High nuclearity polymetallic grids and clusters- towards functional molecule based devices
高核多金属网格和簇——面向基于功能分子的器件
基本信息
- 批准号:1031-2007
- 负责人:
- 金额:$ 5.61万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2007
- 资助国家:加拿大
- 起止时间:2007-01-01 至 2008-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Self-assembly methods with 'pre-programmed' ligands (molecules capable of binding metal ions to form a larger metal containing aggregate) are used to produce specific transition metal cluster and grid arrays with the metal ions bridged in close proximity by small atomic entities, which allow electronic communication between the metal centres. This leads to novel electrochemical and magnetic properties, which are being examined in the context of using these nano-meter scale, 'quantum dot' like arrays as devices for information storage and processing at the molecular level. The application of such systems to surfaces (e.g. gold, graphite) in ordered arrangements and monolayers, and the ability to probe individual molecules, and metal atoms, using scanning tunneling techniques (e.g. STM - scanning tunneling microscopy, STS - scanning tunneling spectroscopy and CITS - current induced tunneling spectroscopy), has paved the way for individual molecular switching using external electronic and magnetic probes, and the possible storage of information at both the molecular and surface array level. Current [nxn] grids include [2x2], [3x3] and [4x4] systems, thus creating nanometer (2-3 x 2-3 nm) scale molecules with very high metal and unpaired electron densities. Metals examined include Mn, Fe, Co, Ni, Cu, Zn. Attempts are underway to increase grid dimensions further with appropriate ligand design.This research area is highly topical in the world community, and we have a distinct advantage using the self-assembly approach with pre-designed ligands, in the sense that most research groups rely on serendipitous self-assembly methods, with smaller, simpler ligands, where outcomes are in large measure unpredictable. Our research has shown the beauty of predictable molecular construction, and provides the inorganic chemistry community with new methodologies for the construction of large polymetallic assemblies, and the 'high tech' electronics sector with nanometer scale subunits with the potential for molecular device behaviour
自组装方法与“预编程”配体(能够结合金属离子形成更大的含金属聚集体的分子)被用来产生特定的过渡金属团簇和栅格阵列,其中金属离子通过小的原子实体连接在一起,从而允许金属中心之间的电子通信。这导致了新的电化学性质和磁性质,这些性质是在使用这些纳米级的、类似量子点的阵列作为在分子水平上进行信息存储和处理的装置的背景下研究的。这种系统在有序排列和单层的表面(例如金、石墨)上的应用,以及使用扫描隧道技术(例如STM扫描隧道显微镜、STS扫描隧道光谱和CITS电流诱导隧道光谱)探测单个分子和金属原子的能力,为使用外部电子和磁性探针进行单个分子开关以及在分子和表面阵列水平上存储信息铺平了道路。目前的[nxn]格子包括[2x2]、[3x3]和[4x4]系统,从而产生具有非常高的金属和未配对电子密度的纳米(2-3x2-3 nm)尺度分子。被检查的金属包括锰、铁、钴、镍、铜、锌。目前正在尝试通过适当的配体设计来进一步增加网格尺寸。这一研究领域在国际上是高度热门的,我们使用预先设计的配体的自组装方法具有明显的优势,因为大多数研究小组依赖于偶然的自组装方法,具有更小、更简单的配体,其结果在很大程度上是不可预测的。我们的研究展示了可预测的分子结构之美,并为无机化学界提供了构建大型多金属组件的新方法,并为高科技电子部门提供了具有分子器件行为潜力的纳米级亚单位。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Thompson, Laurence其他文献
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{{ truncateString('Thompson, Laurence', 18)}}的其他基金
High nuclearity polymetallic grids and clusters- towards functional molecule based devices
高核多金属网格和簇——面向基于功能分子的器件
- 批准号:
1031-2007 - 财政年份:2011
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
High nuclearity polymetallic grids and clusters- towards functional molecule based devices
高核多金属网格和簇——面向基于功能分子的器件
- 批准号:
1031-2007 - 财政年份:2010
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
High nuclearity polymetallic grids and clusters- towards functional molecule based devices
高核多金属网格和簇——面向基于功能分子的器件
- 批准号:
1031-2007 - 财政年份:2009
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
High nuclearity polymetallic grids and clusters- towards functional molecule based devices
高核多金属网格和簇——面向基于功能分子的器件
- 批准号:
1031-2007 - 财政年份:2008
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
Self-assembled supramolecular grids and clusters - towards advanced materials
自组装超分子网格和簇——迈向先进材料
- 批准号:
1031-2002 - 财政年份:2006
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
National SQUID magnetometer facility
国家 SQUID 磁力计设施
- 批准号:
216948-2003 - 财政年份:2005
- 资助金额:
$ 5.61万 - 项目类别:
Major Facilities Access Grants
Self-assembled supramolecular grids and clusters - towards advanced materials
自组装超分子网格和簇——迈向先进材料
- 批准号:
1031-2002 - 财政年份:2005
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
National SQUID magnetometer facility
国家 SQUID 磁力计设施
- 批准号:
216948-2003 - 财政年份:2004
- 资助金额:
$ 5.61万 - 项目类别:
Major Facilities Access Grants
Self-assembled supramolecular grids and clusters - towards advanced materials
自组装超分子网格和簇——迈向先进材料
- 批准号:
1031-2002 - 财政年份:2004
- 资助金额:
$ 5.61万 - 项目类别:
Discovery Grants Program - Individual
Single crystal CCD x-ray diffactometer
单晶CCD X射线衍射仪
- 批准号:
315669-2005 - 财政年份:2004
- 资助金额:
$ 5.61万 - 项目类别:
Research Tools and Instruments - Category 1 (<$150,000)
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