Results 1 to 10 of about 2,342,127 (361)

Intramolecular Force Mapping at Room Temperature. [PDF]

open access: hybridACS Nano, 2023
Acquisition of dense, three-dimensional, force fields with intramolecular resolution via noncontact atomic force microscopy (NC-AFM) has yielded enormous progress in our ability to characterize molecular and two-dimensional materials at the atomic scale.
Brown T, Blowey PJ, Henry J, Sweetman A.
europepmc   +6 more sources

Accelerating QM/MM Free Energy Computations via Intramolecular Force Matching. [PDF]

open access: greenJ Chem Theory Comput, 2018
The calculation of free energy differences between levels of theory has numerous potential pitfalls. Chief among them is the lack of overlap, i.e., ensembles generated at one level of theory (e.g., "low") not being good approximations of ensembles at the
Hudson PS   +3 more
europepmc   +8 more sources

Intramolecular Force Contrast and Dynamic Current-Distance Measurements at Room Temperature. [PDF]

open access: greenPhysical Review Letters, 2015
Scanning probe microscopy can be used to probe the internal atomic structure of flat organic molecules. This technique requires an unreactive tip and has, until now, been demonstrated only at liquid helium and liquid nitrogen temperatures. We demonstrate
F. Huber   +5 more
semanticscholar   +5 more sources

Intramolecular Force Field of some Tetrahedral Molecules and Ions [PDF]

open access: hybridZeitschrift für Naturforschung A, 1972
The orbital valence force field (OVFF), and the Urey-Bradley force field (UBFF) have been employed to calculate the force constants for six molecules and ions (AlCl4-, AlBr4-, AlI4-, Til4- , Os16O4 , and Os18O4).
B. B. Srivastava   +3 more
semanticscholar   +4 more sources

Intramolecular Force Field of Some Tetrahedral Thio and Seleno Anions [PDF]

open access: hybridZeitschrift für Naturforschung A, 1974
The orbital valence force field (OVFF) and the Urey- Bradley force field (UBFF) have been employed to evaluate the force constants of thio and seleno anions of VA, VB, VIB and VIIB group atoms of the periodic table.
N. K. Sanyal, P. Ahmad
semanticscholar   +4 more sources

Polymer Mechanochromism from Force-Tuned Excited-State Intramolecular Proton Transfer. [PDF]

open access: greenJournal of the American Chemical Society, 2022
Real-time monitoring of strain/stress in polymers is a big challenge to date. Herein, we for the first time report an ESIPT (excited-state intramolecular proton transfer)-based mechanochromic mechanophore (MM).
Huan Hu   +4 more
semanticscholar   +2 more sources

Molecular Simulation of Caloric Properties of Fluids Modelled by Force Fields with Intramolecular Contributions: Application to Heat Capacities [PDF]

open access: greenJ. Chem. Phys. 147, 043508 (2016), 2017
The calculation of caloric properties such as heat capacity, Joule-Thomson coefficients and the speed of sound by classical force-field-based molecular simulation methodology has received scant attention in the literature, particularly for systems composed of complex molecules whose force fields (FFs) are characterized by a combination of ...
William R. Smith   +3 more
arxiv   +3 more sources

Characterization of Inter- and Intramolecular Interactions of Amyloid Fibrils by AFM-Based Single-Molecule Force Spectroscopy [PDF]

open access: gold, 2016
Amyloids are fibrous protein aggregates defined by shared specific structural features. Abnormal accumulation of amyloid in organs leads to amyloidosis, which results in various neurodegenerative diseases.
Yinli Li   +6 more
semanticscholar   +2 more sources

Vibrational Assignments and Intramolecular Force Field of Trimethylaluminum [PDF]

open access: yesBulletin of the Chemical Society of Japan, 1965
A vacuum infrared cell for reactive or intermediate species has been devised by the use of polyethylene sheets as optical windows. The infrared spectra in the 4000–3100cm−1, 2500–1500 cm−1, 1250–750 cm−1 and 700–65 cm−1 regions can be measured with this ...
T. Ogawa, K. Hirota, T. Miyazawa
semanticscholar   +3 more sources

Tetrahedrality, hydrogen bonding and the density anomaly of the central force water model. A Monte Carlo study [PDF]

open access: yesCondensed Matter Physics, 2021
Monte Carlo computer simulations in the canonical and grand canonical statistical ensemble were used to explore the properties of the central force (CF1) water model.
V. Ravnik   +3 more
doaj   +2 more sources

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