Paramagnetic Metal‐Ion Dopants as Polarization Agents for Dynamic Nuclear Polarization NMR Spectroscopy in Inorganic Solids

Chakrabarty Tanmoy; Goldin Nir; Feintuch Akiva; Houben Lothar; Leskes Michal

摘要

Abstract > Dynamic nuclear polarization (DNP), a technique in which the high electron spin polarization is transferred to surrounding nuclei via microwave irradiation, equips solid‐state NMR spectroscopy with unprecedented sensitivity. The most commonly used polarization agents for DNP are nitroxide radicals. However, their applicability to inorganic materials is mostly limited to surface detection. Paramagnetic metal ions were recently introduced as alternatives for nitroxides. Doping inorganic solids with paramagnetic ions can be used to tune material properties and introduces endogenous DNP agents that can potentially provide sensitivity in the particles’ bulk and surface. Here we demonstrate the approach by doping Li <sub>4</sub> Ti <sub>5</sub> O <sub>12</sub> (LTO), an anode material for lithium ion batteries, with paramagnetic ions. By incorporating Gd(III) and Mn(II) in LTO we gain up to 14 fold increase in signal intensity in static 7 Li DNP‐NMR experiments. These results suggest that doping with paramagnetic ions provides an efficient route for sensitivity enhancement in the bulk of micron size particles. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >动态核偏振（DNP），一种技术，其中转移高电子自旋极化的技术通过微波辐射周围核，用前所未有的灵敏度配备固态NMR光谱。 DNP最常用的偏振剂是硝基氧化物。然而，它们对无机材料的适用性主要限于表面检测。最近将顺磁金属离子作为硝基氧化物的替代品。掺杂具有顺磁离子的无机固体可用于调节材料性质，并引入内源性DNP试剂，其可能在颗粒体和表面中提供敏感性。在这里，我们通过掺杂Li <sub> 4 </ sub> Ti <sub> 5 </ sub> O <sub> 12 </ sub>（lto），锂离子电池的阳极材料，具有顺磁离子。通过将Gd（III）和Mn（II）掺入LTO中，我们在静态 7 </ sup> Li DNP-NMR实验中获得高达14倍的信号强度增加。这些结果表明，具有顺磁离子的掺杂提供了大量微米尺寸颗粒中灵敏度增强的有效途径。 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-16300/'>《Chemphyschem: A European journal of chemical physics and physical chemistry》</a> <b style="margin: 0 2px;">|</b><span>2018年第17期</span><b style="margin: 0 2px;">|</b><span>共4页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chakrabarty Tanmoy&option=202" target="_blank" rel="nofollow">Chakrabarty Tanmoy;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Goldin Nir&option=202" target="_blank" rel="nofollow">Goldin Nir;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Feintuch Akiva&option=202" target="_blank" rel="nofollow">Feintuch Akiva;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Houben Lothar&option=202" target="_blank" rel="nofollow">Houben Lothar;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Leskes Michal&option=202" target="_blank" rel="nofollow">Leskes Michal;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Department of Materials and InterfacesWeizmann Institute of ScienceRehovot 761000 Israel;</p> <p>Department of Materials and InterfacesWeizmann Institute of ScienceRehovot 761000 Israel;</p> <p>Department of Biological and Chemical PhysicsWeizmann Institute of ScienceRehovot 761000 Israel;</p> <p>Department of Chemical Research SupportWeizmann Institute of ScienceRehovot 761000 Israel;</p> <p>Department of Materials and InterfacesWeizmann Institute of ScienceRehovot 761000 Israel;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/1186.html" title="物理化学（理论化学）、化学物理学">物理化学（理论化学）、化学物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=doping&option=203" rel="nofollow">doping;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=dynamic nuclear polarization&option=203" rel="nofollow">dynamic nuclear polarization;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=lithium titanate&option=203" rel="nofollow">lithium titanate;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=NMR spectroscopy&option=203" rel="nofollow">NMR spectroscopy;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sensitivity enhancement&option=203" rel="nofollow">sensitivity enhancement;</a> </p> <div class="translation"> 机译：掺杂;动态核极化;钛酸锂;核磁共振谱;灵敏度增强; </div> </li> </ul> </div> </div> <div class="literature cardcommon" id="literaturereference" style="display:none"> <div class="similarity "> <h3 class="all_title" id="enpatent111">引文网络</h3> <div class="referencetab clearfix"> <ul id="referencedaohang"> <li dataid="referenceul">参考文献</li> <li dataid="citationul">引证文献</li> <li dataid="commonreferenceul">共引文献</li> <li dataid="commoncitationul">同被引文献</li> <li dataid="tworeferenceul">二级参考文献</li> <li dataid="twocitationul">二级引证文献</li> </ul> </div> <div class="reference_details" id="referenceList"> <ul id="referenceul"></ul> <ul id="citationul"></ul> <ul id="commonreferenceul"></ul> <ul id="commoncitationul"></ul> <ul id="tworeferenceul"></ul> <ul id="twocitationul"></ul> </div> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704022114611.html">Cover Feature: Paramagnetic Metal‐Ion Dopants as Polarization Agents for Dynamic Nuclear Polarization NMR Spectroscopy in Inorganic Solids (ChemPhysChem 17/2018)</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chakrabarty Tanmoy&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Chakrabarty Tanmoy,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Goldin Nir&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Goldin Nir,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Feintuch Akiva&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Feintuch Akiva,</a> <a href="/journal-foreign-16300/" target="_blank" rel="nofollow" class="tuijian_authcolor">Chemphyschem: A European journal of chemical physics and physical chemistry .</a> <span>2018</span><span>,第17期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：覆盖特征：顺磁金属离子掺杂剂作为无机固体动态核极化NMR光谱的偏振剂（Chemphyschem 17/2018）</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/academic-journal-foreign_chemistry_thesis/0204111595690.html">Improving Sensitivity of Solid-state NMR Spectroscopy by Rational Design of Polarizing Agents for Dynamic Nuclear Polarization</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Dominik J. 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href="/journal-cn-54364/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 应用光学 </a> </span> <span> . 2018</span><span>,第001期</span> </span> </div> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-33431_thesis/02022838076.html">结晶态和非晶态高聚物的椭圆偏振光谱和固体光学性质的研究</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=方鲲&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 方鲲</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=许家瑞&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,许家瑞</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=麦堪成&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,麦堪成</a> <span> <a href="/conference-cn-33431/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 第九届全国凝聚态光学性质学术会议 </a> <span> <span> . 1998</span> </span> </div> </li> <li> <div> <b>7. </b><a 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