A new type of solid-state luminescent 2-phenylbenzo[g]furo[2,3-b]quinoxaline derivative: synthesis, photophysical characterization and transporting properties

2019 ◽  
Vol 7 (31) ◽  
pp. 9690-9697 ◽  
Author(s):  
Gang Wang ◽  
Jie Li ◽  
Yixiang Li ◽  
Dongdong Wang ◽  
Jingjing Zhang ◽  
...  
Keyword(s):  
Solid State ◽  
Organic Semiconductors ◽  
Synthesis Method ◽  
Hole Mobility ◽  
Quinoxaline Derivative ◽  
New Synthesis ◽  
New Type

We developed a new synthesis method of furo [2,3-b] quinoxaline core and report a new type of 2-phenylbenzo[g]furo [2,3-b] quinoxaline organic semiconductors, which shows 22.1% PLQY in solid powders and hole mobility of 2.58 × 10−2 cm2 V−1 s−1.

Preparation and Research of Skeletal Pt-C Compounds

2018 ◽  
Vol 937 ◽  
pp. 83-87 ◽  
Author(s):  
Xin Ling Hu ◽  
Ying Jiang Qian ◽  
Dong Xu Li ◽  
Xiao Min Chen
Keyword(s):  
Optical Properties ◽  
Synthesis Method ◽  
Polymerization Reaction ◽  
Molar Ratio ◽  
Excellent Performance ◽  
Electrical And Optical Properties ◽  
Cermet Material ◽  
New Synthesis ◽  
New Ideas ◽  
New Type

Platinum matrix composite is a new type of functional pottery material, which has excellent mechanical, electrical and optical properties. Due to the complexity of the synthesis method and the expensive equipment, the development of cermet material is extremely slow, so that the method to solve the problem is urgently needed. In view of the excellent performance of the Pt-C compounds, by hydrothermal method and high temperature roasting method, a new synthesis method for the composite is proposed using melamine and four platinum chloride at 60 °C by the polymerization reaction with a molar ratio of 20:1. The synthetic of Pt-C compounds provides a new synthesis method and new ideas and at the same time the Pt-C compounds has excellent performance, showing the excellent applications in machining.

Synthesis, Analytical Characterization and Spectroscopic Investigation of Chloramphenicol Impurity A for the Quality Control of Chloramphenicol and its Formulation as Per International Compendium

2020 ◽  
Vol 17 (5) ◽  
pp. 382-388
Author(s):  
Aparna Wadhwa ◽  
Faraat Ali ◽  
Sana Parveen ◽  
Robin Kumar ◽  
Gyanendra N. Singh
Keyword(s):  
Quality Control ◽  
Synthesis Method ◽  
Analytical Techniques ◽  
International Markets ◽  
Therapeutic Effects ◽  
Reference Standard ◽  
Working Standard ◽  
Prior Art ◽  
New Synthesis ◽  
Synthetic Procedure

Objective: The main aim of the present work is to synthesize chloramphenicol impurity A (CLRMIMP- A) in the purest form and its subsequent characterization by using a panel of sophisticated analytical techniques (LC-MS, DSC, TGA, NMR, FTIR, HPLC, and CHNS) to provide as a reference standard mentioned in most of the international compendiums, including IP, BP, USP, and EP. The present synthetic procedure has not been disclosed anywhere in the prior art. Methods: A simple, cheaper, and new synthesis method was described for the preparation of CLRM-IMP-A. It was synthesized and characterized by FTIR, DSC, TGA, NMR (1H and 13C), LC-MS, CHNS, and HPLC. Results: CLRM-IMP-A present in drugs and dosage form can alter the therapeutic effects and adverse reaction of a drug considerably, it is mandatory to have a precise method for the estimation of impurities to safeguard the public health. Under these circumstances, the presence of CLRM-IMP-A in chloramphenicol (CLRM) requires strict quality control to satisfy the specified regulatory limit. The synthetic impurity obtained was in the pure form to provide a certified reference standard or working standard to stakeholders with defined potency. Conclusion: The present research describes a novel technique for the synthesis of pharmacopoeial impurity, which can help in checking/controlling the quality of the CLRM in the international markets.

scholarly journals Functionalization Strategies of PEDOT and PEDOT:PSS Films for Organic Bioelectronics Applications

