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Zhaofu Fei

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Publications associées (133)

Cycloaddition of CO2 to epoxides catalyzed by imidazolium-based polymeric ionic liquids

Gabor Laurenczy, Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Felix Daniel Bobbink, Hongbing Song, Emilia Paunescu, Huizhen Liu, Saeideh Ghazali Esfahani

A series of cross-linked ionic polymers based on styrene-functionalized imidazolium salts with chloride, hexafluorophosphate, or tetrafluoroborate counter anions have been prepared and characterized using a range of analytical and spectroscopic techniques ...

Royal Society of Chemistry2013

Formation and Properties of Self-Assembly-Driven Fluorescent Nanoparticle Sensors

Paul Joseph Dyson, Zhaofu Fei

Fluorescent nanoparticles (FNPs) are obtained in water by self-assembly from a polymeric ionic liquid, fluorescent carboxylate moiety, and a surfactant through two main supramolecular interactions, that is, ionic bonds and hydrophobic/hydrophilic interacti ...

Wiley-Blackwell2013

The making of iLiquids - the chemist's equivalent of the iPhone

Paul Joseph Dyson, Zhaofu Fei

In this viewpoint we discuss the contributions from John S. Wilkes and Michael J. Zaworotko concerning the discovery of stable ionic liquids (ILs) and their accompanying structural studies (J. Chem. Soc., Chem. Commun., 1992, 965) and Robin D. Rogers and J ...

Royal Society of Chemistry2013

Single walled carbon nanotubes as drug delivery vehicles: Targeting doxorubicin to tumors

Paul Joseph Dyson, Zhaofu Fei, Xianfu Zhang

Single walled carbon nanotubes (SWNTs) are emerging as promising delivery vehicles for cancer diagnostics and chemotherapies due to their unique properties, including, remarkable cell membrane penetrability, high drug-carrying capacities, pH-dependent ther ...

2012

A facile approach for controlling the orientation of one-dimensional mesochannels in mesoporous titania films

Paul Joseph Dyson, Zhaofu Fei, Yi Wang

Controlling of the orientation of mesochannels in mesostructured thin films is important for the development of novel molecular devices and, in particular, generating vertically aligned mesochannels with respect to the substrate plane is extremely challeng ...

Amer Chemical Soc2012

Gold Nanoparticles Grown on Ionic Liquid-Functionalized Single-Walled Carbon Nanotubes: New Materials for Photothermal Therapy

Paul Joseph Dyson, Zhaofu Fei

Gold nanoparticles were grown on single-walled carbon nanotubes (SWNTs) coated with a thiol-functionalized ionic liquid resulting in the formation of core-shell structures referred to as SWNT-IL-Au nanohybrid materials. The nanohybrid materials were charac ...

Wiley-V C H Verlag Gmbh2012

Fabrication of reduced graphene oxide hybrid materials that exhibit strong fluorescence

Paul Joseph Dyson, Zhaofu Fei

Fluorescent graphene-based materials have been prepared by a facile ion exchange route comprising the reaction of carboxylated, reduced graphene oxide (c-RGO) with fluorescent anthracene-modified imidazolium salts in water-ethanol solution. The resulting r ...

Royal Society of Chemistry2012

Electrochemical Stability of Imidazolium Based Ionic Liquids Containing Cyano Groups in the Anion: A Cyclic Voltammetry, XPS and DFT Study

Alexander Wokaun, Paul Joseph Dyson, Zhaofu Fei

The electrochemical stability of ionic liquids based on the 1-ethyl-3-methyl imidazolium EMIM cation and three different anions, dicyanoamide (N(CN)(2)), tricyanomethanide (C(CN)(3)) and tetracyanoborate (B(CN)(4)), has been investigate ...

Electrochemical Society2012

Evaluation of ionic liquid soluble imidazolium tetrachloropalladate pre-catalysts in Suzuki coupling reactions

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Hongbing Song, Kelly Joan Kilpin, Xiang Li

Imidazolium salts with aromatic groups 1,3-bis(9-anthracenylmethyl)imidazolium chloride ([Bamim]Cl), 1,3-bis(1-naphthalenylmethyl)imidazolium chloride ([Bnmim]Cl) and 1,3-bis( benzylmethyl)imidazolium chloride ([Bbmim]Cl) were reacted with PdCl2 forming th ...

Elsevier2012

Mass Spectrometric and Theoretical Study of Polyiodides: The Connection between Solid State, Solution, and Gas Phases

Paul Joseph Dyson, Zhaofu Fei, Michael Groessl

Polyiodides have been transferred intact from acetonitrile solution to the gas phase and analyzed by mass spectrometry. A range of ions were observed, including I-11, I-13, and I-15, which have higher iodine/iodide ratios than any previously ...

