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Interactions between proteins and their solvent environment can be studied in a bottom-up approach using hydrogen-bonded chromophore-solvent clusters. The ultrafast dynamics following UV-light-induced electronic excitation of the…

Chemical Physics · Physics 2022-12-06 Jolijn Onvlee , Sebastian Trippel , Jochen Küpper

The interactions of a hydrophilic surface with water can significantly influence the characteristics of the liquid water interface. In this manuscript, we explore this influence by studying the molecular structure of liquid water at a…

Soft Condensed Matter · Physics 2022-09-19 Sucheol Shin , Adam P. Willard

Fluids under extreme confinement exhibit unique structures and intermolecular bonding, distinct from their bulk analogs, driving innovative applications at the water-energy nexus. Probing confined water experimentally at the length scale of…

Hydrogen bonding interactions with chromophores in chemical and biological environments play a key role in determining their electronic absorption and relaxation processes, which are manifested in their linear and multidimensional optical…

We introduce an exactly solvable statistical-mechanical model of the hydration of non-polar compounds, based on grouping water molecules in clusters where hydrogen bonds and isotropic interactions occur; interactions between clusters are…

Statistical Mechanics · Physics 2009-11-07 Pierpaolo Bruscolini , Lapo Casetti

Biomolecules couple to their aqueous environment through a variety of noncovalent interactions. Local structures at the surface of DNA and RNA are frequently determined by hydrogen bonds with water molecules, complemented by non-specific…

Chemical Physics · Physics 2019-09-10 Benjamin P. Fingerhut , Thomas Elsaesser

Molecules with an excess number of hydrogen-bonding partners play a crucial role in fundamental chemical processes, ranging from the anomalous diffusion in supercooled water to the transport of aqueous proton defects and the ordering of…

The peculiar structuring of liquid water stems from a fine-tuned molecular principle embodying the two different interaction demands of the water molecule: The formation of hydrogen bonds or the compensation for coordination defects. Here…

Soft Condensed Matter · Physics 2024-09-04 Nicolás A. Loubet , Alejandro R. Verde , Gustavo A. Appignanesi

A direct measure of hydrogen bonding in water under conditions ranging from the normal state to the supercritical regime is derived from the Compton scattering of inelastically-scattered X-rays. First, we show that a measure of the number…

We use appropriately defined short ranged reference models of liquid water to clarify the different roles local hydrogen bonding, van der Waals attractions, and long ranged electrostatic interactions play in the solvation and association of…

Statistical Mechanics · Physics 2015-02-20 Richard C. Remsing , John D. Weeks

Water is an associated liquid in which the main intermolecular interaction is the hydrogen bond (HB) which is limited to four per atom, independently of the number of neighbours. We have considered a hydrogen bond net superposed on Bernal's…

Statistical Mechanics · Physics 2009-11-07 Nara Guisoni , Vera Bohomoletz Henriques

Specific-heat ratio effects on the interaction between a planar shock wave and a two-dimensional heavy-cylindrical bubble are studied by the discrete Boltzmann method. Snapshots of schlieren images and evolutions of characteristic scales,…

Fluid Dynamics · Physics 2023-05-29 Dejia Zhang , Aiguo Xu , Jiahui Song , Yanbiao Gan , Yudong Zhang , Yingjun Li

Spectral properties of chromophores are used to probe complex biological processes in vitro and in vivo, yet how the environment tunes their optical properties is far from being fully understood. Here we present a method to calculate such…

Chemical Physics · Physics 2008-05-27 Adriano Mosca Conte , Emiliano Ippoliti , Rodolfo Del Sole , Paolo Carloni , Olivia Pulci

The unique structural properties of interfacial water are at the heart of a vast range of important processes in electrochemistry, climate science, and biophysics. At interfaces, water molecules exhibit preferential orientations and an…

Hydrogen bonding plays a role in the microphase separation behavior of many block copolymers, such as those used in lithography, where the stronger interactions due to H-bonding can lead to a smaller period for the self-assembled…

Soft Condensed Matter · Physics 2018-05-28 E. Patyukova , T. Rottreau , R. Evans , P. D. Topham , M. J. Greenall

Aromatic compounds form an unusual kind of hydrogen bond with water and ammonia molecules, known as the $\pi$-hydrogen bond. In this work, we report ab initio path integral molecular dynamics simulations enhanced by machine-learning…

Chemical Physics · Physics 2024-03-20 Krystof Brezina , Hubert Beck , Ondrej Marsalek

Vibrational coupling is relevant not only for dissipation of excess energy after chemical reactions but also for elucidating molecular structure and dynamics. It is particularly important for OH stretch vibrational spectra of water, for…

Chemical Physics · Physics 2016-11-22 Jan Schaefer , Ellen H. G. Backus , Yuki Nagata , Mischa Bonn

Hydration of hydrophobic solutes in water is the cause of different phenomena, including the hydrophobic heat-capacity anomaly, which are not yet fully understood. Because of its topicality, there has recently been growing interest in the…

Soft Condensed Matter · Physics 2009-11-10 Susanne Moelbert , Paolo De Los Rios

Interpretation of the X-ray spectra of water as evidence for its asymmetric structure has challenged the conventional symmetric nearly-tetrahedral model and initiated an intense debate about the order and symmetry of the hydrogen bond…

Chemical Physics · Physics 2014-06-23 Thomas D. Kühne , Rustam Z. Khaliullin

Inhibition of bubble coalescence in electrolyte solutions enables the formation of oceanic whitecaps and affects the heat and mass transfer in many bubble related engineering processes. For different electrolytes, the ability to inhibit…

Soft Condensed Matter · Physics 2024-02-27 Bo Liu , Rogerio Manica , Zhenghe Xu , Qingxia Liu
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