Dendron-functionalized superparamagnetic nanoparticles with switchable solubility in organic and aqueous media: Matrices for homogeneous catalysis and potential MRI contrast agents

被引：52

作者：

Duanmu, Chuansong ^{[1
]}

Saha, Indrajit ^{[1
]}

Zheng, Yan ^{[1
]}

Goodson, Boyd M. ^{[1
]}

Gao, Yong ^{[1
]}

机构：

[1] So Illinois Univ, Dept Chem & Biochem, Carbondale, IL 62901 USA

来源：

CHEMISTRY OF MATERIALS | 2006年 / 18卷 / 25期

关键词：

D O I：

10.1021/cm061782j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Maghemite nanoparticles protected with a shell of Simanek ( melamine) dendrons of three different generations were achieved via multiple-step syntheses. The resulting nanoclusters exhibited switchable solubility in various solvents and were examined as soluble matrices for supporting magnetically recoverable homogeneous Pd catalysts in organic solvents and as potential MRI contrast agents in aqueous media. Successful promotion of Suzuki reactions and the observation of generation-dependent dendritic effects with strong MR relaxivities suggest broad application possibilities for dendron-maghemite nanoparticles across many fields.

引用

页码：5973 / 5981

页数：9

共 54 条

[1] Sterically demanding, bioxazoline-derived N-heterocyclic carbene ligands with restricted flexibility for catalysis [J].

Altenhoff, G ;

Goddard, R ;

Lehmann, CW ;

Glorius, F .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2004, 126 (46) :15195-15201

[2] Carbamoyl-substituted N-heterocyclic carbene complexes of palladium(II):: Application to Sonogashira cross-coupling reactions [J].

Batey, RA ;

Shen, M ;

Lough, AJ .

ORGANIC LETTERS, 2002, 4 (09) :1411-1414

[3] Assessment of T1 and T*2 effects in vivo and ex vivo using iron oxide nanoparticles in steady state-dependence on blood volume and water exchange [J].

Bjornerud, A ;

Johansson, LO ;

Briley-Sæbo, K ;

Ahlström, HK .

MAGNETIC RESONANCE IN MEDICINE, 2002, 47 (03) :461-471

[4] Application of the static dephasing regime theory to superparamagnetic iron-oxide loaded cells [J].

Bowen, CV ;

Zhang, XW ;

Saab, G ;

Gareau, PJ ;

Rutt, BK .

MAGNETIC RESONANCE IN MEDICINE, 2002, 48 (01) :52-61

[5] Magnetodendrimers allow endosomal magnetic labeling and in vivo tracking of stem cells [J].

Bulte, JWM ;

Douglas, T ;

Witwer, B ;

Zhang, SC ;

Strable, E ;

Lewis, BK ;

Zywicke, H ;

Miller, B ;

van Gelderen, P ;

Moskowitz, BM ;

Duncan, ID ;

Frank, JA .

NATURE BIOTECHNOLOGY, 2001, 19 (12) :1141-1147

[6]

Bulte JWM, 1999, MAGN RESON MED, V42, P379, DOI 10.1002/(SICI)1522-2594(199908)42:2<379::AID-MRM20>3.0.CO

[7]

2-L

[8] Homogeneous catalysis - new approaches to catalyst separation, recovery, and recycling [J].

Cole-Hamilton, DJ .

SCIENCE, 2003, 299 (5613) :1702-1706

[9] Clinically applicable labeling of mammalian and stem cells by combining; Superparamagnetic iron oxides and transfection agents [J].

Frank, JA ;

Miller, BR ;

Arbab, AS ;

Zywicke, HA ;

Jordan, EK ;

Lewis, BK ;

Bryant, LH ;

Bulte, JWM .

RADIOLOGY, 2003, 228 (02) :480-487

[10] Magnetic intracellular labeling of mammalian cells by combining (FDA-approved) superparamagnetic iron oxide MR contrast agents and commonly used transfection agents [J].

Frank, JA ;

Zywicke, H ;

Jordan, EK ;

Mitchell, J ;

Lewis, BK ;

Miller, B ;

Bryant, LH ;

Bulte, JWM .

ACADEMIC RADIOLOGY, 2002, 9 :S484-S487

← 1 2 3 4 5 6 →