2011

Application of Ionic Liquids Containing Tricyanomethanide [C(CN)(3)](-) or Tetracyanoborate [B(CN)(4)](-) Anions in Dye-Sensitized Solar Cells

Michael Graetzel, Shaik Mohammed Zakeeruddin, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Magdalena Anna Marszalek

A series of novel ionic liquids composed of imidazolium, pyridinium, pyrrolidinium, and ammonium cations with tricyanomethanide or tetracyanoborate anions were prepared. The ionic liquids were characterized by NMR and IR spectroscopy and ESI-mass spectrome ...

2011

Synthesis and characterization of ether-derivatized aminophosphines and their application in C-C coupling reactions

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei

Four new bis(phosphino)amine ligands (Ph2P)2N-C6H3-R, where R = 3,5-OMe (1), 2,5-OMe (2), 2,4-OMe (3) or 3,4-OMe (4), were prepd. via aminolysis of the corresponding dimethoxyanilines with 2 equiv. of diphenylphosphine chloride in the presence of tri-Et am ...

Elsevier2010

Nitrile-functionalized pyrrolidinium ionic liquids as solvents for cross-coupling reactions involving in situ generated nanoparticle catalyst reservoirs

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Ilaria Biondi, Cinzia Chiappe, Christian Hartinger, Yugang Cui, Manish Chaubey, Yuehui Li, Xuemei Yang

Nitrile-functionalized pyrrolidinium-based ionic liqs. were prepd. and characterized by spectroscopic methods and x-ray crystallog. The application of these new ionic liqs. as reaction media for Suzuki and Stille C-C cross-coupling reactions was studied an ...

Royal Society of Chemistry2010

Crystallisation of inorganic salts containing 18-crown-6 from ionic liquids

Gabor Laurenczy, Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Ning Yan

Reaction of the zwitterionic imidazolium salt [(CH2COOH)(CH2COO)i.m.] with K2CO3 or BaO in the presence of 18-crown-6 affords the salts [(CH2COO)2i.m.][K(18-crown-6)] and [(CH2COO)2i.m.]2[Ba(18-crown-6)]. Recrystn. of these crown complexes from the ionic l ...

Elsevier2010

Coordination chemistry on the surface of single-walled carbon nanotubes

Paul Joseph Dyson, Zhaofu Fei

A facile method to coordinate transition metal complexes (TMCs) on single-walled carbon nanotubes (SWNTs) has been developed. Reaction of Zn(OAc)2 with carboxylic acid functionalized SWNTs (SWNT-COOH) affords SWNT complexes zipped-together' by zinc carboxy ...

Elsevier2010

Photochemical Behavior of High Quantum Yield SWNTs Functionalized with Anthracene Salts

Paul Joseph Dyson, Zhaofu Fei

Two different fluorescent single walled carbon nanotubes (SWNT) were prepd. First by a reaction of oxidized SWNT-K salt with 1,3-bis(9-anthracenylmethyl)imidazolium chloride (bamim)Cl to provide a fluorescent system SWNT-(bamim), via ion exchange and forma ...

Wiley-Blackwell2010

An Internal Fluorescent Probe Based on Anthracene to Evaluate Cation-Anion Interactions in Imidazolium Salts

Rosario Scopelliti, Paul Joseph Dyson, Zhaofu Fei, Wee Han Ang, Christian Hartinger, Xuemei Yang

A series of fluorescent imidazolium-based salts contg. the cation [AnCH2MeIm]+ (in which An=anthracene and Im=the imidazolium cation) with Cl-, BF4-, PF6-, SO3CF3-, [N(CN)2]-, [N(SO2CF3)2]-, or PhBF3- anions have been prepd. and characterized. X-ray diffra ...

2010

Highly selective hydrogenation of aromatic chloronitro compounds to aromatic chloroamines with ionic-liquid-like copolymer stabilized platinum nanocatalysts in ionic liquids

Paul Joseph Dyson, Zhaofu Fei, Ning Yan, Xiao Yuan

Platinum nanoparticles (PtNPs stabilized by an ionic-liq.-like-copolymer (IP) immobilized in various ionic liqs. (ILs)) effectively catalyze the selective hydrogenation of arom. chloronitro compds. to arom. chloroamines, a reaction of considerable com. sig ...

Royal Society of Chemistry2010

Separation properties of supported ionic liquid-polydimethylsiloxane membrane in pervaporation process

Zhaofu Fei

Pervaporation separation properties of water-butan-l-of binary mixtures were measured with the use of three supported liquid membranes at 37 C, namely PDMS, 1-ethenyl-3-ethyl-imidazolium hexafluorophosphate-PDMS, and tetrapropyl-ammonium tetracyanoborate-P ...

2009

Targeted delivery and controlled release of doxorubicin to cancer cells using modified single wall carbon nanotubes

Paul Joseph Dyson, Zhaofu Fei, Xianfu Zhang

A targeted drug delivery system that is triggered by changes in pH based on single wall carbon nanotubes (SWCNTs), derivatized with carboxylate groups and coated with a polysaccharide material, can be loaded with the anticancer drug doxorubicin (DOX). The ...

2009

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