scholarly journals High-yield chemical synthesis by reprogramming central metabolism

2016 ◽  
Vol 34 (11) ◽  
pp. 1129-1129 ◽  
Author(s):  
Vivian Y Yu ◽  
Michelle C Y Chang
Keyword(s):  
Chemical Synthesis ◽  
High Yield ◽  
Central Metabolism

High-Yield Chemical Synthesis of Hexagonal ZnO Nanoparticles and Nanorods with Excellent Optical Properties

2012 ◽  
Vol 12 (1) ◽  
pp. 201-206 ◽  
Author(s):  
P. K. Giri ◽  
S. Bhattacharyya ◽  
B. Chetia ◽  
Satchi Kumari ◽  
Dilip K. Singh ◽  
...  
Keyword(s):  
Optical Properties ◽  
Chemical Synthesis ◽  
Zno Nanoparticles ◽  
High Yield

scholarly journals Polyhedral plasmonic nanoclusters through multi-step colloidal chemistry

2021 ◽  
Author(s):  
Nabila Tanjeem ◽  
Cyril Chomette ◽  
Nicholas B. Schade ◽  
Serge Ravaine ◽  
Etienne Duguet ◽  
...  
Keyword(s):  
Chemical Synthesis ◽  
High Yield ◽  
Colloidal Chemistry ◽  
Synthesis Approach

A high-yield chemical synthesis approach to making metal-coated nanoclusters results in precisely controlled plasmonic properties.

scholarly journals Promising bulk nanostructured Cu2Se thermoelectrics via high throughput and rapid chemical synthesis

RSC Advances ◽  
2016 ◽  
Vol 6 (112) ◽  
pp. 111457-111464 ◽  
Author(s):  
Mohsen Y. Tafti ◽  
Sedat Ballikaya ◽  
Adrine Malek Khachatourian ◽  
Mohammad Noroozi ◽  
Mohsin Saleemi ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Chemical Synthesis ◽  
High Throughput ◽  
High Yield ◽  
Thermoelectric Efficiency ◽  
Low Thermal Conductivity ◽  
Synthesis Route

Bulk nano-Cu2Se with low thermal conductivity and high thermoelectric efficiency was fabricated via a facile and high yield synthesis route.

scholarly journals Nitration of Methyl Eugenol Derived from Clove Oil

2019 ◽  
Vol 32 (1) ◽  
pp. 17-20
Author(s):  
I.M. Sudarma ◽  
A. Shofiati ◽  
M.G. Darmayanti
Keyword(s):  
Chemical Synthesis ◽  
Efficient Method ◽  
Mild Condition ◽  
Good Yield ◽  
Biological Properties ◽  
Methyl Eugenol ◽  
High Yield ◽  
Fine Chemicals ◽  
Clove Oil ◽  
Applied Method

No report is available in literature for the nitration of methyl eugenol. The main goal of this work is to find an efficient method for the synthesis of 5-nitro-methyl eugenol. 5-Nitro-methyl eugenol is of considerable importance in the production of other fine chemicals such as 5-amino-methyl eugenol for further chemical synthesis and has also possible to enhance its biological properties and other applications. The methyl eugenol can be prepared from methylation of eugenol which can be isolated from clove oil. In an attempt to synthesize nitro-methyl eugenol in high yield, three different nitration methods of methyl eugenol have been applied. Method (a) gave 5.97 %, (b) 84.37 % and (c) 11.40 %. Method (b) using a nitrating consisting mixture of HNO3 and H2SO4 under mild condition has been found to give 5-nitro-methyl eugenol in good yield.

