Hybrid Molecular Electronic Devices Containing Molecule-Functionalized Surfaces for Switching, Memory, and Sensor Applications and Methods for Fabricating Same
申请人:Tour James M.
公开号:US20100252824A1
公开(公告)日:2010-10-07
This invention is generally related to a method of making a molecule-surface interface comprising at least one surface comprising at least one material and at least one organic group wherein the organic group is adjoined to the surface and the method comprises contacting at least one organic group precursor with at least one surface wherein the organic group precursor is capable of reacting with the surface in a manner sufficient to adjoin the organic group and the surface. The present invention is directed to hybrid molecular electronic devices having a molecule-surface interface. Such hybrid molecular electronic devices may advantageously have either a top or bottom gate electrode for modifying a conductivity of the devices.
Direct Covalent Grafting of Conjugated Molecules onto Si, GaAs, and Pd Surfaces from Aryldiazonium Salts
作者:Michael P. Stewart、Francisco Maya、Dmitry V. Kosynkin、Shawn M. Dirk、Joshua J. Stapleton、Christine L. McGuiness、David L. Allara、James M. Tour
DOI:10.1021/ja0383120
日期:2004.1.1
describe here a one-step, room-temperature route to direct covalent bonds between pi-conjugated organic molecules on three material surfaces: Si, GaAs, and Pd. The Si can be in the form of single crystal Si including heavily doped p-type Si, intrinsic Si, heavily doped n-type Si, on Si(111) and Si(100), and on n-type polycrystalline Si. The formation of the aryl-metal or aryl-semiconductor bond attachments
使用空气稳定且易于合成的芳基重氮盐,我们在此描述了一种一步式室温路线,以引导三种材料表面上 pi 共轭有机分子之间的共价键:Si、GaAs 和 Pd。Si可以是单晶Si的形式,包括重掺杂的p型Si、本征Si、重掺杂的n型Si、在Si(111)和Si(100)上以及在n型多晶Si上。芳基金属或芳基半导体键连接的形成通过椭圆光度法、反射 FTIR、XPS、循环伏安法和表面接枝单层的 AFM 分析的确证证据得到证实。对该机制的包含数据的解释表明,重氮通过在开路电位还原而活化,芳基次级产物结合到表面。包括用于制备表面接枝单层和前体重氮盐的合成细节。这种自发的重氮活化反应为许多表面上的高度钝化、坚固的单层和多层提供了一条有吸引力的途径,允许碳和表面原子与几乎垂直于表面的分子种类之间的强键。