Hemilabile Ligands as Mechanosensitive Electrode Contacts for Molecular Electronics

摘要

Abstract >Single‐molecule junctions that are sensitive to compression or elongation are an emerging class of nanoelectromechanical systems (NEMS). Although the molecule–electrode interface can be engineered to impart such functionality, most studies to date rely on poorly defined interactions. We focused on this issue by synthesizing molecular wires designed to have chemically defined hemilabile contacts based on (methylthio)thiophene moieties. We measured their conductance as a function of junction size and observed conductance changes of up to two orders of magnitude as junctions were compressed and stretched. Localised interactions between weakly coordinating thienyl sulfurs and the electrodes are responsible for the observed effect and allow reversible monodentate?bidentate contact transitions as the junction is modulated in size. We observed an up to ≈100‐fold sensitivity boost of the (methylthio)thiophene‐terminated molecular wire compared with its non‐hemilabile (methylthio)benzene counterpart and demonstrate a previously unexplored application of hemilabile ligands to molecular electronics. </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> >对压缩或伸长率敏感的单分子结是纳米机电系统（NEMS）的新出现类。尽管可以设计分子 - 电极界面以赋予这种功能，但大多数迄今为止依赖于定义差的相互作用。我们通过合成基于（甲硫基）噻吩部分的化学定义的血管触点的分子线来集中于此问题。我们测量了它们作为结尺寸的函数测量的电导，并且观察到电导变化高达两个数量级，随着结压缩并拉伸。弱协调噻吩基硫和电极之间的局部相互作用对观察到的效果负责，并且允许可逆的单张化物？双齿接触过渡，因为结的尺寸被调节。与其非血管（甲硫硫基）苯对应物相比，我们观察到（甲硫噻嗪）噻吩封端的分子线的敏感性增强率高，并证明了先前未开发的血管配体在分子电子上施加血液配体。</ p> </摘要> </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-19011/'>《Angewandte Chemie》</a> <b style="margin: 0 2px;">|</b><span>2019年第46期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </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"> </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/1188.html" title="应用化学">应用化学;</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=density functional calculations&option=203" rel="nofollow">density functional calculations;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=hemilabile ligands&option=203" rel="nofollow">hemilabile ligands;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=molecular devices&option=203" rel="nofollow">molecular devices;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=molecular electronics&option=203" rel="nofollow">molecular electronics;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sulfur ligands&option=203" rel="nofollow">sulfur ligands;</a> </p> <div class="translation"> 机译：密度函数计算;血管配体;分子器件;分子电子;硫配体; </div> </li> </ul> </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/0704028165503.html">Inside Back Cover: Hemilabile Ligands as Mechanosensitive Electrode Contacts for Molecular Electronics (Angew. 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href="/academic-degree-domestic_mphd_thesis/020315784553.html">量子点敏化太阳能电池中CuSe/CuS复合对电极界面电子传输行为研究</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=陈逸帆&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 陈逸帆</a> <span> . 2020</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06120918447.html">膜电极装配体及其制造方法以及使用该膜电极装配体的固体高分子型燃料电池</a> <b>[P]</b> . <span> 中国专利： CN101523647B </span> <span> . 2012.04.25</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120105731508.html">膜电极装配体及其制造方法以及使用该膜电极装配体的固体高分子型燃料电池</a> <b>[P]</b> . <span> 中国专利： CN101523647A </span> <span> . 2009-09-02</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130436595137.html">Electronic, molecular component, e.g. field effect transistor for electronic storage unit, has conductive contacts, where hybridization of bonding of molecule to one contact is changed by applying voltage between electrode and one contact</a> <b>[P]</b> . <span> 外国专利：  DE202006006476U1 </span> <span> . 2006-06-29</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：电子分子成分，例如用于电子存储单元的场效应晶体管具有导电触点，其中分子与一个触点的键合杂交通过在电极和一个触点之间施加电压而改变 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130441458465.html">Semiconductor device, e.g. transistor or diode, has semiconductor zone(s) of semiconductor particles surface-modified with monomolecular ligand layer and contacts for injecting and extracting charge carriers into and from the zone</a> <b>[P]</b> . <span> 外国专利：  DE10219120A1 </span> <span> . 2003-11-20</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：半导体器件晶体管或二极管，具有经过单分子配体层表面改性的半导体颗粒的一个或多个半导体区域，以及用于将电荷载流子注入该区域或从该区域中抽出电荷的触点 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130436613906.html">Electronic element comprises two electrically conducting contacts (where a molecule is bound) and a molecular core, where the conformation of the molecule between the contacts is changed and the electrical conductivity is modulated</a> <b>[P]</b> . <span> 外国专利：  DE202005012142U1 </span> <span> . 2006-01-19</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：电子元件包括两个导电触点（结合分子的位置）和分子核，其中触点之间的分子构型发生改变，电导率得到调节 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> 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