Frozen Acrylamide Gels as Dynamic Nuclear Polarization Matrices

被引：25

作者：

Viger-Gravel, Jasmine ^{[1
]}

Berruyer, Pierrick ^{[2
]}

Gajan, David ^{[2
]}

Basset, Jean-Marie ^{[3
]}

Lesage, Anne ^{[2
]}

Tordo, Paul ^{[4
]}

Ouari, Olivier ^{[4
]}

Emsley, Lyndon ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Inst Sci & Ingn Chim, CH-1015 Lausanne, Switzerland

[2] Univ Lyon, Inst Sci Analyt, Ctr RMN Tres Hauts Champs, UMR 5280,CNRS,UCBL,ENS Lyon, F-69100 Villeurbanne, France

[3] KAUST, KCC, Thuwal 239556900, Saudi Arabia

[4] Aix Marseille Univ, CNRS, ICR, UMR 7273, F-13397 Marseille, France

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2017年 / 56卷 / 30期

基金：

欧洲研究理事会;

关键词：

acrylamide gels; dynamic nuclear polarization; nanoparticles; polyacrylamide gel; quantum dots; SOLID-STATE NMR; ANGLE-SPINNING NMR; POLARIZING AGENTS; HIGH-FREQUENCY; CORRELATION SPECTROSCOPY; POLYMER GELS; PROTEINS; NANOPARTICLES; SENSITIVITY; PERFORMANCE;

D O I：

10.1002/anie.201703758

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Aqueous acrylamide gels can be used to provide dynamic nuclear polarization (DNP) NMR signal enhancements of around 200 at 9.4 T and 100 K. The enhancements are shown to increase with crosslinker concentration and low concentrations of the AMUPol biradical. This DNP matrix can be used in situations where conventional incipient wetness methods fail, such as to obtain DNP surface enhanced NMR spectra from inorganic nanoparticles. In particular, we obtain Cd-113 spectra from CdTe-COOH NPs in minutes. The spectra clearly indicate a highly disordered cadmium-rich surface.

引用

页码：8726 / 8730

页数：5

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