429 citations · 526 across the 7 of their papers we have counts for
8 papers
Structural Discrimination of Phosphate Contact Ion Pairs in Water by Femtosecond 2D-IR Spectroscopy
Achintya Kundu, Jakob Schauss, Benjamin P. Fingerhut +1
The distinct structures of contact ion pairs in water are identified. Nonlinear infrared (IR) spectroscopy and theoretical calculations allow for the separation and assignment of s…
Impact of RNA Melting on Hydrating Water Structure Mapped by Femtosecond 2D-IR Spectroscopy
Benjamin P. Fingerhut, Achintya Kundu, Jakob Schauss +1
We discern hydration geometries around the sugar-phosphate-backbone of an RNA double helix at the molecular level. RNA disordering upon melting is connected with a transition from…
Phosphate Vibrations Probe Electric Fields in Hydrated Biomolecules: Spectroscopy, Dynamics, and Interactions
Thomas Elsaesser, Jakob Schauss, Achintya Kundu +1
Electric interactions have a strong impact on the structure and dynamics of biomolecules in their native water environment. Given the variety of water arrangements in hydration she…
Magnesium Contact Ions Stabilize the Tertiary Structure of Transfer RNA: Electrostatics Mapped by Two-Dimensional Infrared Spectra and Theoretical Simulations
Jakob Schauss, Achintya Kundu, Benjamin P. Fingerhut +1
Ions interacting with hydrated RNA play a central role in defining its secondary and tertiary structure. While spatial arrangements of ions, water molecules, and phosphate groups h…
Aqueous Contact Ion Pairs of Phosphate Groups with Na, Ca and Mg -- Structural Discrimination by Femtosecond Infrared Spectroscopy and Molecular Dynamics Simulations
Benjamin P. Fingerhut, Jakob Schauss, Achintya Kundu +1
The extent of contact and solvent shared ion pairs of phosphate groups with Na, Ca and Mg ions in aqueous environment and their relevance for the stability of pol…
Change of Hydration Patterns upon RNA Melting Probed by Excitations of Phosphate Backbone Vibrations
Achintya Kundu, Jakob Schauss, Benjamin P. Fingerhut +1
The water hydration shell has decisive impact on the structural and functional properties of RNA. Changes of RNA structure upon melting and in biochemical processes are accompanied…
Contact Ion Pairs of Phosphate Groups in Water -- Two-Dimensional Infrared Spectroscopy of Dimethyl-Phosphate and Ab-Initio Simulations
Jakob Schauss, Achintya Kundu, Benjamin P. Fingerhut +1
The interaction of phosphate groups with ions in an aqueous environment has a strong impact on the structure and folding processes of DNA and RNA. The dynamic variety of ionic arra…
Ultrafast transmission electron microscopy using a laser-driven field emitter: femtosecond resolution with a high coherence electron beam
Armin Feist, Nora Bach, Nara Rubiano da Silva +12
We present the development of the first ultrafast transmission electron microscope (UTEM) driven by localized photoemission from a field emitter cathode. We describe the implementa…