单分子电导测量技术用于氟离子检测
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- 英文论文题名：Single-molecule conductance measurement used in the detection of fluorine ion
- 论文作者：李晓慧 ; 刘俊扬 ; 杨扬 ; 师佳 ; Liu Shixia ; Decurtins Silvio ; 洪文晶
- 英文论文作者：Xiaohui Li ; Junyang Liu ; Yang Yang ; Jia Shi ; Shixia Liu ; Silvio Decurtins ; Wenjing Hong ; College of Chemistry and Chemical Engineering ; Xiamen University ; Department of Chemistry and Biochemistry ; University of Bern
- 年：2016
- 作者机构：厦门大学化学化工学院/萨本栋微米纳米科学技术研究院;Department of Chemistry and Biochemistry,University of Bern;
- 论文关键词：有机硼化合物 ; 氟离子 ; 机械可控裂结法 ; 单分子电导
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十一分会：π-共轭材料
- 语种：中文
- 分类号：O657.11
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：51k
- 原文格式：O
- 会议级别：全国
摘要
氟离子与生命健康和环境保护息息相关,发展高灵敏度的氟离子检测方法一直是科学家们研究的热点之一。由于与氟离子之间存在较强的路易斯酸碱相互作用,有机硼化合物可以实现对氟离子的专一性识别并由此受到广泛关注。目前,常见的含硼氟离子化学探针大多是基于谱学信号对氟离子进行识别和检测~([1]),但是,这类方法容易受到有机硼分子自身光学性质的干扰,并且难以达到单分子检测水平。本工作力图将单分子电导测量技术应用于氟离子的检测。我们采用机械可控裂结法~([2]),首先对有机硼化合物的单分子电导进行了测量,随后研究该单分子电导值对于外加氟离子的响应。实验发现,在溶液中加入氟离子之后,体系的单分子电导值发生了接近一个数量级的变化,这证实了单分子电导测量技术可以被用于氟离子的检测。更重要的是,本工作所提出的这一全新的氟离子检测方法,理论上可以达到单分子检测水平。
Since the fluoride anion is closely related to health and environment protection issues,the development of highly sensitive detection method of fluoride anion has been one of the researching hotspots currently.Organoboron compounds binding to the fluoride anion through strong Lewis/Lewis base interaction have received considerable attention in recent years.Here we report a single-molecule conductance measurement used in this boron-containing fluoride anion chemical sensor system by Mechanically Controllable Break Junction(MCBJ) technique at single-molecule scale.We can see an obvious conductance change about an order of magnitude,after the solution of fluoride anion is added.More importantly,our work demonstrates a new platform for fluorine anion detection,which theoretically reaches a level of single molecule scale.
Since the fluoride anion is closely related to health and environment protection issues,the development of highly sensitive detection method of fluoride anion has been one of the researching hotspots currently.Organoboron compounds binding to the fluoride anion through strong Lewis/Lewis base interaction have received considerable attention in recent years.Here we report a single-molecule conductance measurement used in this boron-containing fluoride anion chemical sensor system by Mechanically Controllable Break Junction(MCBJ) technique at single-molecule scale.We can see an obvious conductance change about an order of magnitude,after the solution of fluoride anion is added.More importantly,our work demonstrates a new platform for fluorine anion detection,which theoretically reaches a level of single molecule scale.
引文
[1]Wade,C;Broomsgrove,A.;Aldridge,S.;Gabba(i|¨)F.Chem.Rev.2010,110:3958.
[2]Hong,W.;Manrique,D.;Moreno-Garcia,P,;Gulcur,M.;Mishchenko,A.;Lambert,C;Bryce,M.;Wandlowski,T.J.Am.Chem.Soc.2012,134:2292.
[2]Hong,W.;Manrique,D.;Moreno-Garcia,P,;Gulcur,M.;Mishchenko,A.;Lambert,C;Bryce,M.;Wandlowski,T.J.Am.Chem.Soc.2012,134:2292.