Results 61 to 70 of about 30,747 (247)

Analysis of Organophosphorus Compounds. 1. Application of Iodine-Azide Reaction for Detection of Thiophosphoorganic Compounds in Thin-Layer Chromatography [PDF]

open access: yes, 2004
Wydrukowano z dostarczonych Wydawnictwu UŁ gotowych materiałówZadanie pt. Digitalizacja i udostępnienie w Cyfrowym Repozytorium Uniwersytetu Łódzkiego kolekcji czasopism naukowych wydawanych przez Uniwersytet Łódzki nr 885/P-DUN/2014 zostało ...
Ciesielski, Witold   +2 more
core  

Geminal Difunctionalization of Ketones via C─S Bond Insertion of Photogenerated Donor–Donor Diazo Compounds

open access: yesAngewandte Chemie International Edition, EarlyView.
Geminal difunctionalization of readily available building blocks provides rapid access to molecular complexity. This work introduces a strategy for installing two distinct functional groups on a carbonyl carbon by transforming it into a donor–donor diazo compound, enabling both batch and flow applications with broad solvent compatibility.
Vincent George   +13 more
wiley   +1 more source

Poly (vinylpyrrolidone)-Grafted Silica as a Polymeric Cosolvent Catalyst for Organic Transformations in Organic and Aqueous Media [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2015
Poly (vinylpyrrolidone)-grafted silica as an organic-inorganic hybrid material was used as an effective heterogeneous polymeric cosolvent catalyst in organic reactions.
S. Ghasemi   +3 more
doaj  

Single-Ion Magnetism in a Three-Dimensional Thiocyanate-Bridged Dysprosium(III) Framework

open access: yesChemistry, 2023
New three-dimensional (3D) lanthanide framework compounds supported by bridging thiocyanate ligand and K+ cations, K4[Ln(NCS)4(H2O)4](NCS)3(H2O)2(1: Ln = Dy, 2: Ln = Tb, 3: Ln = Gd) have been synthesized.
Qingyun Wan   +5 more
doaj   +1 more source

1D/3D Heterojunction for High‐Efficiency Hole‐Transport Layer‐Free Carbon‐Based Wide‐Bandgap Perovskite Solar Cells

open access: yesCarbon Energy, EarlyView.
By modifying wide‐bandgap high‐Cs perovskite surfaces with quaternary ammonium salts of varying alkyl‐chain lengths, tetrapropylammonium bromide (TPABr) is shown to successfully construct a 1D/3D heterojunction. This structure effectively passivates interface defects and optimizes energy level alignment, achieving a champion efficiency of 20.14% with ...
Lingcong Li   +9 more
wiley   +1 more source

Louis Henry: The Henry reaction and other organic syntheses

open access: yesRevista CENIC Ciencias Químicas, 2018
Louis Henry (1834-1913) was a Belgian chemist having a sharp deductive reasoning in organic chemistry, which led him to synthesize hundreds of new compounds in a wide range of functionalities.
Jaime Wisniak
doaj  

The Enigma of Sponge-Derived Terpenoid Isothiocyanate–Thiocyanate Pairs: A Biosynthetic Proposal

open access: yesMarine Drugs
The co-occurrence of rare terpenoid thiocyanates (R-SCN), structurally similar to their more common isothiocyanate isomers (R-NCS), poses an enigma: how does the accepted path, terpenyl cation R+ → R-NC → R-NCS, accommodate R-SCN?
Tadeusz F. Molinski
doaj   +1 more source

Effect of Nitrates, Thiocyanates and Selenium on the Iron and Iodine Status of Postpartum Women

open access: yesFolia Medica, 2016
Aim: To find correlations between high thiocyanate and nitrate levels and low selenium levels and the indicators of the iodine and iron status of postpartum women.
Bivolarska Anelia V.   +3 more
doaj   +1 more source

Single-Molecule Transistors: Electron Transfer in the Solid State [PDF]

open access: yes, 2006
Single-molecule transistors (SMTs) incorporating individual small molecules are unique tools for examining the fundamental physics and chemistry of electronic transport in molecular systems at the single nanometer scale.
Ciszek, Jacob W.   +4 more
core   +1 more source

Key Challenges for Commercializing Perovskite–Silicon Tandem Solar Cells

open access: yesCarbon Energy, EarlyView.
This review discusses the scientific and technological challenges in advancing perovskite–silicon tandem solar cells (PSTSCs) from lab‐scale to commercial viability, focusing on long‐term stability, scalability, and economic feasibility. Key issues include intrinsic and extrinsic degradation factors, installation conditions, environmental impacts, and ...
Bilal Mehmood   +16 more
wiley   +1 more source

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