Intermediates and methods for forming passivated surfaces on oxide layers and articles produced thereby
US7928038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2007 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Apr 22, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Intermediates and methods for forming passivated surfaces on oxide layers and articles produced thereby are described. Hydroxyl or hydroxide groups on the oxide surfaces are reacted with a metal reagent of the formula Y(L-Pol)m, where Y is a transition metal, magnesium or aluminum, L is oxygen, sulfur, selenium or an amine, and “Pol” represents a passivating agent such as a polyethylene glycol, a hydrocarbon, or a fluorocarbon. The resulting modified surface can be further reacted with a passivating agent having a phosphate functional group or a polyvalent reagent comprising a passivating moiety and a plurality of functional groups that are reactive with or that form complexes with Y. The passivating agent can also include a functional group such as biotin to provide surfaces with a desired functionality. The passivated surfaces exhibit minimal binding to bio-molecules and can be used in single-molecule detection schemes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.