Conductive Sol-Gel Hybrid Materials for Novel Cofactor Regeneration in Biocatalysis

2007 ◽  
Vol 124-126 ◽  
pp. 1087-1090 ◽  
Author(s):  
Kee Hoon Won ◽  
Eulaia Siu ◽  
Chan Beum Park
Keyword(s):  
Chemical Synthesis ◽  
Hybrid Materials ◽  
Sol Gel ◽  
Reaction Medium ◽  
Surface Modifications ◽  
Cofactor Regeneration ◽  
High Yield ◽  
Side Reactions ◽  
Hybrid Gels ◽  
Electrode Surfaces

The electrochemical recycling of cofactors during enzymatic biocatalysis has long been acknowledged as a potentially powerful technology in fine chemical synthesis. Major obstacle for this approach is that cofactors only in the immediate vicinity of the electrode surface are productive. This problem further causes high overpotential at electrode surfaces leading to undesired side reactions producing enzymatically-inactive dimer and isomer of cofactor. So far, several attempts had been made to address these problems by focusing on surface modifications, which explored to retain the enzyme and/or cofactor close to the working electrode including electrode deposition and membranes surrounding the electrode. In this work, we demonstrate a new concept of cofactor regeneration by using ‘electronically-conductive’ sol-gel hybrid materials. When conductive hybrid gels were added to the reaction medium, we found that cofactor could be efficiently recycled throughout the whole reactor system leading to high yield of product, which was unattainable with conventional technologies.

Progress in Microwave-Aided Chemical Synthesis

2012 ◽  
Vol 65 (12) ◽  
pp. 1647 ◽  
Author(s):  
Hani Mutlak A. Hassan ◽  
Steve Harakeh ◽  
Kaltoom A. Sakkaf ◽  
Iuliana Denetiu
Keyword(s):  
Chemical Synthesis ◽  
Natural Product ◽  
Reaction Times ◽  
High Yield ◽  
The Past

The continuing use of microwave (µwave) energy in chemical synthesis has been impressive over the past decade, with many reports incorporating µwave-based reactions. Two of the major benefits of using µwave heating are the remarkable decrease in reaction times and often high yield of products in comparison with classical heating, an ideal technology for synthetic chemists. Herein, we highlight some exciting examples of its recent utility in organic, medicinal, and natural product synthetic endeavours.

scholarly journals High-yield gram-scale organic synthesis using accelerated microdroplet/thin film reactions with solvent recycling

2020 ◽  
Vol 11 (9) ◽  
pp. 2356-2361 ◽  
Author(s):  
Honggang Nie ◽  
Zhenwei Wei ◽  
Lingqi Qiu ◽  
Xingshuo Chen ◽  
Dylan T. Holden ◽  
...  
Keyword(s):  
Thin Film ◽  
Chemical Synthesis ◽  
Organic Synthesis ◽  
Closed System ◽  
High Yield

A closed system has been designed to perform microdroplet/thin film reactions with solvent recycling capabilities for gram-scale chemical synthesis.

Quality films from carbon fiber evaporation for thorough coverage of TEM grids

1988 ◽  
Vol 46 ◽  
pp. 418-419
Author(s):  
N. Tempel ◽  
M. C. Ledbetter
Keyword(s):  
Electron Microscopy ◽  
High Resolution Electron Microscopy ◽  
Carbon Films ◽  
Low Noise ◽  
Vacuum Evaporation ◽  
High Yield ◽  
Good Adhesion ◽  
Noise Structure ◽  
Resolution Electron ◽  
Carbon Foils

Carbon films have been a support of choice for high resolution electron microscopy since the introduction of vacuum evaporation of carbon. The desirable qualities of carbon films and methods of producing them has been extensively reviewed. It is difficult to get a high yield of grids by many of these methods, especially if virtually all of the windows must be covered with a tightly bonded, quality film of predictable thickness. We report here a method for producing carbon foils designed to maximize these attributes: 1) coverage of virtually all grid windows, 2) freedom from holes, wrinkles or folds, 3) good adhesion between film and grid, 4) uniformity of film and low noise structure, 5) predictability of film thickness, and 6) reproducibility.Our method utilizes vacuum evaporation of carbon from a fiber onto celloidin film and grid bars, adhesion of the film complex to the grid by carbon-carbon contact, and removal of the celloidin by acetone dissolution. Materials must be of high purity, and cleanliness must be rigorously maintained.

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