نتایج جستجو برای: amino functionalized chitosanm

تعداد نتایج: 227274  

Journal: :Journal of the Royal Society, Interface 2011
Elizabeth R Balmayor Iva Pashkuleva Ana M Frias Helena S Azevedo Rui L Reis

There has been a growing interest in using biofunctionalized magnetic particles for cell isolation. This paper describes the synthesis and characterization of magnetite-polymer (Fe(3)O(4)-poly-ε-caprolactone, magnetite-PCL) microparticles surface functionalized with amino and epoxy groups allowing easy covalent attachment of specific antibodies and subsequent ability to bind target cells. Parti...

Journal: :The Journal of organic chemistry 2014
Da En Gong-Feng Zou Yuan Guo Wei-Wei Liao

Pyrrolidine rings are common moieties for pharmaceutical candidates and natural compounds, and the construction of these skeletons has received much attention. α-Amino nitriles are versatile intermediates in synthetic chemistry and have been widely used in the generation of multiple polyfunctional structures. Herein, a novel nucleophilic phosphine-catalyzed intramolecular Michael reaction of N-...

Journal: :Applied Catalysis A-general 2021

Herein we report that mixed zirconium-cerium-MOFs with amino-functionalized linkers (2-amino-1,4-benzenedicarboxylate, BDC-NH2, and 4-aminonaphthalene-2,6-dicarboxylate, NDC-NH2) act as effective non-noble-metal-based heterogeneous catalysts, for both the aerobic photooxidation of benzylic alcohols direct microwaves activation N-alkylation amines alcohols. The catalytic performance has been stu...

Journal: :Journal of environmental sciences 2018
Ziyang Zhang Haiyan Li Huijuan Liu

In order to study the influences of functionalized groups onto the adsorption of tetracycline, we prepared a series of amino and amino-Fe3+ complex mesoporous silica adsorbents with diverse content of amino and Fe3+ groups (named N,N-SBA15 and Fe-N,N-SBA15). The resulting mesoporous silica adsorbents were fully characterized by X-ray powder diffraction (XRD), Fourier transform infrared spectrom...

Journal: :Soft matter 2015
Samala Murali Mohan Reddy Ganesh Shanmugam Natarajan Duraipandy Manikantan Syamala Kiran Asit Baran Mandal

In recent years, several fluorenylmethoxycarbonyl (Fmoc)-functionalized amino acids and peptides have been used to construct hydrogels, which find a wide range of applications. Although several hydrogels have been prepared from mono Fmoc-functionalized amino acids, herein, we demonstrate the importance of an additional Fmoc-moiety in the hydrogelation of double Fmoc-functionalized L-lysine [Fmo...

Journal: :Chemical communications 2012
Gaosheng Yang Chongrong Luo Xiaolong Mu Tingting Wang Xin-Yuan Liu

A three-component cascade reaction of salicylaldehyde, malononitrile/cyanoacetate and nitromethane catalysed by chiral tertiary amino-thioureas was developed, which leads to the production of highly functionalized 2-amino-4H-chromenes in good yields with good to excellent enantioselectivities.

Mesoporous TiO2-SiO2 nanocomposite (TS) was synthesized via sol-gel method and Amino-functionalized using 3-(aminopropyl) triethoxysilane. prepared amino-functionalized TiO2-SiO2 (NH2TS) was evaluated for eliminating radioactive Th(IV) ion in comparison with (TS). The prepared nanocomposites were characterized using FT-IR,  XRD, DSC-TGA...

2014
Ying Wang Joseph T. Paletta Kathleen Berg Erin Reinhart Suchada Rajca Andrzej Rajca

A series of unnatural amino acids functionalized with sterically shielded pyrroline nitroxides were synthesized. Their reduction by ascorbate/glutathione indicates that L-cysteine functionalized with gem-diethylpyrroline nitroxide is reduced at the slowest rate and is comparable to that measured for the most resistant to reduction pyrroline and pyrrolidine nitroxides.

Journal: :Journal of Materials Chemistry C 2023

The crystal phase change in an amino-functionalized 3D Fe II spin crossover compound hosting different guests involves the emergence of large regions bi-stability whose origin has been interpreted relying on exhaustive structural study.

Journal: :European Journal of Organic Chemistry 2021

Kinetically unstable isocyanides as vinyl, allenyl and propargyl react in Passerini Ugi reactions faster than they decompose lead to functionalized α-acyloxy amides α-amino amides, respectively, which can subsequently be used involving the unsaturated substituent.

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