Results 31 to 40 of about 266,478 (309)

Conformational Preferences of 3-(Dimethylazinoyl)propanoic Acid as a Function of pH and Solvent; Intermolecular versus Intramolecular Hydrogen Bonding [PDF]

open access: yes, 2009
The conformational equilibrium of 3-(dimethylazinoyl)propanoic acid (DMAPA, azinoyl = N^+(O^−) has a weak pH-dependence in D_2O, with a slight preference for trans in alkaline solutions.
Alley, Olivia J.   +5 more
core   +2 more sources

Effect of molecular and electronic structure on the light harvesting properties of dye sensitizers [PDF]

open access: yes, 2007
The systematic trends in structural and electronic properties of perylene diimide (PDI) derived dye molecules have been investigated by DFT calculations based on projector augmented wave (PAW) method including gradient corrected exchange-correlation ...
Acebal P.   +51 more
core   +3 more sources

Collective exchange processes reveal an active site proton cage in bacteriorhodopsin [PDF]

open access: yes, 2020
Proton translocation across membranes is vital to all kingdoms of life. Mechanistically, it relies on characteristic proton flows and modifications of hydrogen bonding patterns, termed protonation dynamics, which can be directly observed by fast magic ...
Brünig, Florian N.   +5 more
core   +1 more source

Deposition and transport of functionalized carbon nanotubes in water-saturated sand columns [PDF]

open access: yes, 2012
Knowledge of the fate and transport of functionalized carbon nanotubes (CNTs) in porous media is crucial to understand their environmental impacts. In this study, laboratory column and modeling experiments were conducted to mechanistically compare the ...
Carpena, Rafael Munoz   +6 more
core   +3 more sources

Computer-Assisted Design of Environmentally Friendly and Light-Stable Fluorescent Dyes for Textile Applications. [PDF]

open access: yes, 2019
Five potentially environmentally friendly and light-stable hemicyanine dyes were designed based on integrated consideration of photo, environmental, and computational chemistry as well as textile applications.
Chen, Guoqiang   +2 more
core   +1 more source

Non-specific cellular uptake of surface-functionalized quantum dots

open access: yes, 2010
We report a systematic empirical study of nanoparticle internalization into cells via non-specific pathways. The nanoparticles were comprised of commercial quantum dots (QDs) that were highly visible under a fluorescence confocal microscope.
Goldys, E M   +5 more
core   +1 more source

Chemical Transformation of Carboxyl Groups on the Surface of Silicon Carbide Quantum Dots [PDF]

open access: yes, 2014
Silicon carbide quantum dots in the size range of 1−10 nm are in the center of interest with unique properties that makes them very promising biomarkers.
Balogh, István   +6 more
core   +1 more source

Effect of pressure on the crystal structure of alpha-glycylglycine to 4.7 GPa; application of Hirshfeld surfaces to analyse contacts on increasing pressure [PDF]

open access: yes, 2006
The crystal structure of alpha-glycylglycine (alpha-GLYGLY) has been determined at room temperature at pressures between 1.4 and 4.7 GPa. The structure can be considered to consist of layers.
Allan, D R   +3 more
core   +1 more source

Possible strong symmetric hydrogen bonding in disodium trihydrogen bis(2,2'-oxydiacetate) nitrate [PDF]

open access: yes, 2005
In the title compound, 2Na+·C8H11O10-·NO3-, the NaI atom is heptacoordinate with an approximately pentagonal-bipyramidal geometry. A possible strong symmetric hydrogen bond, with the H atom located at an inversion centre and an OO distance of 2.450 (2) Å,
Fritsch, S.   +3 more
core   +1 more source

Cell wall target fragment discovery using a low‐cost, minimal fragment library

open access: yesFEBS Letters, EarlyView.
LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan   +5 more
wiley   +1 more source

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