Nitrogen heterocycle-containing monolayers on metal oxides for binding biopolymers

US10915023B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Shu-Jen Han · Somers, US
• Brian Lin · Forest Meadow Mobile Home Park, US
• Hareem T. Maune · Pasadena, US
• Charles Thomas Rettner · San Jose, US
• Linda Karin Sundberg · Los Gatos, US
• Leslie E. Thompson · San Jose, US
• Hoa D. Truong · San Jose, US

Key dates

• Filing date: Nov 3, 2017
• Grant date: Feb 9, 2021
• Expiry date: Mar 1, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/221
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A crosslinked self-assembled monolayer (SAM), comprising surface groups containing a nitrogen-heterocycle, was formed on an oxygen plasma-treated silicon oxide or hafnium oxide top surface of a substrate. The SAM is covalently bound to the underlying oxide layer. The SAM was patterned by direct write methods using ultraviolet (UV) light of wavelength 193 nm or an electron beam, forming a line-space pattern comprising non-exposed SAM features. The non-exposed SAM features non-covalently bound DNA-wrapped carbon nanotubes (DNA-CNT) deposited from aqueous solution with a selective placement efficiency of about 90%. Good alignment of carbon nanotubes to the long axis of the SAM features was also observed. The resulting patterned biopolymer features were used to prepare a CNT based field effect transistor.