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Discrimination between pathogenic and non-pathogenic E. coli strains by means of Raman microspectroscopy

Bacteria can be harmless commensals, beneficial probiotics, or harmful pathogens. Therefore, mankind is challenged to detect and identify bacteria in order to prevent or treat bacterial infections. Examples...

Influence of Carbon Sources on Quantification of Deuterium Incorporation in Heterophic Bacteria: A Raman-Stable Isotope Labeling Approach

A rapid and reliable method for the differentiation between active and inactive bacteria at single cell level is urgently needed in many fields including clinical diagnosis and environmental microbiology,...

The role of MLCT states in the Franck-Condon region of neutral, heteroleptic Cu(l)-4H-imidazolate complexes

The impact of the electronic structure of a series of 4H-imidazolate ligands in neutral, heteroleptic Cu(I) complexes is investigated. Remarkable broad and strong ligand-dependent absorption in the visible...

Understanding longitudinal optical oscillator strengths and mode order

A classical way of describing dielectric functions employs sums of contributions from damped harmonic oscillators. We derive the corresponding dispersion relations for the dielectric function and the inverse...

Exploring the evolution and epidemiology of the European CC1-MRSA-IV: tracking a multidrug-resistant community-associated methicillin-resistant Staphylococcus aureus clone

Is electron ping-pong limiting the catalytic hydrogen evolution activity in covalent photosensitizer-polyoxometalate dyads?

Understanding the limitations of catalytic processes enables the design of optimized catalysts. Here, femtosecond transient absorption spectroelectrochemistry is used to explore the photophysics of polyoxometalate-based...

Detection and Differentiation of Bacterial and Fungal Infection of Neutrophils from Peripheral Blood Using Raman Spectroscopy

Neutrophils are important cells of the innate immune system and the major leukocyte subpopulation in blood. They are responsible for recognizing and neutralizing invading pathogens, such as bacteria or...

Dithiafulvenyl-equipped Ru(II) bis-terpyridine complexes – Synthesis, photophysical and electrochemical properties

Dithiafulvalenes (DTFs) represent an important class of organic dyes known for their redox-activity and ability to oxidatively dimerize into tetrathiafulvalene vinylogues (TTFVs). These systems, in turn,...

Radiometric and angular calibration tests for the MEDA-TIRS radiometer onboard NASA’s Mars 2020 mission

This article describes a comprehensive testing method for the radiometric and angular calibration of the Thermal InfraRed Sensor (TIRS) onboard NASA’s Mars 2020 mission. First, details of the TIRS optomechanical...

FLIm-Guided Raman Imaging to Study Cross-Linking and Calcification of Bovine Pericardium

Bovine pericardium (BP) is a vascular biomaterial used in cardiovascular surgery that is typically cross-linked for masking antigenicity and enhance stability. There is a need for biochemical evaluation...