CAREER: Semiconductor Tectons: Materials at the Interface

这个CAREER项目的目标是双重的：1)开发合成方法，使II-VI纳米级半导体系统地组装成周期性的电子网络；2)研究阵列元件之间的电子耦合。组装将通过将晶体工程技术应用于半导体团簇（3nm），使用自组装有机连接剂对团簇边缘进行特定位置的修饰来实现。最后的结构是一个三维菱形结构，由连接在四面体结构顶端的类金刚烷半导体簇组成。选择间隔和半导体簇大小的选择可以系统地调整电子耦合的水平。将进行研究，以了解系统地修改和网络纳米团簇成三维结构的基本方法。解决这些问题的方法是探讨由可变核心结构组成的Cd和Zn硫族化物簇的合成制备、配体取代和旋盖影响。金属硫酸盐是金刚烷的结构类似物，可用于制造金刚石晶格。质谱技术将用于测定母团的纯度，以及直接解决团材料的稳定性。这些材料中的交换动力学信息将通过取代簇的拉曼和核磁共振数据的比较来探讨。利用聚合物连接器开发自组装纳米材料的构造方法将用于柔性电子材料的组装。由聚合垫片组装而成的材料具有固有的柔韧性。这种灵活性可以用来控制晶格中的耦合，从而有可能通过晶格调制而不是传统的电子偏置来传播信息。这种材料的开发需要关注纳米材料的分子尺度组装和电子输运现象的表征。该项目涉及材料科学主题领域的基础研究问题，具有很高的潜在技术相关性。这项研究将为电子材料的重要方面提供基础的材料科学、化学和工程知识。该项目的范围将使学生接触到材料合成、加工和表征方面的挑战。该项目的一个重要特点是非常重视教育，以及研究与教育的结合。这个CAREER项目的目标有两个：1)开发合成方法，使II-VI纳米级半导体系统地组装成周期性电子网络；2)研究阵列元件之间的电子耦合。组装将通过将晶体工程技术应用于半导体团簇（3nm），使用自组装有机连接剂对团簇边缘进行特定位置的修饰来实现。最后的结构是一个三维菱形结构，由连接在四面体结构顶端的类金刚烷半导体簇组成。选择间隔和半导体簇大小的选择可以系统地调整电子耦合的水平。将进行研究，以了解系统地修改和网络纳米团簇成三维结构的基本方法。解决这些问题的方法是探讨由可变核心结构组成的Cd和Zn硫族化物簇的合成制备、配体取代和旋盖影响。金属硫酸盐是金刚烷的结构类似物，可用于制造金刚石晶格。质谱技术将用于测定母团的纯度，以及直接解决团材料的稳定性。这些材料中的交换动力学信息将通过取代簇的拉曼和核磁共振数据的比较来探讨。利用聚合物连接器开发自组装纳米材料的构造方法将用于柔性电子材料的组装。由聚合垫片组装而成的材料具有固有的柔韧性。这种灵活性可以用来控制晶格中的耦合，从而有可能通过晶格调制而不是传统的电子偏置来传播信息。这种材料的开发需要关注纳米材料的分子尺度组装和电子输运现象的表征。该项目涉及材料科学主题领域的基础研究问题，具有很高的潜在技术相关性。这项研究将为电子材料的重要方面提供基础的材料科学、化学和工程知识。该项目的范围将使学生接触到材料合成、加工和表征方面的挑战。该项目的一个重要特点是非常重视教育，并将研究与教育相结合

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.***