Patent US4690715A successfully refreshed from Google Patents.
US4690715A
Expired / Lapsed
US
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Modification of the properties of metals
Assignee: Nokia Bell Labs
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Filing: 1982-06-18
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Granted: 1987-09-01
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Expires: 2002-06-18
Abstract
Abstract The use of modifiers such as disulfides and phosphines is particularly effective in modifying the properties of metals such as noble metals and silver. For example, disulfides are useful for modifying the properties of gold and silver while phosphines are useful for metals such as platinum and palladium. Through treatment with a suitable modifier it is possible to change properties such as the wetting and adhesion properties of the treated metal. Additionally, the use of modifiers to treat a desired substrate enhances formation of continuous metal films on this substrate.
Inventors
- 👤 David L. Allara
- 👤 Ralph G. Nuzzo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:35
CPC Classifications
H; H10; H10P; H10P14/00; H10P14/60; H10P14/69; H10P14/692; H10P14/6938; H10P14/6939; H10P14/69391; C; C23; C23C; C23C22/00; C23C22/02; H10P14/63; H10P14/6326; H10P14/6328; H10P14/6329; H10P14/65; H10P14/6502; H10P14/6508; H10P95/00; H05; H05K; H05K3/00; H05K3/38; H05K3/389
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
77 words
A process for fabricating a metal layer on a substrate comprising the steps of (1) treating said substrate with a modifier, said modifier comprising a compound having (a) an organic functional group which interacts with the surface of said substrate to form a chemical bond and (b) a reactive moiety, and (2) forming a layer of said metal on said treated substrate wherein said reactive moiety reacts with the species of said metal used in said formation.
Claim 2
Dependent Claim
77 words
A process for fabricating a metal layer on a substrate comprising the steps of (1) treating said substrate with a modifier, said modifier comprising a compound having (a) an organic functional group which interacts with the surface of said substrate to form a chemical bond and (b) a reactive moiety, and (2) forming a layer of said metal on said treated substrate wherein said reactive moiety reacts with the species of said metal used in said formation.
Claim 3
Dependent Claim
15 words
The process of claim 1 wherein said reactive moiety includes N, P, O or S.
Claim 4
Dependent Claim
11 words
The process of claim 1 wherein said modifier comprises a disulfide.
Claim 5
Dependent Claim
10 words
The process of claim 3 wherein said modifier comprises trans-o-dithiane-4,5-diol.
Claim 6
Dependent Claim
11 words
The process of claim 1 wherein said modifier comprises a phosphine.
Claim 7
Dependent Claim
10 words
The process of claim 5 wherein said phosphine comprises ##STR10##
Claim 8
Dependent Claim
27 words
The process of claim 1 wherein the modifier is present on the substrate in a concentration in the range 10 13 to 10 15 molecules/cm 2 .
Claim 9
Dependent Claim
15 words
The process of claim 1 wherein the surface of said substrate comprises a silicon oxide.
Claim 10
Dependent Claim
17 words
The process of claim 1 wherein the surface of said substrate comprises Al 2 O 3 .
Claim 11
Dependent Claim
12 words
The process of claim 1 wherein said metal comprises a noble metal.
Claim 12
Dependent Claim
22 words
The process of claim 1 wherein said metal comprises a member of the group consisting of gold, silver, aluminum, platinum and palladium.
Claim 13
Dependent Claim
13 words
The process of claim 1 wherein said layer formation is by electroless plating.
Claim 14
Dependent Claim
26 words
The process of claim 1 wherein said modifier comprises an amine and said layer formation is accomplished by decomposition of an aluminum trialkyl at said substrate.
Claim 15
Dependent Claim
13 words
The process of claim 1 wherein said layer formation is accomplished using evaporation.
Claim 16
Dependent Claim
57 words
A process for modifying the properties of a noble metal containing surface comprising the steps of treating said surface with an organic modifier comprising (a) a reactive portion that reacts with said metal through a moiety containing a member of the group consisting of P and S, and (b) a moiety which provides said change of properties.
Claim 17
Dependent Claim
57 words
A process for modifying the properties of a noble metal containing surface comprising the steps of treating said surface with an organic modifier comprising (a) a reactive portion that reacts with said metal through a moiety containing a member of the group consisting of P and S, and (b) a moiety which provides said change of properties.
Claim 18
Dependent Claim
11 words
The process of claim 15 wherein said modifier comprises a disulfide.
Claim 19
Dependent Claim
10 words
The process of claim 16 wherein said modifier comprises trans-o-dithiane-4,5-diol.
Claim 20
Dependent Claim
11 words
The process of claim 15 wherein said modifier comprises a phosphine.
Claim 21
Dependent Claim
22 words
The process of claim 15 wherein said noble metal comprises a member of the group consisting of gold, platinum, palladium and silver.
Claim 22
Dependent Claim
27 words
The process of claim 15 wherein the modifier is present of the substrate in a concentration in the range 10 13 to 10 15 molecules/cm 2 .
Claim 23
Dependent Claim
16 words
The process of claim 15 wherein said modifier changes the wetting properties of said noble metal.
Claim 24
Dependent Claim
10 words
The process of claim 15 wherein said metal comprises gold.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |