CAREER: Semiconductor Tectons: Materials at the Interface

这个职业项目的目标有两个：1)开发合成方法，使II-VI纳米级半导体能够系统地组装成周期性电子网络；2)研究阵列组件之间的电子耦合。组装将通过使晶体工程技术适应半导体团簇(3 Nm)来进行，方法是使用自组装有机连接物对团簇边缘进行特定位置的修饰。最终的结构是由连接在四面体结构顶端的金刚烷类半导体团簇组成的三维金刚烷结构。选择间隔物和选择半导体团簇的大小可以系统地调节电子耦合的水平。将进行研究，以了解系统地修饰纳米团簇并将其联网为三维结构的基本方法。解决这些问题的途径是探索合成制备、配体取代和封端对由可变核心结构组成的Cd和Zn硫系簇合物的影响。金属硫酸盐是金刚烷的结构类似物，可用于生产钻石晶格。应用质谱学技术将用于确定母体团簇的纯度，以及直接解决团簇材料的稳定性问题。我们将通过比较取代团簇的拉曼和核磁共振数据来探讨这些材料中的交换动力学信息。利用聚合物连接器开发自组装纳米材料的构造方法将被用于组装顺应性电子材料。由聚合物间隔物组装而成的材料具有固有的柔韧性。可以利用这种灵活性来控制晶格中的耦合，潜在地允许通过晶格调制而不是传统的电子偏置来传播信息的新路径。这类材料的开发需要同时关注纳米材料的分子尺度组装和电子传输现象的表征。%该项目解决了材料科学中具有高潜在技术相关性的热门领域的基础研究问题。这项研究将在基础水平上为电子材料的重要方面贡献基础材料科学、化学和工程知识。该项目的范围将使学生在材料合成、加工和表征方面面临挑战。该项目的一个重要特点是对教育的高度重视，以及对研究和教育的整合。*9875940Strose这个职业项目的目标有两个：1)开发合成方法，使II-VI纳米级半导体能够系统地组装成周期性电子网络；2)研究阵列组件之间的电子耦合。组装将通过使晶体工程技术适应半导体团簇(3 Nm)来进行，方法是使用自组装有机连接物对团簇边缘进行特定位置的修饰。最终的结构是由连接在四面体结构顶端的金刚烷类半导体团簇组成的三维金刚烷结构。选择间隔物和选择半导体团簇的大小可以系统地调节电子耦合的水平。将进行研究，以了解系统地修饰纳米团簇并将其联网为三维结构的基本方法。解决这些问题的途径是探索合成制备、配体取代和封端对由可变核心结构组成的Cd和Zn硫系簇合物的影响。金属硫酸盐是金刚烷的结构类似物，可用于生产钻石晶格。应用质谱学技术将用于确定母体团簇的纯度，以及直接解决团簇材料的稳定性问题。我们将通过比较取代团簇的拉曼和核磁共振数据来探讨这些材料中的交换动力学信息。利用聚合物连接器开发自组装纳米材料的构造方法将被用于组装顺应性电子材料。由聚合物间隔物组装而成的材料具有固有的柔韧性。可以利用这种灵活性来控制晶格中的耦合，潜在地允许通过晶格调制而不是传统的电子偏置来传播信息的新路径。这类材料的开发需要同时关注纳米材料的分子尺度组装和电子传输现象的表征。%该项目解决了材料科学中具有高潜在技术相关性的热门领域的基础研究问题。这项研究将在基础水平上为电子材料的重要方面贡献基础材料科学、化学和工程知识。该项目的范围将使学生在材料合成、加工和表征方面面临挑战。该项目的一个重要特点是对教育的高度重视，以及对研究和教育的整合。

9875940StrouseThe goal of this CAREER project is two-fold: 1)to develop synthetic methodologies to allow the systematic assembly of II-VI nano-scale semiconductors into periodic electronic networks; 2)to study the electronic coupling between components of the array. Assembly will be pursued by the adaptation of crystal engineering techniques to semiconductor clusters ( 3 nm) using site-specific modification of the cluster edges with self-assembling organic linkers. The final structure is a 3 dimensional diamandoid architecture composed of adamantanoid semiconductor clusters linked at the apex of the tetrahedral structures. Choice of the spacer and choice of the semiconductor cluster size can systematically tune the level of electronic coupling. Studies will be conducted to understand fundamental ways to systematically modify and network nano-clusters into a 3-dimensional structures. The approach to address these issues is to probe the synthetic preparation, ligand substitution and capping influence on Cd and Zn chalcogenide clusters consisting of variable core structures. Metallo-thiolates are structural analogs of adamantane and can be used to produce diamond lattices. Application of mass-spectroscopic techniques will be used for determination of the parent cluster purity, as well as directly addressing stability of cluster materials. Information on exchange dynamics in these materials will be probed by comparison of Raman and NMR data for the substituted clusters. Exploitation of tectonic approaches for self-assembling nano-materials using polymeric connectors will be pursued for applications in the assembly of compliant electronic materials. Materials assembled from polymeric spacers are inherently flexible. The flexibility can be utilized to control coupling in the lattice potentially allowing a new path for propagating information via lattice modulation rather than conventional electronic biasing. Development of such materials requires focus on both molecular scale assemblies of nanoscale materials and the characterization of electronic transport phenomena.%%%The project addresses fundamental research issues in a topical area of materials science having high potential technological relevance. The research will contribute basic materials science, chemistry, and engineering knowledge at a fundamental level to important aspects of electronic materials. The scope of the project will expose students to challenges in materials synthesis, processing, and characterization. An important feature of the project is the strong emphasis on education, and on the integration of research and education.***9875940StrouseThe goal of this CAREER project is two-fold: 1)to develop synthetic methodologies to allow the systematic assembly of II-VI nano-scale semiconductors into periodic electronic networks; 2)to study the electronic coupling between components of the array. Assembly will be pursued by the adaptation of crystal engineering techniques to semiconductor clusters ( 3 nm) using site-specific modification of the cluster edges with self-assembling organic linkers. The final structure is a 3 dimensional diamandoid architecture composed of adamantanoid semiconductor clusters linked at the apex of the tetrahedral structures. Choice of the spacer and choice of the semiconductor cluster size can systematically tune the level of electronic coupling. Studies will be conducted to understand fundamental ways to systematically modify and network nano-clusters into a 3-dimensional structures. The approach to address these issues is to probe the synthetic preparation, ligand substitution and capping influence on Cd and Zn chalcogenide clusters consisting of variable core structures. Metallo-thiolates are structural analogs of adamantane and can be used to produce diamond lattices. Application of mass-spectroscopic techniques will be used for determination of the parent cluster purity, as well as directly addressing stability of cluster materials. Information on exchange dynamics in these materials will be probed by comparison of Raman and NMR data for the substituted clusters. Exploitation of tectonic approaches for self-assembling nano-materials using polymeric connectors will be pursued for applications in the assembly of compliant electronic materials. Materials assembled from polymeric spacers are inherently flexible. The flexibility can be utilized to control coupling in the lattice potentially allowing a new path for propagating information via lattice modulation rather than conventional electronic biasing. Development of such materials requires focus on both molecular scale assemblies of nanoscale materials and the characterization of electronic transport phenomena.%%%The project addresses fundamental research issues in a topical area of materials science having high potential technological relevance. The research will contribute basic materials science, chemistry, and engineering knowledge at a fundamental level to important aspects of electronic materials. The scope of the project will expose students to challenges in materials synthesis, processing, and characterization. An important feature of the project is the strong emphasis on education, and on the integration of research and education.***