Chemosensors ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 212
Author(s):  
Gonzalo E. Fenoy ◽  
Omar Azzaroni ◽  
Wolfgang Knoll ◽  
Waldemar A. Marmisollé
Keyword(s):  
Small Molecules ◽  
Conducting Polymer ◽  
Organic Semiconductors ◽  
Synthesis Method ◽  
Polymer Synthesis ◽  
Preparation Methods ◽  
Electrophysiological Signals ◽  
Organic Bioelectronics ◽  
Biological Interfaces ◽  
Living Organisms

Organic bioelectronics involves the connection of organic semiconductors with living organisms, organs, tissues, cells, membranes, proteins, and even small molecules. In recent years, this field has received great interest due to the development of all kinds of devices architectures, enabling the detection of several relevant biomarkers, the stimulation and sensing of cells and tissues, and the recording of electrophysiological signals, among others. In this review, we discuss recent functionalization approaches for PEDOT and PEDOT:PSS films with the aim of integrating biomolecules for the fabrication of bioelectronics platforms. As the choice of the strategy is determined by the conducting polymer synthesis method, initially PEDOT and PEDOT:PSS films preparation methods are presented. Later, a wide variety of PEDOT functionalization approaches are discussed, together with bioconjugation techniques to develop efficient organic-biological interfaces. Finally, and by making use of these approaches, the fabrication of different platforms towards organic bioelectronics devices is reviewed.

scholarly journals Green Synthesis of Copper Nanoparticles Using Cotton

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1906
Author(s):  
Marissa Pérez-Alvarez ◽  
Gregorio Cadenas-Pliego ◽  
Odilia Pérez-Camacho ◽  
Víctor E. Comparán-Padilla ◽  
Christian J. Cabello-Alvarado ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Copper Nanoparticles ◽  
Uv Spectroscopy ◽  
Synthesis Method ◽  
Crystallinity Index ◽  
Reaction Conditions ◽  
New Synthesis ◽  
Water As Solvent ◽  
Characterization Studies ◽  
Xrd Patterns

Copper nanoparticles (CuNP) were obtained by a green synthesis method using cotton textile fibers and water as solvent, avoiding the use of toxic reducing agents. The new synthesis method is environmentally friendly, inexpensive, and can be implemented on a larger scale. This method showed the cellulose capacity as a reducing and stabilizing agent for synthetizing Cellulose–Copper nanoparticles (CCuNP). Nanocomposites based on CCuNP were characterized by XRD, TGA, FTIR and DSC. Functional groups present in the CCuNP were identified by FTIR analysis, and XRD patterns disclosed that nanoparticles correspond to pure metallic Cu°, and their sizes are at a range of 13–35 nm. Results demonstrated that CuNPs produced by the new method were homogeneously distributed on the entire surface of the textile fiber, obtaining CCuNP nanocomposites with different copper wt%. Thus, CuNPs obtained by this method are very stable to oxidation and can be stored for months. Characterization studies disclose that the cellulose crystallinity index (CI) is modified in relation to the reaction conditions, and its chemical structure is destroyed when nanocomposites with high copper contents are synthesized. The formation of CuO nanoparticles was confirmed as a by-product, through UV spectroscopy, in the absorbance range of 300–350 nm.

New Type Of Solid-State Laser For Several Kilowatts

1987 ◽  
Author(s):  
Youichi Takada ◽  
Hideaki Saito ◽  
Tomoo Fujioka
Keyword(s):  
Solid State ◽  
Solid State Laser ◽  
State Laser ◽  
New Type

A New Synthesis Method for Producing Si3N4Whiskers by Heat Treating Porous Si Objects

2008 ◽  
Vol 91 (11) ◽  
pp. 3800-3802 ◽  
Author(s):  
Hu Hanjun ◽  
Zhou Wan-cheng ◽  
Luo Fa ◽  
Zhu Dong-Mei ◽  
Xu Jie
Keyword(s):  
Synthesis Method ◽  
Heat Treating ◽  
Porous Si ◽  
New Synthesis

H 2 storage using Zr‐CMK ‐3 developed by a new synthesis method

2021 ◽  
Author(s):  
Juliana M. Juárez ◽  
Lisandro F. Venosta ◽  
Oscar A. Anunziata ◽  
Marcos B. Gómez Costa
Keyword(s):  
Synthesis Method ◽  
New Synthesis
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