Results 41 to 50 of about 3,172,708 (264)
optimizing the searches for interstellar heterocycles [PDF]
, 2021 It is a fact that interstellar formation processes are thermodynamically affected. Based on this, the seven heterocycles; imidazole, pyridine, pyrimidine, pyrrole, quinoline, isoquinoline and furan that have been searched for from different astronomical sources with only upper limits of their column density determined without any successful detection ...
arxiv +1 more source
Quantum Rate Electrodynamics and Resonant Junction Electronics of Heterocyclic Molecules [PDF]
arXiv, 2023 Quantum rate theory encompasses the electron-transfer rate constant concept of electrochemical reactions as a particular setting, besides demonstrating that the electrodynamics of these reactions obey relativistic quantum mechanical rules. The theory predicts a frequency $\nu = E/h$ for electron-transfer reactions, in which $E = e^2/C_q$ is the energy ...
arxiv
CdS nanoparticles capped with 1-substituted 5-thiotetrazoles: Synthesis, characterization, and thermolysis of the surfactant [PDF]
Chem. Mater. 20 (2008) 4545, 2013 We propose a new type of surfactants, namely, tetrazole derivatives which can be controllably removed from the nanoparticle surface. Tetrazoles are a peculiar class of heterocyclic compounds. The presence of four nitrogen atoms in the tetrazole ring determines their interesting physical and chemical properties.
arxiv +1 more source
A Search for Heterocycles in GOTHAM Observations of TMC-1 [PDF]
, 2022 We have conducted an extensive search for nitrogen-, oxygen- and sulfur-bearing heterocycles toward Taurus Molecular Cloud 1 (TMC-1) using the deep, broadband centimeter-wavelength spectral line survey of the region from the GOTHAM large project on the Green Bank Telescope.
arxiv +1 more source
Triazine: An Important Building Block of Organic Materials for Solar Cell Application
Molecules, 2022 Since the beginning of the 21st century, triazine-based molecules have been employed to construct different organic materials due to their unique optoelectronic properties. Among their applications, photovoltaics stands out because of the current need to
Valeria Dávila Cerón +2 more
doaj +1 more source
A Search for Alternative Solid Rocket Propellant Oxidizers [PDF]
arXiv, 2022 Carbon-based caged and heterocyclic compounds tend to have strained molecular structures leading to high heats of formation and energetic behavior. In the current paper, molecular modelling calculations for 10 caged compounds of this type along with 2 strained aliphatic compounds and 4 simple cyclic chains are presented in view of their possible use as
arxiv
Enhancing Sorghum Productivity with Methyur, Kamethur, and Ivin Plant Growth Regulators †
Biology and Life Sciences Forum, 2023 Sorghum is one of the most important foods, fodder, and technical crops grown in the world. Global climate change and environmental pollution with toxic industrial and agricultural waste are the most unfavorable environmental factors affecting the growth
Victoria Anatolyivna Tsygankova +4 more
doaj +1 more source
Enumeration of saturated and unsaturated substituted N-heterocycles [PDF]
arXiv, 2023 Mathematical and computational approaches in chemistry and biochemistry fill a gap in respect to the analysis of the physicochemical features of compounds and their functionality and provide an overview of known as well as yet unknown, but hypothetically possible structures.
arxiv
Towards a Molecular Level Understanding of the Sulfanilamide-Soil Organic Matter-Interaction [PDF]
Science of the Total Environment 559, 347 (2016), 2016 In-depth understanding of the sorption mechanisms of organic pollutants, like the antibiotic sulfanilamide (SAA), in soil requires a combined experimental and theoretical approach. Therefore, sorption experiments of SAA on well-characterized samples of soil size-fractions were combined with the modeling of SAA-soil-interaction via quantum chemical ...
arxiv +1 more source
One-pot multi-reaction processes: synthesis of natural products and drug-like scaffolds [PDF]
, 2014 One-pot multi-reaction processes involving Overman rearrangements, metathesis cyclizations, and Diels–Alder reactions have been developed for the rapid and efficient synthesis of amino-substituted carbocyclic and heterocyclic compounds.
Calder, Ewen D.D. +2 more
core +1 more source