CAREER: Homogeneous Solution Phase Synthesis of Nanoscale Materials

这个NSF职业奖的目标是通过碱/电还原合成和表征新型纳米颗粒。用停流光谱研究颗粒的成核和生长。将研究影响平均尺寸和多分散性的参数。这些数据对于将该方法推广到“壳-核”双金属颗粒合成和大规模流动合成具有重要意义。还原将扩展到更高阶相，特别是二元非氧化物陶瓷。这项工作将成为本科材料化学研究与课程紧密结合计划的一部分。此外，PI将开始开发一种更统一的物理化学实验室方法，在这种方法中，实验与实验室和讲座的背景紧密联系，以提供学习的连续性。对化学教育感兴趣的高年级本科生将帮助设计和实施本课程。最后，PI将继续作为新生研讨会的领导者，在学生选择专业之前指导他们，帮助他们顺利过渡到大学，并在科学上展现“人性”的一面。碱化物/电化物还原是合成纳米材料的一种独特而强大的方法，在整个元素周期表中都很普遍。这种均相方法克服了常温或常温下固态合成的缓慢相互扩散，因此不局限于高温、热力学相。这里提出的研究不仅有望在短期内制造出技术上重要的材料，而且所开发的方法可能为大量尚未发现的新型亚稳态和低温热力学稳定材料打开大门

9876164WagnerThe goal of this NSF Career award is to synthesis and characterize novel nanoparticles by Alkalide/Electride reduction. The nucleation and growth of the particles will be studied by stopped-flow spectroscopy. Parameters which affect mean size and polydispersity will be investigated. This data will be essential to extend the method to "shell-core" bi-metal particle synthesis and large scale flow synthesis. The reductions will be extended to higher order phases, specifically binary non-oxide ceramics. This work will be part of a program of strong integration of research and coursework in materials chemistry for undergraduates. Additionally, the PI will begin to develop a more unified approach to Physical Chemistry laboratory, in which experiments are strongly linked within the context of the lab and with the lecture to provide continuity of learning. Senior undergraduates interested in chemical education will help design and implement the course. Finally, the PI will continue his active role as a Freshman Workshop leader, mentoring students prior to their choice of major, easing the transition to college and putting a "human" face on science.%%%Alkalide/electride reduction is an uniquely powerful method of synthesizing nanomaterials, general across the entire periodic table. This homogeneous solution phase method overcomes the slow interdiffusion typical of solid state synthesis at ambient and below, and thus is not limited to high temperature, thermodynamic phases. The research proposed here promises not only to make technologically important materials in the short term, but the methodology developed may open the door to a vast array of as yet undiscovered novel metastable and low temperature thermodynamically stable materials.***