【题目】The chemical structure of water make s it an excellent medium for life. Water is actually quite simple, but the way the water molecule is forme d gives water its u 76properties. T he water molecule is m 77up of two hydrogen atoms an d one o 78atom. T hey form a polar ...
The water molecule.As oxygen is more electronegative than hydrogen, the electrons are pulled slightly toward oxygen, and hydrogen gets a small net positive charge. The oxygen gets a corresponding negative charge (Fig. 7.1). This results in polar properties of the water molecule (it has a ...
Generating experimentally unrelated target molecule-binding highly functionalized nucleic-acid polymers using machine learning In vitro library screening is a powerful approach to identify functional biopolymers, but only covers a fraction of possible sequences. Here, the authors use experimental in vitro se...
(c) Schematic representation of the water molecule ionization mechanism and surface. Reprinted with permission from Ref. [64]. Copyright 2019, Springer Nature. Oxygen plasma mechanism for introduction of functional groups on carbon-based materials surfaces. (d) Generation of four charged species. (e...
Atomic force microscopy is capable of resolving the chemical structure of a single molecule on a surface. In previous research, such high resolution has only been obtained at low temperatures. Here we demonstrate that the chemical structure of a single m
Modes of water molecule interactions. A: In the space filling representation, the oxygen atoms are red and the hydrogen atoms are gray. The hydrogen atoms “pull” the electrons from the oxygen atoms, which shift the centers of positive and negative charges to form a polar bond. The water ...
Structure, structure, structure! And what are those properties that characterize a particular kind of molecule and distinguish it from others? Just as real estate is valued by "location, location, location", the identity of a chemical species is defined by itsstructure. In its most fundamental ...
of SOM physical structure is supported also by water molecules that form clusters bridging SOM moieties. This article reports results suggesting that water is connected also to stabilization of SOM chemical structure. We analyzed the dynamics and composition of gases evolved during drying of 33 ...
This Collection highlights a selection of recent studies published in Communications Chemistry relating to the structure, function, detection and modification of biomolecules.
Proteins have been designed that assemble in different ways depending on whether an ‘effector’ molecule is present — a demonstration of allostery, the phenomenon that enables switch-like control of protein functions in nature. A. Joshua Wand ...