نتایج جستجو برای: functionalized piperidines

تعداد نتایج: 21966  

Journal: :Nanoscale 2013
Peizhe Tang Pengcheng Chen Jian Wu Feiyu Kang Jia Li Angel Rubio Wenhui Duan

To resolve the controversy over the functionalization effect on conductivity, we systematically investigate the structural and electronic properties of graphene covalently functionalized with phenyl groups. Using first-principles calculations combined with the model Hamiltonian analysis, we find that the structural stability, electronic and transport properties of the functionalized graphene ar...

Journal: :Chemical communications 2015
Wei Zhang Tingying Liu Haihong Wu Peng Wu Mingyuan He

Ordered imidazolyl-functionalized mesoporous polymers (IM-MPs) are directly synthesized by an evaporation-induced self-assembly method, which are further functionalized with bromoethane and employed as highly efficient and recyclable catalysts for the cycloaddition of CO2 to epoxides.

2014
Sunghoon Park Soohyun Kim Suyoung Park Wan In Lee Chongmu Lee

This study compared the responses of Pd-functionalized and pristine titanate (TiO2) nanotube arrays to ethanol with those to acetone to determine the effects of functionalization of TiO2 nanotubes with Pd nanoparticles on the sensitivity and selectivity. The responses of pristine and Pd-functionalized TiO2 nanotube arrays to ethanol gas at 200 °C were ~2877% and ~21,253%, respectively. On the o...

2014
Yu-Ting Yu Hong-Yi Wei Henry Y. Fadamiro Li Chen

A method based on silica gel chromatography and GC-MS/GC-FID analyses was developed for the quantitation of alkaloidal compounds in imported fire ants, Solenopsis richteri, S. invicta, and their hybrid found in the southern United States. The cis and trans alkaloids from fire ant body extracts were successfully separated by silica gel chromatography, identified by GCMS, and quantitated by GC-FI...

Journal: :Acta poloniae pharmaceutica 2012
Divyesh Patel Rahul Patel Premlata Kumari Navin Patel

A series of 1,3,5-triazine derivatives that contain aniline, 4-hydroxycoumarin and 7-hydroxy-4-methylcoumarin and different piperazines and piperidines as substituents on the carbon atoms of the triazine ring has been synthesized by a simple and efficient synthetic protocol. Comparative studies were performed on above compounds, which were synthesized with conventional and microwave heating met...

Journal: :Annals of agricultural and environmental medicine : AAEM 2012
Przemysław Biliński Piotr Hołownia Lucyna Kapka-Skrzypczak Andrzej Wojtyła

As the second and concluding part, this paper continues the summary review of the scientific evidence obtained from the literature and focuses on the remaining 4/6 groupings of DDs identified in illegal products found in the huge drug seizures made recently in Poland. They consist of piperazines/piperidines, phenylethylamines, tryptamines, (briefly mentioned), and a miscellaneous 'others' categ...

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