نتایج جستجو برای: hetero polymetallic complex

تعداد نتایج: 788667  

Journal: :Angewandte Chemie 2021

Cyclodextrin poly-functionalization has fueled progress in their use multiple applications such as enzyme mimicry, but also the polymer sciences, luminescence, sensors or for biomedical applications. However, regioselective access to a given pattern of functions on β-cyclodextrin is still very limited. We uncover new orienting group, thioacetate, that expands toolbox available cyclodextrin poly...

Abílio José Fraga do Nascimento Sobral Balu Krishnakumar Ganesamoorthy Thirunarayanan Inbasekaran Muthuvel, Kaliyamoorthy Gowthami Meenakshisundaram Swaminathan, Palusamy Suppuraj

Fe2V4O13 is prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), UV-diffuse reflectance spectroscopy (UV-DRS), high resolution scanning electron microscopy (HR-SEM) using energy dispersive X-ray spectroscopy (EDX) analysis. The hetero-Fenton catalyst can be used to mineralize Methyl Orange (MO) under UV-A light. The mineralization rate is influenced by hydr...

Journal: :Bioinformatics 2012
Ronny Lorenz Ivo L. Hofacker Stephan H. Bernhart

MOTIVATION While there are numerous programs that can predict RNA or DNA secondary structures, a program that predicts RNA/DNA hetero-dimers is still missing. The lack of easy to use tools for predicting their structure may be in part responsible for the small number of reports of biologically relevant RNA/DNA hetero-dimers. RESULTS We present here an extension to the widely used ViennaRNA Pa...

Journal: :Organic & biomolecular chemistry 2011
Xavier Bantreil Carine Vaxelaire Thomas Godet Evelyne Parker Carole Sauer Philippe Belmont

A family of furoquinolines were efficiently obtained through a tandem acetalization/cycloisomerization process catalyzed by (5 mol%) silver imidazolate polymer and triphenylphosphine, and diversity was brought by the use of 7 different alcohol groups. From these furoquinolines, 3 examples of reduced derivatives could be obtained (d.r. up to 94 : 6), 10 different spiroketal derivatives by hetero...

2015
Roman A Irgashev Arseny A Karmatsky Gennady L Rusinov Valery N Charushin

A short and robust approach for the synthesis of 2-(hetero)aryl substituted thieno[2,3-b]indoles from easily available 1-alkylisatins and acetylated (hetero)arenes has been advanced. The two-step procedure includes the "aldol-crotonic" type of condensation of the starting materials, followed by treatment of the intermediate 3-(2-oxo-2-(hetero)arylethylidene)indolin-2-ones with Lawesson's reagen...

Journal: :Optics express 2012
Jiajing Tu Kunimasa Saitoh Masanori Koshiba Katsuhiro Takenaga Shoichiro Matsuo

Based on the overlap integral of electromagnetic fields in neighboring cores, a calculating method is proposed for obtaining the coupling coefficient between two adjacent trench-assisted non-identical cores. And a kind of heterogeneous trench-assisted multi-core fiber (Hetero-TA-MCF) with 12 cores is proposed to achieve large effective area (A(eff)) and high density of cores. As bending radius ...

Journal: :Energy & environmental materials 2023

The chemoselective hydrodeoxygenation of natural lignocellulosic materials plays a crucial role in converting biomass into value-added chemicals. Yet their complex molecular structures often require multiple active sites synergy for effective activation and achieving high chemoselectivity. Herein, it is reported that high-entropy alloy (HEA) on oxide (HEO) hetero-structured catalyst highly acti...

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