Results 81 to 90 of about 9,503 (262)

Isomerism as a general scientific concept

open access: yesТонкие химические технологии, 2011
Consideration of objects of various fields of knowledge has shown that isomerism is a general scientific concept. Examples illustrating its manifestation in heterogeneous equilibria thermodynamics and chemical technology are given.
L. A. Serafimov   +2 more
doaj  

Tunable Reversible Photochromic Ultralong Organic Phosphorescence via a Universal Phenylpyridine Noncovalent Assembly Strategy

open access: yesAdvanced Science, EarlyView.
A concise supramolecular assembly strategy using α‐cyclodextrin and phenylpyridine derivatives affords dual‐functional materials with switchable multicolor photochromism and tunable ultralong organic phosphorescence, offering new platforms for various photonic applications. ABSTRACT Supramolecular photochromic materials capable of reversible alteration
Xue Bai   +8 more
wiley   +1 more source

Isomerization of carotenoids [PDF]

open access: yesBiochemical Journal, 1938
L, Zechmeister, P, Tuzson
openaire   +2 more sources

Chemoselective Metabolomics via a Modular Reactivity‐Encoding Platform

open access: yesAdvanced Science, EarlyView.
Conventional LC–MS underrepresents numerous metabolites due to heterogeneous ionization efficiencies and matrix interference. Here, we introduce a modular reactivity‐encoding platform (MREP) comprising four alkyne‐tagged probes that selectively derivatize key functional groups, followed by unified click‐chemistry capture to eliminate matrix components ...
Xin Tao   +10 more
wiley   +1 more source

Isomeric Ag14 Nanoclusters With Distinct Photophysical and Nanomechanical Properties

open access: yesAdvanced Science, EarlyView.
Ligand‐shell isomerism in atomically precise Ag14 nanoclusters is demonstrated to regulate core distortion, photoluminescence, and mechanical properties. Subtle changes in phosphine ligand arrangement drive a pronounced emission shift from green to red and alter crystal rigidity, revealing a direct structure‐property correlation that offers new design ...
Vivek Yadav   +14 more
wiley   +1 more source

Engineering Synergistic Intra‐/Intermolecular Conformational Locking via Side‐Chain Branching: A β‐Sheet‐Inspired Strategy for Planar NIR‐II Phototheranostic Aggregates

open access: yesAdvanced Science, EarlyView.
A bio‐inspired side‐chain branching strategy is developed to orchestrate a dual noncovalent conformational locking (NoCL) network, enabling the construction of perfectly planar NIR‐II phototheranostic aggregates. Such structural precision maximizes light‐harvesting efficiency and optimizes exciton dynamics, ensuring synchronized enhancements in NIR‐II ...
Cheng Lu   +11 more
wiley   +1 more source

Isomerismo cis-trans: de Werner aos nossos dias

open access: yesQuímica Nova, 1998
In coordination chemistry the study of geometrical isomerization and reactivity of specific isomers is a topic of major importance. The preparation of specific isomers often requires considerable complexity, and it is important to acquire a sense of what
Queiroz Salete Linhares   +1 more
doaj  

isomeric [PDF]

open access: yes, 2014
Citation: 'isomeric' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.I03291 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Untangling Inositol (Pyro)Phosphate Biology Through Emerging Technologies

open access: yesAdvanced Science, EarlyView.
Inositol (pyro)phosphates represent a vital class of intracellular messengers that govern multiple biological processes. The last decade has experienced a surge of interest in the functions of this class of signaling molecules, primarily due to the introduction of several innovative analytical technologies.
Adolfo Saiardi   +5 more
wiley   +1 more source

Synthesis, crystal structure and stability of a new isomer of bis(ethylenethiourea)dithiocyanatocobalt(II)

open access: yesActa Crystallographica Section E: Crystallographic Communications
The title compound, bis(imidazolidine-2-thione-κS)dithiocyanatocobalt(II), [Co(NCS)2(C3H6N2S)2], was prepared by the reaction of cobalt thiocyanate with ethylenethiourea in ethanol solution.
Christian Näther, Aleksej Jochim
doaj   +1 more source

Home - About - Disclaimer - Privacy