Molecular Conductance and Induced Reactivity in Group 14 Constructs

在这项由化学系化学结构、动力学和机理B计划资助的项目中，哥伦比亚大学化学系的Colin Nuckolls、Latha Venkataraman和James L Leighton教授正在创造和研究基于第14族的sigma共轭分子材料的物理化学性质，如导线和环状和多环结构，以展示不寻常的电子、电子驱动的催化和量子力学性能。这个项目可以增加对纳米硅电子产品的了解，这是信息时代的核心。该项目还包含旨在增加科学家数量的更广泛的影响目标。它计划通过协调努力来实现这一点，这一努力涵盖了K-8课程拓展、课程开发以及对本科生和研究生的研究培训。在每一项努力中，研究人员都致力于增加历史上代表性不足的群体在科学领域的参与。具体地说，该项目的研究领域包括三个综合组成部分，通过结合合成和单分子测量来研究硅和锗分子组分，以(1)了解新设计系统中的基本结构/功能性质；(2)了解原子之间的成键相互作用如何影响分子性质；(3)创建由键应变和/或施加于这些分子的静电场催化的原位化学。总的目标是创造新的基于第14族的分子结构，对它们进行询问，并在单分子水平上催化跨越选择性sigma键的反应。这一奖项反映了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。

In this project, funded by the Chemical Structure, Dynamic & Mechanism B Program of the Chemistry Division, Professors Colin Nuckolls, Latha Venkataraman, and James L Leighton of the Columbia University Department of Chemistry are creating and studying the physicochemical properties of Group 14 based sigma-conjugated molecular materials such as wires and cyclic and multicyclic structures to demonstrate unusual electronic, electronically driven catalytic and quantum mechanical properties. This project can increase understanding of nano-scale silicon electronics, which is at the heart of the information age. The project also contains broader impacts objectives that aim to increase the number of scientists. It plans to do so by a coordinated effort that spans K-8 outreach, curriculum development, and research training for undergraduate and graduate students. In each of these efforts, the researchers are committed to increasing the participation of historically underrepresented groups in the sciences. Specifically, the research areas for this project consist of three integrated components studying silicon and germanium-based molecular components through a combination of synthesis and single-molecule measurements to (1) understand fundamental structure/function properties in new designed systems; (2) understand how bonding interactions across atoms impact molecular properties; (3) create in situ chemistry that is catalyzed by bond strain and/or the electrostatic field applied to these molecules. The overall objective is to create novel Group 14-based molecular structures, interrogate them, and catalyze reactions across selective sigma-bonds at the single-molecule level.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.