for control of fungal diseases. However, it was soon discovered that plant pathogenic fungi can adapt to fungicide treatments by mutations leading to resistance and loss of fungicide efficacy. The grey mould fungus Botrytis cinerea, a major cause of pre- and post-harvest losses in fruit and vegetable production, is notorious as a ‘high risk’ organism for rapid resistance development. In this review, the mechanisms and the history of fungicide resistance in Botrytis are outlined. The introduction of new fungicide classes for grey mould control was always followed by the appearance of resistance in field populations. In addition to target site resistance, B. cinerea has also developed a resistance mechanism based on drug efflux transport. Excessive spraying programmes have resulted in the selection of multiresistant strains in several countries, in particular in strawberry fields. The rapid erosion of fungicide activity against these strains represents a major challenge for the future of fungicides against Botrytis. To maintain adequate protection of intensive cultures against grey mould, strict implementation of resistance management measures are required as well as alternative strategies with non-chemical products. © 2014, Springer-Verlag Berlin Heidelberg. Source

Kubik S.,University of Kaiserslautern
Chemical Society Reviews | Year: 2010

Anion recognition by synthetic receptors in water is not a new field, indeed the first receptors that were shown to interact with anionic species exhibited high affinity in aqueous solutions. Anion recognition in aqueous solution was, however, for a long time the domain of receptors containing multiple positive charges and/or metal ions while interactions of neutral receptors with anions were believed to be too weak to be efficient in water. Independent work in several groups has recently shown that this assumption is not necessarily correct. As a consequence, a much wider range of receptors is now available with which anion recognition in competitive aqueous media can be achieved. This tutorial review presents selected examples of synthetic anion receptors active in aqueous solutions and guidelines to achieve anion recognition in water. © 2010 The Royal Society of Chemistry. Source

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