Synthesis of New Precursors for Vapor Deposition

化学部化学合成计划支持罗伊·戈登教授领导的项目。戈登教授是哈佛大学化学系的教员。在这个项目中，他正在发现含有重要金属的新化合物，用于制造更快、更节能的计算机，并实现电能的长距离传输，这是使用更清洁和可再生能源(如太阳能、风能和水力发电)所需的。我们的目标是制造新的化合物，使它们适合于将金属沉积到加热的表面上，这样它们就可以用于构建新的设备。目前，没有一种已知的含有这些金属的化合物具有这一努力所需的性质。该项目采用了有机化学、无机化学和材料化学的技术。戈登教授培训了广泛的学生，包括那些来自目前在科学中代表性不足的团体的学生，他参与了一系列的外展活动，包括在波士顿科学博物馆设计新的展品。该项目正在合成由酰胺、胍和环戊二烯配体支持的4、5和6族的新的二价和三价金属。最初的目标是已知的Ti(III)和V(III)酰胺酸盐的近亲，随后是更雄心勃勃的目标，包括Ti(II)、Zr(III)、Hf(III)、Nb(II)、Nb(III)和Mo(III)的化合物。从该项目中获得的基本知识可能有助于解决重要的技术问题，包括为计算机沉积更小的互连，以及制造用于长距离输电的超导导线。特别重要的目标是钛(II)化合物，对于这些化合物，还没有已知具有所需性能组合的例子：挥发性、热稳定性和高反应性。所选的配体结合了空间和电子性质，有望稳定高活性的钛(II)化合物。类似的策略正在被探索用于Zr、Hf、V、Nb和Mo，对于这些化合物来说，只有少数化合物甚至接近于结合所有这些期望的性质。该项目还为博物馆新展品的可持续发展、节能和可再生能源的设计提供了技术投入。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。

The Chemical Synthesis Program of the Chemistry Division supports the project led by Professor Roy Gordon. Professor Gordon is a faculty member in the Department of Chemistry at Harvard University. In this project, he is discovering new compounds that contain important metals for the fabrication of faster and more energy-efficient computers and enable the transmission of electrical energy over longer distances, as required for using more clean and renewable energy sources such as solar, wind, and hydro power. The goal is to make the new compounds so that they are suitable for depositing the metals onto heated surfaces so that they can then be used in the construction of new devices. At the current time, none of the known compounds that contain these metals have the properties needed for this effort. The project employs techniques from organic, inorganic, and materials chemistry. Professor Gordon trains a wide range of students, including those from groups currently underrepresented in science, and he participates in a range of outreach activities that include the design of new exhibits at the Boston Museum of Science.This project is synthesizing novel divalent and trivalent metals of groups 4, 5, and 6 supported by amidinate, guanidinate, and cyclopentadienyl ligands. Initial targets are relatives of known Ti(III) and V(III) amidinates, followed by more ambitious targets, including compounds of Ti(II), Zr(III), Hf(III), Nb(II), Nb(III), and Mo(III). The fundamental knowledge gained in the project may help to solve important technological problems, including deposition of smaller interconnects for computers, and making superconducting wires for the long-distance transmission of electricity. Particularly important targets are Ti(II) compounds, for which no examples are known with the desired combination of properties: volatility, thermal stability, and high reactivity. The chosen ligands combine steric and electronic properties expected to stabilize highly reactive Ti(II) compounds. Similar strategies are being explored for Zr, Hf, V, Nb and Mo, for which only a few compounds even come close to combining all of these desired properties. The project also provides technical input toward the design of new museum exhibits on sustainability, energy conservation, and renewable energy.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.