Results 41 to 50 of about 99,259 (265)

DFT study on the structure and stability of Al13Bn±m clusters [PDF]

open access: yesJournal of the Serbian Chemical Society, 2017
Al13Bn ±m clusters were studied by the DFT-UB3LYP/6-311+G(d) method. The variations of structural and electronic properties with the changes of n and m were probed.
Yu Jun-Zai   +3 more
doaj   +1 more source

Azobenzene's Cross‐Scale Optics and Photonics: Molecular Photoswitching, Mesoscopic Material Motions, and Adaptive Devices

open access: yesAdvanced Materials, EarlyView.
Azobenzene photoswitches translate molecular‐scale E/Z photoisomerization into macroscopic material responses and device‐level photonic functions. This Review highlights how azobenzene research has evolved from molecular photochemistry to photoalignment, mass migration, photomechanics, and heat release, ultimately enabling holography, reconfigurable ...
Heeju Son   +20 more
wiley   +1 more source

Identification of Glyceride Using Full Collision Energy Ramp-Pseudo-MS3 Spectrum Matching Strategy

open access: yesZhipu Xuebao
Glycerides (Glys), a class of esterification products of glycerol and fatty acids, serve as significant pathological markers for a variety of metabolic diseases.
Yu-xuan ZHOU   +5 more
doaj   +1 more source

GEOMETRICAL ISOMERS OF RETINENE [PDF]

open access: yesJournal of General Physiology, 1953
Five crystalline retinenes have been isolated, which have every appearance of being cis-trans isomers of one another. They are all-trans retinene; three apparently mono-cis isomers: neoretinenes a and b and isoretinene a; and isoretinene b, an apparently di-cis isomer.
R, HUBBARD, R I, GREGERMAN, G, WALD
openaire   +2 more sources

Phase Engineering of Atomically Precise Nanoclusters (APNCs) of Gold and Beyond

open access: yesAdvanced Materials, EarlyView.
Engineering the structural phase of materials is of paramount importance for both fundamental research and practical applications. In this Review, we summarize the recent progress in controlling the phases of atomically precise nanoclusters (APNCs) of gold, silver and copper, as well as bimetallic systems. The phase‐enabled material properties of APNCs
Yitong Wang   +4 more
wiley   +1 more source

Analytical Challenges in the Separation and Identification of Ten Substituted Cathinone Isomers (C12H17NO) Using EI-GC-MS and ESI-LC-MS/MS

open access: yesChemosensors
Synthetic cathinones are among the most frequently encountered classes of new psychoactive substances, and many occur as structural isomers sharing identical molecular formulas and highly similar mass-spectral features. Among them, substituted cathinones
Shih-Rong Lin   +5 more
doaj   +1 more source

Decoupling Photochemical and Photothermal Effects Using Molecular Motors Enables Fast, Intelligent, and Life‐Like Motions in Soft Materials

open access: yesAdvanced Materials, EarlyView.
A light‐responsive liquid crystal (LC) polymer network integrating molecular rotary motors and photothermal converters enables the decoupling of photochemical and photothermal effects. Selective wavelength activation allows orthogonal control over persistent shape encoding and fast reversible motion, enabling programmable soft robots capable of complex
Guiying Long   +3 more
wiley   +1 more source

Stereoisomers of Colourless Carotenoids from the Marine Microalga Dunaliella salina

open access: yesMolecules, 2020
Carotenoids comprise a diverse range of naturally occurring stereoisomers, which differ in their physico-chemical properties. Their biosynthesis begins with phytoene, which is a rarity among carotenoids because it is colourless.
Laura Mazzucchi   +2 more
doaj   +1 more source

Stimuli‐Responsive Hierarchical Structuring Controls Survival and Programs Hydrogelation of Supramolecular Metallofibers

open access: yesAdvanced Materials, EarlyView.
Aqueous Zn(II) Salphen metallofibers decorated with PNIPAM undergo reversible, multi‐stimuli‐responsive hierarchical bundling. This higher‐order structuring kinetically stabilizes the otherwise fragile assemblies against dilution, acidic hydrolysis, and transmetallation, enables selective sorting of responsive fibers, and programs hydrogelation at ...
Merlin R. Stühler   +5 more
wiley   +1 more source

Rotational Isomers of Diphenhydramine

open access: yesYAKUGAKU ZASSHI, 2018
 Diphenhydramine (DP), an antihistaminic agent, may become colored and daker or more fluorescent during storage. Herein, we spectroscopically examined the causes of this phenomenon under various DP storage conditions and durations. The infrared vibration-rotation spectrum shows multiple Gauche (G)-type conformers with different intramolecular n→π ...
Matsue, Ebitani, Toshiaki, Ebitani
openaire   +3 more sources

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